Startseite Crystal structure and photochromic properties of a novel photochromic perfluordiarylethene containing a triazole bridged pyridine group moiety, C24H18F6N4S2
Artikel Open Access

Crystal structure and photochromic properties of a novel photochromic perfluordiarylethene containing a triazole bridged pyridine group moiety, C24H18F6N4S2

  • Yongjie Li , Chunhong Zheng EMAIL logo und Shouzhi Pu
Veröffentlicht/Copyright: 21. Juni 2019

Abstract

C24H18F6N4S2, monclinic, P21/c (no. 14), a = 19.0525(18) Å, b = 8.5569(9) Å, c = 15.3792(15) Å, β = 97.241(2)°, V = 2487.3(4) Å3, Z = 4, Rgt(F) = 0.0513, wRref(F2) = 0.1425, T = 296(2) K.

CCDC no.: 1911676

The molecular crystal 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.

Source of material

The title compound was synthesized by condension reaction of a diarylethene derivative and 2-ethynylpyridine in 45% yield. Diarylethene derivative (0.1 g, 0.23 mmol) was dissolved in 20 mL solution THF : H2O (v:v = 4:1), 2-ethynylpyridine (0.024 g, 0.23 mmol) was added. Then add the catalyst, stir for 1 h in an ice bath, then stir at room temperature for 6 h. And no more educt was detected by TLC silica gel plate. After the solvent was removed by vacuum evaporation, a yellow solid was obtained with 45% yield. M.p. 451 K–453 K. The title compound crystallized from hexane-dichloromethane cosolvent at room temperature and produced the suitable colorless crystal.

Table 1:

Data collection and handling.

Crystal:Colorless, block
Size:0.28 × 0.22 × 0.16 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:0.28 mm−1
Diffractometer, scan mode:Bruker SMART, φ and ω-scans
θmax, completeness:27.7°, >97% (up to 25.3, >99%)
N(hkl)measured, N(hkl)unique, Rint:14666, 5652, 0.052
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 2432
N(param)refined:373
Programs:Bruker programs [1], SHELX [2], [3]
Table 2:

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).

AtomxyzUiso*/Ueq
F1a0.122(2)0.881(2)0.9431(18)0.138(8)
F2a0.0652(8)0.869(2)0.8118(17)0.105(5)
F3a0.2161(10)1.051(2)0.870(2)0.131(6)
F40.14665(11)1.0525(3)0.76538(17)0.1213(9)
F5a0.2974(13)0.881(3)0.790(2)0.087(6)
F6a0.2149(9)0.850(2)0.6875(12)0.095(5)
F1′a0.1410(19)0.889(2)0.9535(14)0.144(7)
F2′a0.0671(10)0.8676(18)0.843(3)0.134(8)
F3′a0.2215(6)1.040(2)0.8928(18)0.106(5)
F5′a0.3003(15)0.886(4)0.814(3)0.100(6)
F6′a0.2220(10)0.870(2)0.6941(11)0.105(5)
N10.45454(12)0.2803(3)0.72093(16)0.0626(7)
N20.43846(15)0.1486(3)0.6751(2)0.0863(9)
N30.47471(15)0.1516(3)0.60742(19)0.0827(8)
N40.58665(12)0.4671(3)0.54917(17)0.0713(7)
S10.28102(4)0.28684(9)0.71636(5)0.0659(3)
S20.10461(6)0.30905(11)0.97695(6)0.0964(4)
C1−0.0385(2)0.3078(5)0.9069(3)0.1278(17)
H1A−0.0347980.2168890.9437290.192*
H1B−0.0723530.3788640.9261000.192*
H1C−0.0536220.2772870.8473760.192*
C20.03233(18)0.3866(4)0.9121(2)0.0792(10)
C30.05223(17)0.5156(4)0.8724(2)0.0709(9)
H3SA0.0209120.5757740.8350410.085*
C40.12584(15)0.5533(3)0.89234(18)0.0541(7)
C50.16155(17)0.4518(4)0.94930(19)0.0646(8)
C60.23656(18)0.4527(5)0.9881(2)0.0997(12)
H6A0.2631160.3833010.9556360.150*
H6B0.2401150.4188341.0479650.150*
H6C0.2551710.5567130.9857940.150*
C70.15880(14)0.6873(3)0.85387(17)0.0517(7)
C80.1325(2)0.8487(4)0.8648(3)0.0759(11)
C90.18205(19)0.9565(4)0.8228(3)0.0746(10)
C100.23103(18)0.8471(3)0.7793(2)0.0637(8)
C110.21366(14)0.6858(3)0.80750(17)0.0494(7)
C120.25258(13)0.5486(3)0.78073(16)0.0451(6)
C130.22139(14)0.4319(3)0.73069(18)0.0525(7)
C140.14653(16)0.4188(4)0.6881(2)0.0821(10)
H14A0.1225170.5161710.6939490.123*
H14B0.1229090.3372430.7159030.123*
H14C0.1461510.3947340.6270580.123*
C150.32546(14)0.5210(3)0.80656(17)0.0533(7)
H15A0.3547230.5917130.8397140.064*
C160.34867(14)0.3831(3)0.77876(17)0.0530(7)
C170.42050(15)0.3130(4)0.7994(2)0.0685(9)
H17A0.4501810.3839350.8370820.082*
H17B0.4166720.2163900.8315330.082*
C180.49961(14)0.3666(4)0.6817(2)0.0648(8)
H180.5185370.4630150.6999800.078*
C190.51219(14)0.2852(3)0.60984(19)0.0564(7)
C200.55885(14)0.3229(4)0.54358(19)0.0575(8)
C210.57266(16)0.2141(4)0.4813(2)0.0692(9)
H21A0.5515160.1160150.4791840.083*
C220.61857(19)0.2548(5)0.4223(2)0.0850(10)
H22A0.6290640.1840650.3798790.102*
C230.64814(18)0.3992(5)0.4272(2)0.0914(12)
H23A0.6796580.4286160.3886440.110*
C240.63076(18)0.5008(5)0.4899(3)0.0875(11)
H240.6508010.6000710.4915880.105*
  1. aOccupancy: 0.5.

Experimental details

The hydrogen atoms were located by geometrically calculations, and their positions and thermal parameters were fixed during the structure refinement. The occupancies of the disorder fluorine atoms at the central cyclopentene ring are refined. All H atoms attached to C were fixed geometrically and treated as riding with C—CH = 0.96 Å (methyl) or 0.93 Å (ethyl and thienyl) with Uiso(H) = 1.2Ueq (ethyl and thienyl) or Uiso(H) = 1.5Ueq (methyl).

Discussion

Among the organic photochromic compounds, diarylethene derivatives have attracted remarkable research interests due to their wide applications in optical memory media and photo-optical switching devices [4], [5], [6]. In recent years, various diarylethene chemosensors have been developed to identify various chemical species, such as metal ions, anions, and amino acids [7], [8]. The sensing mechanism of these diarylethene derivatives can be determined by analytical methods such as nuclearmagnetic resonance, mass spectrometry, and infrared, but few of them are analyzed from their own structural characteristics. Therefore, in order to understand the binding mechanism, the structure of the sensor is necessary to be confirmed by single-crystal X-ray diffraction analysis. Although many photochromic diarylethene compounds have been reported so far, very few diarylethene derivatives having an ion-recognizing group have been reported, which undergo the photocyclization reaction in the crystalline phase. The single-crystalline photochromic reactivity depended on both anti-parallel mode and the distance between active carbon atoms which is less than 4.2 Å [9], [10].

To date, novel diarylethene derivatives with a triazole bridged group base moiety have attracted much attention because their photochromic reactivity could be effectively modulated by light, and metal ions [11]. It is well known that these diarylethenes having a symmetric thienyl group have excellent thermal stabilities [12]. Our group has reported a lot of diarylethene compounds with excellent optical properties and analysized their crystal structures to further guide the functional molecular design [13], [14], [15]. In addition, the introduction of fluorophores with ions recognition on the diarylethene of the symmetric thienyl group has attracted a great deal of interest among researchers. In this work, a diarylethene derived triazole bridged derivative has been synthesized through condensation reaction [16], [17]. A novel crystal 1-(2,5-dimethyl-3-thienyl)-2-{2-methyl-5-[(2-pyridyl)-triazole-methyl]-3-thienyl}-perfluorocyclopentene was obtained.

The molecule adopts an antiparallel conformation, and the distance between the photoactive carbon atoms (C5⋯C13) was 3.684 Å. Based on the empirical rule, the crystal displayed a notable color change upon irradiation with UV light. The colorless crystal turned purple upon irradiation with 313 nm light, and the colored crystals reverted to a colorless state upon irradiation with visible light. The photochromism was highly consistent in crystalline phase even after 100 repeat cycles, indicating that it is favorable for applications in a certain optoelectronic device [18]. In the perfluorocyclopentene ring, the both thiophene rings are linked by the C7=C11 double bond 1.339(7) Å, which is shorter than the formal single bond (such as C4—C7, 1.469(7) Å and C7—C8, 1.485(8) Å. The molecule includes four kinds of planar rings and they can form three dihedral angles between every two adjacent planar rings. The dihedral angles between the perfluorocyclopentene ring and the two adjacent thiophene rings were 58.5° for S2/C7—C11 and 61.2° for S1/C12,13—C15,16, and that between the triazole ring and pyridine ring was 8.6°.

The title compound is packed with antiparallel and crisscross neighbouring molecules each other. Intermolecular hydrogen bonds connect molecules of the title compound with each other. These molecular interactions together with hydrogen bonding may strengthen the stability of the framework structure.

The absorption spectrum of open-form the title compound exhibited an intense band centered at 248 nm in acetonitrile. Irradiation with UV light (297 nm) resulted in the emergence of a new absorption band at 555 nm with a color change from colorless to purple due to the formation of the closed-ring isomer. The purple color faded to colorless upon irradiation with visible light (>510 nm), and the absorption spectrum returned to the initial state. After 100 repeat cycles, the diarylethenes still showed good photochromism with only 13% degradation for its closed-ring isomer.

Acknowledgements

This work was supported by the Project of Jiangxi Education Office (GJJ180621). We thank the editor for providing the figure.

References

1. Bruker: APEX3, SAINT-Plus, XPREP. Bruker AXS Inc., Madison, WI, USA (2016).Suche in Google Scholar

2. Sheldrick, G. M.: SHELXT – Integrated space-group and crystal-structure determination. Acta Crystallogr. A71 (2015) 3–8.10.1107/S2053273314026370Suche in Google Scholar PubMed PubMed Central

3. Sheldrick, G. M.: Crystal structure refinement with SHELXL. Acta Crystallogr. C71 (2015) 3–8.10.1107/S2053229614024218Suche in Google Scholar PubMed PubMed Central

4. Xu, H. Y.; Wang, R. J.; Fan, C. B.; Liu, G.; Pu, S. Z.: Synthesis and photochromism of new asymmetrical diarylethenes with a variable heteroaryl ring and a quinoline unit. Turk. J. Chem. 40 (2016) 38–53.10.3906/kim-1502-11Suche in Google Scholar

5. Irie, M.: Phororeactive Materials for Ultrahigh-density Optical Memory, Elsevier, Amsterdam (1993).Suche in Google Scholar

6. Irie, M.; Fukaminato, T.; Matsuda, K.; Kobatake, S.: Photochromism of diarylethene molecules and crystals: Memories, switches, and actuators. Chem. Rev. 114 (2014) 12174–12277.10.1021/cr500249pSuche in Google Scholar PubMed

7. Pu, S. Z.; Sun, Q.; Fan, C. B.; Wang, R. J.; Liu, G.: Recent advances in diarylethene-based multi-responsive molecular switches. J. Mater. Chem. C 4 (2016) 3075–3093.10.1039/C6TC00110FSuche in Google Scholar

8. Li, S. Y.; Zhang, D. B.; Wang, J. Y.; Lu, R. M.; Zheng, C. H.; Pu, S. Z.: A novel diarylethene-hydrazinopyridine-based probe for fluorescent detection of aluminum ion and naked-eye detection of hydroxide ion. Sens. Actuators B Chem. 245 (2017) 263–272.10.1016/j.snb.2017.01.149Suche in Google Scholar

9. Ramamurthy, V.; Venkatesan, K.: Photochemical reactions of organic crystals. Chem. Rev. 87 (1987) 433–481.10.1021/cr00078a009Suche in Google Scholar

10. Kobatake, S.; Uchida, K.; Tsuchida, E.; Irie, M.: Single-crystalline photochromism of diarylethenes: reactivity-structure relationship. Chem. Commun. (2002) 23 2804–2805.10.1039/B208419HSuche in Google Scholar PubMed

11. Jin, J. Y.; Zhang, J. J.; Zou, L.; Tian, H.: Near-infrared photochromic behavior in a donor-acceptor type diarylethene modulated by the cyanide anion. Analyst. 138 (2013) 1641–1644.10.1039/c3an36388kSuche in Google Scholar PubMed

12. Fan, C. B.; Liu, Z. Q.; Gong, L. L.; Zheng, A. M.; Zhang, L.; Yan, C. S.; Wu, H. Q.; Feng, X. F.; Luo, F.: Photoswitching adsorption selectivity in a diarylethene-azobenzene MOF. Chem. Commun. 53 (2017) 763–766.10.1039/C6CC08982HSuche in Google Scholar PubMed

13. Fan, C. B.; Liu, Y.; Zhang, D. B.; Pu, S. Z.: Crystal structure and crystalline state multiphotochromism properties of a fused diarylethene dimer. Chinese J. Struct. Chem. 38 (2019) 251–256.Suche in Google Scholar

14. Lv, J. F.; Li, H.; Pu, S. Z.: Structure and photochromism of 1,2-bis[2-methyl-5-(3-quinolyl)-3-thienyl]-3,3,4,4,5,5-hexafluorocyclopent-1-ene, C33H20F6N2S2, Z. Kristallogr. NCS 233 (2018) 999–1002.10.1515/ncrs-2018-0116Suche in Google Scholar

15. Huang, X. Q.; Zheng, C. H.; Pu, S. Z.: Crystal structure and photochromism of 1-(2-ethyl-5-formylthiophen-3yl)-2-(2-cyano-1,5-dimethyl-4-pyrrl)-3,3,4,4,5,5-hexafluorocyclopent-1-ene, C19H14F6N2OS. Z. Kristallogr. NCS 234 (2019) 181–183.10.1515/ncrs-2018-0276Suche in Google Scholar

16. Ma, L.; Liu, G.; Pu, S. Z.; Ding, H. C.; Li, G.: A highly selective fluorescent chemosensor for copper ion based on a new diarylethene with triazole-linked fluorescein. Tetrahedron. 71 (2016) 985–991.10.1016/j.tet.2015.12.068Suche in Google Scholar

17. Duan, F.; Liu, G.; Fan, C. B.; Pu, S. Z.: Synthesis and photochromism of a novel amphiphilic diarylethene bearing two cholic acid groups. Tetrahedron Lett. 57 (2016) 1963–1966.10.1016/j.tetlet.2016.03.079Suche in Google Scholar

18. Cheng, H. B.; Zhang, H. Y.; Liu, Y.: Dual-stimulus luminescent lanthanide molecular switch based on an unsymmetrical diarylperfluorocyclopentene. J. Am. Chem. Soc. 135 (2013) 10190–10193.10.1021/ja4018804Suche in Google Scholar PubMed

Received: 2019-03-03
Accepted: 2019-04-23
Published Online: 2019-06-21
Published in Print: 2019-09-25

©2019 Yongjie Li et al., published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution 4.0 Public License.

Artikel in diesem Heft

  1. Frontmatter
  2. Crystal structure of poly[diaqua-(μ8-1,1′:2′,1′′-terphenyl-3,3′′,4′,5′-tetracarboxylato-κ8O1:O2:O3:O4:O5:O6:O7:O8)dicopper(II)], C22H14Cu2O10
  3. Crystal structure of 2-((1H-benzo[d]imidazol-2-ylimino)methyl)-4,6-di-tert-butylphenol, C22H27N3O
  4. Crystal structure of (4-ethoxynaphthalen-1-yl)(furan-2-yl)methanone, C17H14O3
  5. Crystal structure of 1-nonylpyridazin-1-ium iodide, C13H23N2I
  6. Crystal structure of bis[diaqua(1,10-phenanthroline-κ2N, N′)-copper(II)]diphenylphosphopentamolybdate dihydrate, C36H38Cu2Mo5N4O27P2
  7. The crystal structure of tetrakis(imidazole)-copper(I) hexafluorophosphate, C12H16CuF6PN8
  8. The crystal structure of dimethyl ((3,5-di-tert-butyl-4-hydroxyphenyl)(phenyl)methyl)phosphonate, C23H33O4P
  9. Crystal structure of diaqua-bis(1,10-phenanthroline κ2N,N′)nickel(II) trifluoroacetate- trifluoroacetic acid (1/1), C30H21F9N4NiO8
  10. Crystal structure of 2-(naphthalen-2-yl)-1,8-naphthyridine, C18H12N2
  11. Synthesis and crystal structure of a new polymorph of diisopropylammonium trichloroacetate, C8H16Cl3NO2
  12. Crystal structure of dimethanol-bis(1-((2-methyl-1H-benzo[d]imidazol-1-yl)methyl)-1H-benzo[d][1,2,3]triazole-κN)-bis(thiocyanato-κN)cadmium(II) C34H34CdN12O2S2
  13. Crystal structure of ethyl 2,2-difluoro-2-(7-methoxy-2-oxo-2H-chromen-3-yl)acetate, C14H12F2O5
  14. The crystal structure of bis[μ2-(N,N-diethylcarbamodithioato-κSSS′)] bis[1′-(diphenylphosphino-κP)-1-cyanoferrocene]disilver(I), C56H56Ag2Fe2N4P2S4
  15. Crystal structure of bis(di-n-butylammonium) tetrachloridodiphenylstannate(IV), C28H50Cl4N2Sn
  16. The crystal structure of poly[(μ5-2-((5-bromo-3-formyl-2-hydroxybenzylidene)amino)benzenesulfonato-κ6O:O:O,O′:O′:O′′)sodium(I)], C13H9O4NSBrNa
  17. Crystal structure of catena-{poly[bis(O,O′-diethyldithiophosphato-S)-(μ2-1,2-bis(4-pyridylmethylene)hydrazine-N,N′)-zinc(II)] di-acetonitrile solvate}, {C20H30N4O4P2S4Zn ⋅ 2 C2H3N}n
  18. Halogen and hydrogen bonding in the layered crystal structure of 2-iodoanilinium triiodide, C6H7I4N
  19. Crystal structure of cyclohexane-1,4-diammonium 2-[(2-carboxylatophenyl)disulfanyl]benzoate — dimethylformamide — monohydrate (1/1/1), [C6H16N2][C14H8O4S2] ⋅ C3H7NO⋅H2O
  20. The synthesis and crystal structure of isobutyl 5-amino-1-(2,6-dichloro-4-(trifluoromethyl)phenyl)-4-((trifluoromethyl)sulfinyl)-1H-pyrazole-3-carboxylate, C16H13Cl2F6N3O3S
  21. Isolation and crystal structure of bufotalinin — methanol (1/1), C25H34O7
  22. Crystal structure of benzylbis(1,3-diphenylpropane-1,3-dionato-κ2O,O′) chloridotin(IV), C37H29ClO4Sn
  23. Crystal structure of Bis{1-[(benzotriazol-1-yl)methyl]-1-H-1,3-(2-methyl-imidazol)}diiodidocadmium(II), [Cd(C11H11N5)2I2], C22H22N10I2Cd
  24. Crystal structure of 4-isobutoxybenzaldehyde oxime, C11H15NO2
  25. The crystal structure of bis(acetato-κ1O)-bis(N′-hydroxypyrimidine-2-carboximidamide-κ2N,N′)manganese(II) — methanol (1/2), C14H18MnN8O6, 2(CH3OH)′
  26. Crystal structure of poly[bis(μ2-bis(4-(1H-imidazol-1-yl)phenyl)amine-κ2N:N′)-bis(nitrato-κO)cadmium(II)], C36H30CdN12O6
  27. Crystal structure and optical properties of 1,6-bis(methylthio)pyrene, C18H14S2
  28. The crystal structure of hexaquamagnesium(II) bis(3,4-dinitropyrazol-1-ide), C6H14MgN8O14
  29. Halogen bonds in the crystal structure of 4,3:5,4-terpyridine – 1,4-diiodotetrafluorobenzene (1/1), C21H11F4I2N3
  30. Crystal structure and photochromic properties of a novel photochromic perfluordiarylethene containing a triazole bridged pyridine group moiety, C24H18F6N4S2
  31. Crystal structure of bis[(μ3-oxido)-(μ2-(N,N-diisopropylthiocarbamoylthio) acetato-κ2O,O′)-((N,N-diisopropylthiocarbamoylthio)acetato-κO)-bis(di-4-methylbenzyl-tin(IV))], C100H136N4O10S8Sn4
  32. Crystal structure of dibromidobis(4-bromobenzyl)tin(IV), C14H12Br4Sn
  33. The crystal structure of (4Z)-2-[(E)-(1-ethyl-3,3-dimethyl-1,3-dihydro-2H-indol-2-ylidene)methyl]-4-[(1-ethyl-3,3-dimethyl-3H-indolium-2-yl)methylidene]-3-oxocyclobut-1-en-1-olate, C30H32N2O2
  34. The crystal structure of (E)-3-(4-(dimethylamino)styryl)-5,5-dimethylcyclohex-2-en-1-one, C18H23NO
  35. Crystal structure of dihydrazinium 1H-pyrazole-3,5-dicarboxylate, C5H12N6O4
  36. Crystal structure of poly[μ2-1,4-bis((1H-imidazol-1-yl)methyl)benzene-κ2N:N′)-(μ2-4-sulfidobenzoate-κ2O:S)cobalt(II)] dihydrate, C42H44Co2N8O7S2
  37. Crystal structure of 8-(3,4-dimethylbenzylidene)-6,10-dioxaspiro[4.5]decane-7,9-dione, C17H18O4
  38. Crystal structure of 4-(2-bromo-4-(6-morpholino-3-phenyl-3H-benzo[f]chromen-3-yl) cyclohexa-2,5-dien-1-yl)morpholine, C33H31BrN2O
  39. Synthesis and crystal structure of 2-((1-phenyl-3-(thiophen-2-yl)-1H-pyrazol-4-yl)methylene)-2,3-dihydro-1H-inden-1-one, C23H16N2OS
  40. Crystal structure of poly[(μ2-1,1′-(oxybis(4,1-phenylene)bis(1H-imidazole)-κ2N,N′)(μ2-1,3-benzenecarboxylato-κ3O,O′:O′′)zinc(II)] dihydrate, C26H22N4O7Zn
  41. Crystal structure of diaqua-bis(cinnamato-κ2O,O′)zinc(II), C18H18ZnO6
  42. Crystal structure of 2-(prop-2-yn-1-yloxy)-1-naphthaldehyde, C14H10O2
  43. Crystal structure and photochromic properties of 1-(2-methyl-5-phenyl-3-thienyl)-2-{2-methyl-5-[4-(9-fluorenone hydrazone)-phenyl]-3-thienyl}perfluorocyclopentene, C41H26F6N2S2
  44. Hydrothermal synthesis and crystal structure of cylo[tetraaqua-bis(μ2-1,4-bis(1H-benzo[d]imidazol-1-yl)but-2-ene-κ2N:N′)-bis(μ2-4-nitro-phthalate-κ2O,O′)dinickel(II)], C26H23N5O8Ni
  45. Crystal structure of 3-[methyl(phenyl)amino]-1-phenylthiourea, C14H15N3S
  46. Crystal structure of 1-(4-chlorophenyl)-3-[methyl(phenyl)amino]thiourea, C14H14ClN3S
  47. Crystal structure of 2-tert-butyl-1H-imidazo[4,5-b]pyridine, C10H13N3
  48. Crystal structure of 5-carboxy-2-(2-carboxyphenyl)-1H-imidazol-3-ium-4-carboxylate dihydrate, C12H8N2O6⋅2(H2O)
  49. The crystal structure of dichlorido-μ2-dichlorido-(η2-1,4-bis(4-vinylbenzyl)-1,4-diazabicyclo[2.2.2]octane-1,4-diium)dicopper(I), C24H30N2Cu2Cl4
  50. Crystal structure of 4-bromobenzyl (Z)-N-(adamantan-1-yl)morpholine-4-carbothioimidate, C22H29BrN2OS
  51. Crystal structure of (4S,4aS,6aR,6bR,12aS,12bR,14aS,14bR)-3,3,6a,6b,9,9,12a-heptamethyloctadecahydro-1H,3H-4,14b-ethanophenanthro[1,2-h]isochromene-1(6bH)-one, C30H48O2
  52. Crystal structure of 3,5-bis(trifluoromethyl)benzyl (Z)-N′-(adamantan-1-yl)-4-phenylpiperazine-1-carbothioimidate, C30H33F6N3S
  53. The crystal structure of 3-methoxyphenanthridin-6(5H)-one, C14H11NO2
  54. Crystal structure of 4-(5,5-difluoro-1,3,7,9-tetramethyl-3H,5H-5λ4-dipyrrolo[1,2-c:2′,1′-f][1,3,2]diazaborinin-10-yl)pyridin-1-ium tetraiodidoferrate(III), C18H19BF2FeI4N3
  55. Crystal structure of 2-(3-methoxyphenyl)-3-((phenylsulfonyl)methyl)imidazo[1,2-a]pyridine, C21H18N2O3S
  56. Crystal structure of [(2-(2-chlorophenyl)-5-ethyl-1,3-dioxane-5-carboxylato-κ2O,O′) (5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N′′,N′′′)]nickel(II) perchlorate, C29H50Cl2N4NiO8
  57. Crystal structure of (Z)-6-(dimethylamino)-3,3-bis(4-(dimethylamino)phenyl)-2-(2-(quinoxalin-2-ylmethylene)hydrazinyl)-2,3-dihydroinden-1-one, C35H35N7O
  58. 5-Methyl-N′-[5-methyl-1-(4-methylphenyl)-1H-1,2,3-triazole-4-carbonyl]-1-(4-methylphenyl)-1H-1,2,3-triazole-4-carbohydrazide, C22H22N8O2
  59. Crystal structure of 2,3-dichloro-6-methoxyquinoxaline, C9H6Cl2N2O
  60. Synthesis and crystal structure of 7-chloro-2-(ethylsulfinyl)-6-fluoro-3-(1H-pyrazole-1-yl)-4H-thiochromen-4-one, C13H10FN3OS2
  61. Crystal structure of 4-ethylpiperazine-1-carbothioic dithioperoxyanhydride, C14H26N4S4
  62. Crystal structure of 2-(2-(6-methylpyridin-2-yl)naphthalen-1-yl)pyrimidine, C20H15N3
  63. The crystal structure of N′-((1E,2E)-4-(7-methoxy-2-oxo-2H-chromen-8-yl)-2-methylbut-2-en-1-ylidene)-3-methylbenzohydrazide, C23H22N2O4
  64. Crystal structure of catena-poly[(μ2-isophthalato-κ2O:O′)-(2,5-di(pyrazin-2-yl)-4,4′-bipyridine-κ3N,N′,N′′)zinc(II)] — water (2/5), C26H21N6O6.5Zn
  65. Crystal structure of (3E,5E)-3,5-bis(3-nitrobenzylidene)-1-((4-(trifluoromethyl)phenyl)sulfonyl)piperidin-4-one — dichloromethane (2/1), C53H38Cl2F6N6O14S2
  66. Crystal structure of (μ2-oxido)-bis(N,N′-o-phenylenebis(salicylideneiminato))diiron(III) — N,N′-dimethylformamide, C47H43Fe2N4O9
  67. Crystal structure of N1,N3-bis(2-hydroxyethyl)-N1, N1,N3,N3-tetramethylpropane-1,3-diaminium dibromide, C11H28Br2N2O2
  68. Crystal structure of (E)-N-(4-chlorophenyl)-1-(pyridin-2-yl)methanimine, C12H9ClN2
  69. Crystal structure of 8-bromo-6-oxo-2-phenyl-6H-pyrrolo[3,2,1-ij]quinoline-5-carbaldehyde, C18H11BrNO2
  70. Crystal structure of 1,4-bis(2-azidoethyl)piperazine-1,4-diium dichloride trihydrate, C8H18N8Cl2 ⋅ 3 H2O
  71. Crystal structure of (E)-4-bromo-N-(pyridin-2-ylmethylene)aniline, C12H9BrN2
  72. Crystal structure of bis[(2-(3-bromophenyl)-5-methyl-1,3-dioxane-5-carboxylato-κ-O)-(5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N′′,N′′′)]nickel(II), C40H60Br2N4NiO8
  73. The crystal structure of (1E,2E)-2-methyl-4-((7-oxo-7H-furo[3,2-g]chromen-9-yl)oxy)but-2-enal O-isonicotinoyl oxime–trichloromethane (3/1), C67H49Cl3N6O18
  74. Crystal structure of 3-(2-ethoxy-2-oxoethyl)-1-methyl-1H-imidazol-3-ium hexafluoridophosphate(V), C8H13F6N2O2P
  75. Crystal structure of bis[(2-(2-bromophenyl)-5-ethyl-1,3-dioxane-5-carboxylato-κO)-(5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N′′,N′′′)]nickel(II) hemihydrate C42H65Br2N4NiO8.5
  76. The crystal structure of N-(7-(4-fluorobenzylidene)-3-(4-fluorophenyl)-3,3a,4,5,6,7-hexahydro-2H-indazole-2-carbonothioyl)benzamide, C28H23F2N3OS
  77. The crystal structure of N1,N4-bis(pyridin-3-yl)cyclohexane-1,4-dicarboxamide, C18H20N4O2
  78. Crystal structure of (E)-2-(3,6-bis(ethylamino)-2,7-dimethyl-9H-xanthen-9-yl)-N′-((6-methylpyridin-2-yl)methylene)benzohydrazide – methanol (1/1), C34H37N5O3
  79. Crystal structure of 2-oxo-1-(pyrimidin-5-ylmethyl)-3-(3-(trifluoromethyl)phenyl)-1,2-dihydro-5l4-pyrido[1,2-a]pyrimidin-4-olate, C20H13F3N4O2
  80. Crystal structure of poly[(μ3-9H-carbazole-3,6-dicarboxylato-κ3O1: O2: O3)(μ2-4-(pyridin-4-yl)pyridine-κ2N1:N1′)zinc(II)], C19H11N2O4Zn
  81. Crystal structure of (E)-N′-((1,8-dihydropyren-1-yl)-methylene)picolinohydrazide, C23H15N3O
  82. Crystal structure of catena-poly{[μ2-1,2-bis(diphenylphosphino)ethane]dichloridocadmium(II)}, C26H24CdCl2P2
  83. Crystal structure of the 1:2 co-crystal between N,N′-bis(4-pyridylmethyl)oxalamide and acetic acid as a dihydrate, C14H14N4O2⋅2 C2H4O2⋅2 H2O
  84. Crystal structure of the co-crystal N,N′-bis(3-pyridylmethyl)oxalamide acetic acid (1/2), C14H14N4O2⋅2C2H4O2
  85. Crystal structure of the co-crystal N,N′-bis(4-pyridylmethyl)oxalamide and 2,3,5,6-tetrafluoro-1,4-di-iodobenzene (1/1), C14H14N4O2⋅C6F4I2
  86. Crystal structure of the co-crystal 4-[(4-carboxyphenyl)disulfanyl]benzoic acid–(1E,4E)-1-N,4-N-bis(pyridin-4-ylmethylidene)cyclohexane-1,4-diamine (1/1), C14H10O4S2⋅C18H20N4
  87. Crystal structure of hexacarbonyl-bis(μ2-di-n-propyldithiocarbamato-κ3S,S′:S3S:S:S′)-di-rhenium(I), C20H28N2O6Re2S4
  88. Crystal structure of fac-tricarbonyl-morpholine-κN-(morpholinocarbamodithioato-κ2S,S′)rhenium(I), C12H17N2O5ReS2
Heruntergeladen am 30.9.2025 von https://www.degruyterbrill.com/document/doi/10.1515/ncrs-2019-0159/html
Button zum nach oben scrollen