The crystal structure of 3-(1-(2-((5-methylthiophen-2-yl)methylene)hydrazinyl)ethylidene)chroman-2,4-dione, C17H14N2O3S
-
Niko S. Radulović
, Dragana M. Sejmanović
, Milenko N. Ristić, Vidoslav S. Dekić
, Biljana Krüger
, Volker Kahlenberg
and Marko V. Rodić
Abstract
C17H14N2O3S, monoclinic, P21/c (no. 14), a = 9.8966(5) Å, b = 9.4360(4) Å, c = 16.7115(7) Å, β = 92.245(4)°, V = 1559.39(12) Å3, Z = 4, R gt(F) = 0.0358, wR ref(F 2) = 0.1013, T = 170 K.
The molecular structure is shown in the figure. Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters.

Data collection and handling.
| Crystal: | Yellow irregular |
| Size: | 0.53 × 0.46 × 0.26 mm |
| Wavelength: | Mo Kα radiation (0.71073 Å) |
| μ: | 0.22 mm−1 |
| Diffractometer, scan mode: | Gemini R ultra, ω |
| θ max, completeness: | 26.4°, >99% |
| N(hkl)measured, N(hkl)unique, R int: | 32946, 3188, 0.036 |
| Criterion for I obs, N(hkl)gt: | I obs > 2 σ(I obs), 2792 |
| N(param)refined: | 215 |
| Programs: | CrysAlisPRO [1], SHELX [2, 3], PLATON [4] |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).
| Atom | x | y | z | U iso*/U eq |
|---|---|---|---|---|
| S1 | 0.87812 (4) | 0.67596 (4) | 0.36715 (2) | 0.04671 (14) |
| O1 | 0.43999 (11) | 0.06147 (11) | 0.66941 (5) | 0.0505 (3) |
| O2 | 0.60654 (13) | 0.20437 (14) | 0.69839 (6) | 0.0685 (4) |
| O3 | 0.39687 (11) | 0.20110 (12) | 0.43885 (6) | 0.0552 (3) |
| N1 | 0.59360 (12) | 0.36706 (13) | 0.46404 (7) | 0.0429 (3) |
| H1 | 0.5290 (18) | 0.3197 (18) | 0.4343 (11) | 0.065(5)* |
| N2 | 0.67878 (12) | 0.46785 (12) | 0.43386 (7) | 0.0444 (3) |
| C2 | 0.52581 (15) | 0.16768 (15) | 0.64641 (8) | 0.0452 (3) |
| C3 | 0.51281 (13) | 0.22073 (14) | 0.56514 (7) | 0.0391 (3) |
| C4 | 0.41183 (13) | 0.16285 (14) | 0.51051 (7) | 0.0401 (3) |
| C4′ | 0.32269 (13) | 0.05342 (14) | 0.54086 (8) | 0.0405 (3) |
| C5 | 0.21898 (15) | −0.00668 (17) | 0.49305 (9) | 0.0500 (3) |
| H5 | 0.204646 | 0.024035 | 0.439251 | 0.060* |
| C6 | 0.13748 (16) | −0.11000 (18) | 0.52334 (10) | 0.0573 (4) |
| H6 | 0.066792 | −0.150188 | 0.490601 | 0.069* |
| C7 | 0.15857 (17) | −0.15553 (18) | 0.60176 (11) | 0.0592 (4) |
| H7 | 0.102092 | −0.227134 | 0.622364 | 0.071* |
| C8 | 0.26002 (17) | −0.09842 (17) | 0.64997 (10) | 0.0566 (4) |
| H8 | 0.274617 | −0.130236 | 0.703544 | 0.068* |
| C8′ | 0.34080 (14) | 0.00667 (14) | 0.61892 (8) | 0.0433 (3) |
| C9 | 0.60231 (14) | 0.32835 (14) | 0.54005 (8) | 0.0415 (3) |
| C10 | 0.70383 (18) | 0.40300 (19) | 0.59326 (10) | 0.0635 (4) |
| H10A | 0.777992 | 0.337998 | 0.607877 | 0.095* |
| H10B | 0.660589 | 0.434974 | 0.641838 | 0.095* |
| H10C | 0.739597 | 0.485039 | 0.565023 | 0.095* |
| C11 | 0.65823 (14) | 0.49418 (15) | 0.35937 (8) | 0.0431 (3) |
| H11 | 0.588580 | 0.445543 | 0.329849 | 0.052* |
| C12 | 0.73950 (13) | 0.59656 (14) | 0.32004 (8) | 0.0412 (3) |
| C13 | 0.72116 (15) | 0.64599 (16) | 0.24346 (8) | 0.0480 (3) |
| H13 | 0.650260 | 0.615188 | 0.207619 | 0.058* |
| C14 | 0.81824 (16) | 0.74708 (16) | 0.22345 (9) | 0.0512 (4) |
| H14 | 0.819254 | 0.791784 | 0.172536 | 0.061* |
| C15 | 0.91036 (15) | 0.77500 (16) | 0.28349 (9) | 0.0475 (3) |
| C16 | 1.02682 (18) | 0.8761 (2) | 0.28408 (11) | 0.0647 (4) |
| H16A | 1.020505 | 0.935234 | 0.235864 | 0.097* |
| H16B | 1.111840 | 0.822800 | 0.285089 | 0.097* |
| H16C | 1.024386 | 0.936586 | 0.331686 | 0.097* |
Source of material
The synthesis was performed according to the previously reported procedure [5]. The reaction of 3-acetyl-4-hydroxycoumarin with hydrazine hydrate gives a corresponding hydrazone. Condensation of the obtained hydrazone with 5-methylthiophene-2-carbaldehyde afforded the target compound 3-(1-(2-((5-methylthiophen-2-yl)methylene)hydrazinyl)ethylidene)chroman-2,4-dione. The obtained yellow solid was dissolved in acetone and allowed to slowly evaporate to form the crystals of the title compound.
Experimental details
Coordinates of carbon-bonded hydrogen atoms were introduced in idealized positions and refined using riding model. Their U iso values are aproximated as U iso = kU eq of the parent atom (k = 1.2 for sp 2 and 1.5 for sp 3 hybridized atoms).
Comment
Azines are compounds formed by the reaction of two different or the same carbonyl compounds (mostly aldehydes or ketones) with hydrazine [6, 7]. It is well known that they possess antibacterial [8], antifungal [9], anticonvulsant [10], anti-neuroinflammatory [11], anticancer [12], and antioxidant activities [13].
Coumarins are known to possess a wide spectrum of pharmacological activities, such as antimicrobial [14], antioxidant [15], anticancer [16], anti-inflammatory [17]. The coumarin core is a good scaffold for the synthesis of analogs with an aim to study and improve their biological properties. Prompted by all of the above mentioned we decided to contribute to the structural diversity of these compounds by preparing the unsymmetrical azine of the 3-substituted coumarin core and the heterocyclic aldehyde. In this paper, we present the crystal structure of this compound.
The asymmetric unit contains one molecule of 3-(1-(2-((5-methylthiophen-2-yl)methylene)hydrazinyl)ethylidene)chroman-2,4-dione. The whole molecule is quite planar, as the rms deviation of all non-hydrogen atoms from the mean plane amounts 0.075 Å. All bond lengths and angles are within the expected range, and are comparable to those found in the structurally related coumarin compound [18]. The molecular structures of the compound appear to be different in the crystalline state and solution, transformed one into another by virtue of prototropic tautomerism. According to NMR spectra [5], oxygen atom O3 is protonated, while a tautomer in which proton transfer from O3 to N1 occurred exists in the crystalline state. The location of the hydrogen atom H1 in the crystal structure is unequivocally confirmed by difference electron density map, and unrestrained refinement of H1.
The only classical hydrogen bond donor is involved in an intramolecular hydrogen bond N1—H1···O3 with the following parameters: d(D—H) = 0.911(18) Å, d(H···A) = 1.725(18) Å, d(D···A) = 2.5211(16) Å, α(D—H···A) = 144.2(16)°. It appears that the dominant intermolecular interaction is the stacking of molecules, the geometry of which can be described by following parameters: d(Cg1···Cg2 i ) = 3.6863(8) Å, δ(Ω1,Ω2) = 4.18(7)°, and d(Cg1···Cg3 i ) = 3.7641(8) Å, δ(Ω1,Ω3) = 3.70(6)°, where Cg1 is centroid of the five membered tiophene ring Ω1, Cg2 is centroid of the six-membered lactone ring Ω2, and Cg3 is centroid of the 10-membered coumarine ring Ω3; δ is dihedral angle between ring mean planes; symmetry operation (i): −x + 1, −y + 1, −z + 1.
Funding source: Ministry of Education, Science, and Technological Development of the Republic of Serbia, & Austria Federal Ministry of Education, Science and Research
Award Identifier / Grant number: 451-03-02141/2017-09/14, 14/2018
Funding source: The Ministry of Education, Science and Technological Development of the Republic of Serbia
Award Identifier / Grant number: 451-03-68/2022-14/200125
-
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
-
Research funding: This work was financially supported by the Ministry of Education, Science, and Technological Development of the Republic of Serbia, & Austria Federal Ministry of Education, Science and Research (project No. 451-03-02141/2017-09/14; WTZ project No. SRB 14/2018); the Ministry of Education, Science and Technological Development of the Republic of Serbia (Grant No. 451-03-68/2022-14/200125); the Faculty of Science and Mathematics, University of Priština in Kosovska Mitrovica (project No. IJ-0205).
-
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
References
1. Rigaku Oxford Diffraction. CrysAlisPro Software System; Rigaku Corporation: Wroclaw, Poland, 2020.Search in Google Scholar
2. Sheldrick, G. M. SHELXTL – integrated space-group and crystal-structure determination. Acta Crystallogr. 2015, A71, 3–8; https://doi.org/10.1107/s2053273314026370.Search in Google Scholar PubMed PubMed Central
3. Sheldrick, G. M. Crystal structure refinement with SHELXL. Acta Crystallogr. 2015, C71, 3–8; https://doi.org/10.1107/s2053229614024218.Search in Google Scholar
4. Spek, A. L. Structure validation in chemical crystallography. Acta Crystallogr. 2009, D65, 148–155; https://doi.org/10.1107/s090744490804362x.Search in Google Scholar
5. Ristić, M., Radulović, N., Dekić, B., Dekić, V., Ristić, N., Stojanović-Radić, Z. Synthesis and spectral characterization of asymmetric azines containing a coumarin moiety: the discovery of new antimicrobial and antioxidant agents. Chem. Biodivers. 2019, 16, e1800486.10.1002/cbdv.201800486Search in Google Scholar PubMed
6. Safari, J., Gandomi-Ravandi, S. Structure, synthesis and application of azines: a historical perspective. RSC Adv. 2014, 4, 46224–46249; https://doi.org/10.1039/c4ra04870a.Search in Google Scholar
7. Chourasiya, S. S., Kathuria, D., Wani, A. A., Bharatam, P. V. Azines: synthesis, structure, electronic structure and their applications. Org. Biomol. Chem. 2019, 17, 8486–8521; https://doi.org/10.1039/c9ob01272a.Search in Google Scholar PubMed
8. Veena, K., Ramaiah, M., Shashikaladevi, K., Avinash, T. S., Vaidya, V. P. Synthesis and antimicrobial activity of asymmetrical azines derived from naphtho[2,1-b]furan. J. Chem. Pharmaceut. Res. 2011, 3, 130–135.Search in Google Scholar
9. Kurteva, V. B., Simeonov, S. P., Stoilova-Disheva, M. Symmetrical acyclic aryl aldazines with antibacterial and antifungal activity. Pharmacol. Pharm. 2011, 2, 1–9; https://doi.org/10.4236/pp.2011.21001.Search in Google Scholar
10. Gul, H. I., Calis, U., Vepsalainen, J. Synthesis of some mono–Mannich bases and corresponding azine derivatives and evaluation of their anticonvulsant activity. Arzneimittelforschung 2004, 54, 359–364; https://doi.org/10.1055/s-0031-1296984.Search in Google Scholar PubMed
11. Subedi, L., Kwon, O. W., Pak, C., Lee, G., Lee, K., Kim, H., Kim, S. Y. N,N-disubstituted azines attenuate LPS-mediated neuroinflammation in microglia and neuronal apoptosis via inhibiting MAPK signaling pathways. BMC Neurosci. 2017, 18, 82; https://doi.org/10.1186/s12868-017-0399-3.Search in Google Scholar PubMed PubMed Central
12. Liang, C., Xia, J., Lei, D., Li, X., Yao, Q., Gao, J. Synthesis, in vitro and in vivo antitumor activity of symmetrical bis–Schiff base derivatives of isatin. Eur. J. Med. Chem. 2014, 74, 742–750; https://doi.org/10.1016/j.ejmech.2013.04.040.Search in Google Scholar PubMed
13. Li, D. Q., Tan, M. X., Jie, L. Synthesis, antioxidant and antibacterial activities of salicylaldehyde azine. Adv. Mater. Res. 2011, 396–398, 2366–2369; https://doi.org/10.4028/www.scientific.net/amr.396-398.2366.Search in Google Scholar
14. Al-Majedy, Y. K., Kadhum, A. A. H., Al-Amiery, A. A., Mohamad, A. B. Coumarins: the antimicrobial agents. Sys. Rev. Pharm. 2017, 8, 62–70.10.5530/srp.2017.1.11Search in Google Scholar
15. Bubols, G. B., Vianna, D. R., Medina-Remon, A., von Poser, G., Lamuela-Raventos, R. M., Eifler-Lima, V. L., Garcia, S. C. The antioxidant activity of coumarins and flavonoids. Mini Rev. Med. Chem. 2013, 13, 318–334; https://doi.org/10.2174/1389557511313030002.Search in Google Scholar
16. Kapoor, S. The anti-neoplastic effects of coumarin: an emerging concept. Cytotechnology 2013, 65, 787–788; https://doi.org/10.1007/s10616-013-9538-6.Search in Google Scholar PubMed PubMed Central
17. Bansal, Y., Sethi, P., Bansal, G. Coumarin: a potential nucleus for anti-inflammatory molecules. Med. Chem. Res. 2013, 22, 3049–3060; https://doi.org/10.1007/s00044-012-0321-6.Search in Google Scholar
18. Helliwell, M., Nasiopoulou, D. A., Harris, P. A., Kotali, A., Joule, J. A. N′-[1-(2,4–Dioxo-3,4-dihydro-2H-1-benzopyran-3-ylidene)ethyl] thiophene-2-carbohydrazide. Acta Crystallogr. 2011, E67, o1014; https://doi.org/10.1107/s1600536811010907.Search in Google Scholar PubMed PubMed Central
© 2022 the author(s), published by De Gruyter, Berlin/Boston
This work is licensed under the Creative Commons Attribution 4.0 International License.
Articles in the same Issue
- Frontmatter
- New Crystal Structures
- The crystal structure of 3-(1-(2-((5-methylthiophen-2-yl)methylene)hydrazinyl)ethylidene)chroman-2,4-dione, C17H14N2O3S
- Crystal structure of chlorido-(η 6-toluene)(5,5′-dimethyl-2,2′-bipyridine-κ2 N,N′)ruthenium(II) hexafluoridophosphate(V) ─ acetone (1/1) C22H26ClN2ORuPF6
- Crystal structure of 4-(((2-(3-(1-(3-(3-cyanophenyl)-6-oxopyridazin-1(6H)-yl)ethyl)phenyl) pyrimidin-5-yl)oxy)methyl)-1-methylpiperidin-1-ium chloride monohydrate, C30H33N6O2Cl
- The crystal structure of 2-chloro-N-((2-chlorophenyl)carbamoyl)nicotinamide, C13H9Cl2N3O2
- Crystal structure of 9-(t-butyl)-3,11-dihydro-6H-pyrazolo [1,5-a]pyrrolo[3′,2′:5,6]pyrido[4,3-d]pyrimidin-6-one hemihydrate, C30H32N10O3
- Crystal structure of di-μ2-hydroxido-tetrakis(6-methylpyridine-2-carboxylato-k2 N,O) diiron(III) trihydrate C28H32Fe2N4O13
- Crystal structure of catena-poly[qua-(μ2-2-aminoisophthalat-κ3 O,O′:O′′)(1,10-phenanthroline-κ2 N,N′)manganese(II)] C20H15MnN3O5
- Crystal structure of poly[(bis(isothiocyano)-bis(μ 2-(E)-N′-(pyridin-4-ylmethylene)isonicotinohydrazide))iron(II) – methanol – 1,4-dioxane (1/2/2), C36H44FeN10O8S2
- Crystal structure of (E)-N′-(1-(5-chloro-2-hydroxyphenyl)propylidene)-4-hydroxybenzohydrazide, C16H15ClN2O3
- Crystal structure of bis(μ2-benzoato-k2O:O′)-bis(μ2-benzoato-k3O,O′:O′)dinitrato-k2O,O′-bis(phenanthroline-k2 N,N′)dierbium(III), C52H36Er2N6O14
- Crystal structure of 4-ethyl-2-{[(4-nitrophenyl)methyl]sulfanyl}-6-oxo-1,6-dihydropyrimidine-5-carbonitrile, C14H12N4O3S
- Synthesis and crystal structure of 1-((3R,10S,13R,17S)-10,13-dimethyl-3- (phenylamino)hexadecahydro-1H-cyclopenta[α] phenanthren-17-yl)ethan-1-one, C27H39NO
- Crystal structre of 1,4-bis(bromomethyl)-2,3,5,6-tetramethylbenzene, C12H16Br2
- Crystal structure of 2-(adamantan-1-yl)-5-(3,5-dinitrophenyl)-1,3,4-oxadiazole, C18H18N4O5
- Crystal structure of (E)-N′-benzylidene-4-nitrobenzohydrazide – methanol (1/1), C15H15N3O4
- The crystal structure of 3-(2-bromophenyl)-1,5-di-p-tolylpentane-1,5-dione, C25H23BrO2
- Crystal structure of catena-poly[(μ 2-4,4′-bipyridine-κ2 N:N′)-bis(4-bromobenzoato-κ1 O)zinc(II)], C24H16Br2N2O4Zn
- Crystal structure of 1,1′-(1,2-ethanediyl)bis(pyridin-1-ium) bis(1,2-dicyanoethene-1,2-dithiolato-κ2 S:S)zinc(II), C20H14N6ZnS4
- Crystal structure of pentacarbonyl-(μ2-propane-1,3-dithiolato-κ4 S:S,S′:S′)-(diphenyl(o-tolyl)phosphine-κ1 P)diiron (Fe-Fe), C27H23Fe2O5PS2
- The crystal structure of the cocrystal 4-hydroxy-3,5-dimethoxybenzoic acid–pyrazine-2-carboxamide(1/1), C14H15N3O6
- The crystal structure of dichlorido-bis((RS)-2-(4-chlorophenyl)-2-(1,2,4-triazol-1-ylmethyl)hexanenitrile-κ1 N)zinc(II), C30H34Cl4N8Zn
- Crystal structure of the cocrystal 2,4,6-triamino-1,3,5-triazine – 1H-isoindole-1,3(2H)-dione – methanol (1/1/1), C12H15N7O3
- The crystal structure of methyl 4-((3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl) benzoate, C23H28O3
- Crystal structure of (poly[µ2-(1H-pyrazol-1-yl)methyl]-1H-benzotriazole-κ 2 N:N)-(nitrato-κ 2 O:O′) silver(I), C9H8AgN7O3
- Crystal structure of tetraaqua-bis[4-(1H-1,2,4-triazol-1-yl)benzoato-k1 N]cadmium(II), C18H20CdN6O8
- The crystal structure of diaqua-bis(pyrazolo[1,5-a]pyrimidine-3-carboxylato-κ2N,O)nickel(II) dihydrate, C14H16N6O8Ni
- Crystal structure of poly[μ2-aqua-aqua-(μ2-1,3-di(1H-imidazol-1-yl)propane-κ2 N:N′)-(μ2-4,4′-(1H-1,2,4-triazole-3,5-diyl)dibenzoato-κ2 O:O′)-(μ4-4,4′-(1H-1,2,4-triazole-3,5-diyl)dibenzoato-κ5 O,O′:O″:O′″:O′″)dicobalt(II)] – water – dimethylformamide (1/1/1) C44H43N11O12Co2
- Crystal structure of N-((Z)-amino(((E)-amino(phenylamino)methylene) amino)methylene)benzenaminium chloride – benzo[f]isoquinolino[3,4-b][1,8]naphthyridine – tetrahydrofurane (1/2/2), C60H54ClN11O2
- The crystal structure of Chrysosplenol D, C18H16O8
- Crystal structure of poly[deca aqua-bis(μ 4-2-(triazol-1-yl)-benzene-1,3,5-tricarboxylato)- bis(μ 5-2-(triazol-1-yl)-benzene-1,3-dicarboxylato-5-carboxyl acid) pentamanganese(II)] dihydrate, C44H42Mn5N12O36
- Synthesis and crystal structure of (E)-1-(4-(((E)-3-(tert-butyl)-2-hydroxybenzylidene)amino)phenyl)ethan-1-one O-methyl oxime, C20H24N2O2
- The crystal structure of 4,4′-dichloro-6,6′-dimethoxy-2,2′,3,3′,5,5′- hexanitroazobenzene, C14H6N8O14Cl2
- Crystal structure of N 2,N 4-dimesitylpentane-2,4-diamine, C23H34N2
- Crystal structure of (1,4,7,10,13,16-hexaoxacyclooctadecane-κ 6O6)potassium(2-methylphenylamino)ethyl-2-methylphenylamide ammoniate (1/3.5), [K(18-crown-6)](o-CH3C6H4)NH(CH2)2N(o-CH3C6H4) 3.5 NH3, C28H53.5KN5.5O6
- The crystal structure of N′,N″,2-tris((E)-5-chloro-2-hydroxybenzylidene)hydrazine-1-carbohydrazonhydrazide hydrochloride – methanol (1/3), C25H30Cl4N6O6
- Crystal structure of (E)-7-bromo-2-(3,5-dimethoxybenzylidene)-3,4-dihydronaphthalen-1(2H)-one, C19H17BrO3
- Crystal structure of (E)-N′-(1-(5-chloro-2-hydroxyphenyl) ethylidene)-4-hydroxybenzohydrazide, C15H13ClN2O3
- {2-(((2-aminoethyl)imino)methyl)-6-bromophenolato-κ3 N,N′,O}iron(III) nitrate, C18H20Br2FeN5O5
- Crystal structure of 2-(tert-pentyl)anthracene-9,10-dione, C19H18O2
- Crystal structure of 5,5′-(1,4-phenylene)bis(1H-imidazol-3-ium) bis(2-(2-(carboxymethyl)phenyl)acetate), C32H30N4O8
- Crystal structure of N 2,N 6-bis(2-(((E)-naphthalen-1-ylmethylene)amino)phenyl)pyridine-2,6-dicarboxamide, C41H29N5O2
- The crystal structure of 3-amino-1,2,4-triazolium 2,4,5-trinitroimidazolate, C5H5O6N9
- Hydrogen bonded dimers in the crystal structure of 2-chloro-N-(phenylcarbamoyl)nicotinamide, C26H20Cl2N6O4
- The crystal structure of 4,4′-bipyridine-5,6,7-trihydroxy-2-phenyl-4H-chromen-4-one-water(1/2/2), C40H32N2O12
- Crystal structure of N,N'-bis(4-fluoro-salicylaldehyde)-3,6-dioxa-1,8-diaminooctane, C20H22F2N2O4
- Crystal structure of 3-(1,3-dinitropropan-2-yl)-4H-chromen-4-one, C12H10N2O6
- The crystal structure of (4-(2-bromoethoxy)-phenyl)(phenyl)methanone, C15H13BrO2
- Crystal structure of (E)-7-bromo-2-(4-methoxybenzylidene)-3,4-dihydronaphthalen-1(2H)-one, C18H15BrO2
- Crystal structure of dichlorido-tetrakis((E)-(RS)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)pent-1-en-3-ol-κ 1 N)cadmium(II), C60H68O4N12Cl10Cd
- Crystal structure of diaqua-diphenanthroline-κ2 N,N′-bis(μ2-2-carboxy-3,4,5,6-tetrafluorobenzoato-κ2 O:O′)-bis(μ2-tetrafluorophthalato-κ3 O,O′:O′)didysprosium(III) – phenanthroline (1/2), C80H38Dy2F16N8O18
- Crystal structure of bis(μ2-2-oxido-2-phenylacetato-κ3 O,O′:O′)-bis(N-oxido-benzamide-κ2 O,O′)-bis(propan-2-olato-κ1 O)dititanium(IV), C36H38N2O12Ti2
- Crystal structure of poly[diaqua-(μ2-1H-benzo[d][1,2,3]triazole-5-carboxylato-κ2 O:O′)(μ2-oxalato-κ4O,O:O″,O′″)europium(III)] monohydrate, C9H10N3O9Eu
- Crystal structure of bis((N-methyl-2-oxyethyl)amine)-bis(μ 2-N,N,N-tris(2-oxoethyl)amine)-bis(isopropoxy)-bis(μ 3-oxo)tetratitanium(IV)– isopropanol (1/2), C34H76N4O16Ti4
- Synthesis and crystal structure of ethyl 4-((4-iodobenzyl)amino)benzoate, C16H16INO2
- Crystal structure of (Z)-2-(tert-butyl)-5-((5-(tert- butyl)-2H-pyrrol-2-ylidene)(mesityl)methyl)-1H-pyrrole, C26H34N2
- Crystal structure of dimethylammonium poly[μ4-1,1′-(1,4- phenylenebis(methylene))bis(1H-pyrazole-3,5-dicarboxylato-κ6 N,O:O′:N′,O″:O‴) manganese(II)], C22H26MnN6O8
Articles in the same Issue
- Frontmatter
- New Crystal Structures
- The crystal structure of 3-(1-(2-((5-methylthiophen-2-yl)methylene)hydrazinyl)ethylidene)chroman-2,4-dione, C17H14N2O3S
- Crystal structure of chlorido-(η 6-toluene)(5,5′-dimethyl-2,2′-bipyridine-κ2 N,N′)ruthenium(II) hexafluoridophosphate(V) ─ acetone (1/1) C22H26ClN2ORuPF6
- Crystal structure of 4-(((2-(3-(1-(3-(3-cyanophenyl)-6-oxopyridazin-1(6H)-yl)ethyl)phenyl) pyrimidin-5-yl)oxy)methyl)-1-methylpiperidin-1-ium chloride monohydrate, C30H33N6O2Cl
- The crystal structure of 2-chloro-N-((2-chlorophenyl)carbamoyl)nicotinamide, C13H9Cl2N3O2
- Crystal structure of 9-(t-butyl)-3,11-dihydro-6H-pyrazolo [1,5-a]pyrrolo[3′,2′:5,6]pyrido[4,3-d]pyrimidin-6-one hemihydrate, C30H32N10O3
- Crystal structure of di-μ2-hydroxido-tetrakis(6-methylpyridine-2-carboxylato-k2 N,O) diiron(III) trihydrate C28H32Fe2N4O13
- Crystal structure of catena-poly[qua-(μ2-2-aminoisophthalat-κ3 O,O′:O′′)(1,10-phenanthroline-κ2 N,N′)manganese(II)] C20H15MnN3O5
- Crystal structure of poly[(bis(isothiocyano)-bis(μ 2-(E)-N′-(pyridin-4-ylmethylene)isonicotinohydrazide))iron(II) – methanol – 1,4-dioxane (1/2/2), C36H44FeN10O8S2
- Crystal structure of (E)-N′-(1-(5-chloro-2-hydroxyphenyl)propylidene)-4-hydroxybenzohydrazide, C16H15ClN2O3
- Crystal structure of bis(μ2-benzoato-k2O:O′)-bis(μ2-benzoato-k3O,O′:O′)dinitrato-k2O,O′-bis(phenanthroline-k2 N,N′)dierbium(III), C52H36Er2N6O14
- Crystal structure of 4-ethyl-2-{[(4-nitrophenyl)methyl]sulfanyl}-6-oxo-1,6-dihydropyrimidine-5-carbonitrile, C14H12N4O3S
- Synthesis and crystal structure of 1-((3R,10S,13R,17S)-10,13-dimethyl-3- (phenylamino)hexadecahydro-1H-cyclopenta[α] phenanthren-17-yl)ethan-1-one, C27H39NO
- Crystal structre of 1,4-bis(bromomethyl)-2,3,5,6-tetramethylbenzene, C12H16Br2
- Crystal structure of 2-(adamantan-1-yl)-5-(3,5-dinitrophenyl)-1,3,4-oxadiazole, C18H18N4O5
- Crystal structure of (E)-N′-benzylidene-4-nitrobenzohydrazide – methanol (1/1), C15H15N3O4
- The crystal structure of 3-(2-bromophenyl)-1,5-di-p-tolylpentane-1,5-dione, C25H23BrO2
- Crystal structure of catena-poly[(μ 2-4,4′-bipyridine-κ2 N:N′)-bis(4-bromobenzoato-κ1 O)zinc(II)], C24H16Br2N2O4Zn
- Crystal structure of 1,1′-(1,2-ethanediyl)bis(pyridin-1-ium) bis(1,2-dicyanoethene-1,2-dithiolato-κ2 S:S)zinc(II), C20H14N6ZnS4
- Crystal structure of pentacarbonyl-(μ2-propane-1,3-dithiolato-κ4 S:S,S′:S′)-(diphenyl(o-tolyl)phosphine-κ1 P)diiron (Fe-Fe), C27H23Fe2O5PS2
- The crystal structure of the cocrystal 4-hydroxy-3,5-dimethoxybenzoic acid–pyrazine-2-carboxamide(1/1), C14H15N3O6
- The crystal structure of dichlorido-bis((RS)-2-(4-chlorophenyl)-2-(1,2,4-triazol-1-ylmethyl)hexanenitrile-κ1 N)zinc(II), C30H34Cl4N8Zn
- Crystal structure of the cocrystal 2,4,6-triamino-1,3,5-triazine – 1H-isoindole-1,3(2H)-dione – methanol (1/1/1), C12H15N7O3
- The crystal structure of methyl 4-((3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl) benzoate, C23H28O3
- Crystal structure of (poly[µ2-(1H-pyrazol-1-yl)methyl]-1H-benzotriazole-κ 2 N:N)-(nitrato-κ 2 O:O′) silver(I), C9H8AgN7O3
- Crystal structure of tetraaqua-bis[4-(1H-1,2,4-triazol-1-yl)benzoato-k1 N]cadmium(II), C18H20CdN6O8
- The crystal structure of diaqua-bis(pyrazolo[1,5-a]pyrimidine-3-carboxylato-κ2N,O)nickel(II) dihydrate, C14H16N6O8Ni
- Crystal structure of poly[μ2-aqua-aqua-(μ2-1,3-di(1H-imidazol-1-yl)propane-κ2 N:N′)-(μ2-4,4′-(1H-1,2,4-triazole-3,5-diyl)dibenzoato-κ2 O:O′)-(μ4-4,4′-(1H-1,2,4-triazole-3,5-diyl)dibenzoato-κ5 O,O′:O″:O′″:O′″)dicobalt(II)] – water – dimethylformamide (1/1/1) C44H43N11O12Co2
- Crystal structure of N-((Z)-amino(((E)-amino(phenylamino)methylene) amino)methylene)benzenaminium chloride – benzo[f]isoquinolino[3,4-b][1,8]naphthyridine – tetrahydrofurane (1/2/2), C60H54ClN11O2
- The crystal structure of Chrysosplenol D, C18H16O8
- Crystal structure of poly[deca aqua-bis(μ 4-2-(triazol-1-yl)-benzene-1,3,5-tricarboxylato)- bis(μ 5-2-(triazol-1-yl)-benzene-1,3-dicarboxylato-5-carboxyl acid) pentamanganese(II)] dihydrate, C44H42Mn5N12O36
- Synthesis and crystal structure of (E)-1-(4-(((E)-3-(tert-butyl)-2-hydroxybenzylidene)amino)phenyl)ethan-1-one O-methyl oxime, C20H24N2O2
- The crystal structure of 4,4′-dichloro-6,6′-dimethoxy-2,2′,3,3′,5,5′- hexanitroazobenzene, C14H6N8O14Cl2
- Crystal structure of N 2,N 4-dimesitylpentane-2,4-diamine, C23H34N2
- Crystal structure of (1,4,7,10,13,16-hexaoxacyclooctadecane-κ 6O6)potassium(2-methylphenylamino)ethyl-2-methylphenylamide ammoniate (1/3.5), [K(18-crown-6)](o-CH3C6H4)NH(CH2)2N(o-CH3C6H4) 3.5 NH3, C28H53.5KN5.5O6
- The crystal structure of N′,N″,2-tris((E)-5-chloro-2-hydroxybenzylidene)hydrazine-1-carbohydrazonhydrazide hydrochloride – methanol (1/3), C25H30Cl4N6O6
- Crystal structure of (E)-7-bromo-2-(3,5-dimethoxybenzylidene)-3,4-dihydronaphthalen-1(2H)-one, C19H17BrO3
- Crystal structure of (E)-N′-(1-(5-chloro-2-hydroxyphenyl) ethylidene)-4-hydroxybenzohydrazide, C15H13ClN2O3
- {2-(((2-aminoethyl)imino)methyl)-6-bromophenolato-κ3 N,N′,O}iron(III) nitrate, C18H20Br2FeN5O5
- Crystal structure of 2-(tert-pentyl)anthracene-9,10-dione, C19H18O2
- Crystal structure of 5,5′-(1,4-phenylene)bis(1H-imidazol-3-ium) bis(2-(2-(carboxymethyl)phenyl)acetate), C32H30N4O8
- Crystal structure of N 2,N 6-bis(2-(((E)-naphthalen-1-ylmethylene)amino)phenyl)pyridine-2,6-dicarboxamide, C41H29N5O2
- The crystal structure of 3-amino-1,2,4-triazolium 2,4,5-trinitroimidazolate, C5H5O6N9
- Hydrogen bonded dimers in the crystal structure of 2-chloro-N-(phenylcarbamoyl)nicotinamide, C26H20Cl2N6O4
- The crystal structure of 4,4′-bipyridine-5,6,7-trihydroxy-2-phenyl-4H-chromen-4-one-water(1/2/2), C40H32N2O12
- Crystal structure of N,N'-bis(4-fluoro-salicylaldehyde)-3,6-dioxa-1,8-diaminooctane, C20H22F2N2O4
- Crystal structure of 3-(1,3-dinitropropan-2-yl)-4H-chromen-4-one, C12H10N2O6
- The crystal structure of (4-(2-bromoethoxy)-phenyl)(phenyl)methanone, C15H13BrO2
- Crystal structure of (E)-7-bromo-2-(4-methoxybenzylidene)-3,4-dihydronaphthalen-1(2H)-one, C18H15BrO2
- Crystal structure of dichlorido-tetrakis((E)-(RS)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)pent-1-en-3-ol-κ 1 N)cadmium(II), C60H68O4N12Cl10Cd
- Crystal structure of diaqua-diphenanthroline-κ2 N,N′-bis(μ2-2-carboxy-3,4,5,6-tetrafluorobenzoato-κ2 O:O′)-bis(μ2-tetrafluorophthalato-κ3 O,O′:O′)didysprosium(III) – phenanthroline (1/2), C80H38Dy2F16N8O18
- Crystal structure of bis(μ2-2-oxido-2-phenylacetato-κ3 O,O′:O′)-bis(N-oxido-benzamide-κ2 O,O′)-bis(propan-2-olato-κ1 O)dititanium(IV), C36H38N2O12Ti2
- Crystal structure of poly[diaqua-(μ2-1H-benzo[d][1,2,3]triazole-5-carboxylato-κ2 O:O′)(μ2-oxalato-κ4O,O:O″,O′″)europium(III)] monohydrate, C9H10N3O9Eu
- Crystal structure of bis((N-methyl-2-oxyethyl)amine)-bis(μ 2-N,N,N-tris(2-oxoethyl)amine)-bis(isopropoxy)-bis(μ 3-oxo)tetratitanium(IV)– isopropanol (1/2), C34H76N4O16Ti4
- Synthesis and crystal structure of ethyl 4-((4-iodobenzyl)amino)benzoate, C16H16INO2
- Crystal structure of (Z)-2-(tert-butyl)-5-((5-(tert- butyl)-2H-pyrrol-2-ylidene)(mesityl)methyl)-1H-pyrrole, C26H34N2
- Crystal structure of dimethylammonium poly[μ4-1,1′-(1,4- phenylenebis(methylene))bis(1H-pyrazole-3,5-dicarboxylato-κ6 N,O:O′:N′,O″:O‴) manganese(II)], C22H26MnN6O8