Abstract
C18H17N3O9, monoclinic, P21/c (no. 14), a = 15.3768(3) Å, b = 7.4510(2) Å, c = 15.6673(5) Å, β = 102.700(3)∘, V = 1751.13(8) Å3, Z = 4, R gt (F) = 0.0405, wR ref (F 2 ) = 0.1157, T = 100 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 needle |
| Size: | 0.20 × 0.15 × 0.13 mm |
| Wavelength: | Cu Kα radiation (1.54178 Å) |
| μ: | 1.12 mm−1 |
| Diffractometer, scan mode: | φ and ω |
| θmax, completeness: | 75.5°, 96 % |
| N(hkl)measured, N(hkl)unique, Rint: | 8608, 3365, 0.031 |
| Criterion for Iobs, N(hkl)gt: | Iobs > 2σ(Iobs), 2867 |
| N(param)refined: | 275 |
| Programs: | Rigaku [1], Diamond [2], SHELX [3, 4] |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).
| Atom | x | y | Z | Uiso*/Ueq |
|---|---|---|---|---|
| O1 | 0.12061 (7) | 0.69595 (17) | 0.37594 (7) | 0.0244 (3) |
| H1 | 0.113052 | 0.634840 | 0.418784 | 0.037* |
| O2 | 0.53339 (7) | 0.58249 (16) | 0.39153 (7) | 0.0235 (3) |
| O3 | 0.32749 (6) | 0.75673 (15) | 0.19759 (7) | 0.0198 (2) |
| O4 | 0.82537 (7) | 0.70179 (17) | 0.16493 (8) | 0.0256 (3) |
| H4 | 0.823354 | 0.693987 | 0.111048 | 0.038* |
| O5 | 0.73960 (7) | 0.64011 (19) | 0.00372 (8) | 0.0322 (3) |
| O6 | 0.60442 (8) | 0.54183 (19) | −0.02255 (8) | 0.0316 (3) |
| N1 | 0.09657 (8) | 0.68739 (18) | 0.15205 (8) | 0.0192 (3) |
| H1A | 0.052415 | 0.763503 | 0.111274 | 0.023* |
| N2 | 0.66921 (8) | 0.6071 (2) | 0.02719 (9) | 0.0238 (3) |
| C1 | 0.20526 (9) | 0.6755 (2) | 0.36637 (10) | 0.0200 (3) |
| C2 | 0.27290 (10) | 0.6086 (2) | 0.43455 (10) | 0.0216 (3) |
| H2 | 0.259206 | 0.572554 | 0.488261 | 0.026* |
| C3 | 0.35888 (9) | 0.5956 (2) | 0.42317 (10) | 0.0202 (3) |
| H3 | 0.404482 | 0.551862 | 0.469589 | 0.024* |
| C4 | 0.38002 (9) | 0.6459 (2) | 0.34403 (10) | 0.0186 (3) |
| C5 | 0.31153 (9) | 0.7085 (2) | 0.27698 (10) | 0.0175 (3) |
| C6 | 0.22313 (9) | 0.7269 (2) | 0.28627 (10) | 0.0181 (3) |
| C7 | 0.47196 (9) | 0.6341 (2) | 0.33206 (10) | 0.0190 (3) |
| C8 | 0.48336 (9) | 0.6853 (2) | 0.24492 (10) | 0.0187 (3) |
| C9 | 0.41175 (9) | 0.7431 (2) | 0.18478 (10) | 0.0198 (3) |
| H9 | 0.421175 | 0.776801 | 0.129042 | 0.024* |
| C10 | 0.57229 (9) | 0.6802 (2) | 0.22197 (10) | 0.0191 (3) |
| C11 | 0.58094 (9) | 0.6404 (2) | 0.13793 (10) | 0.0204 (3) |
| H11 | 0.529840 | 0.607637 | 0.094657 | 0.024* |
| C12 | 0.66455 (10) | 0.6481 (2) | 0.11624 (10) | 0.0207 (3) |
| C13 | 0.74188 (9) | 0.6910 (2) | 0.17902 (11) | 0.0209 (3) |
| C14 | 0.73261 (9) | 0.7221 (2) | 0.26399 (10) | 0.0214 (3) |
| H14 | 0.784233 | 0.745257 | 0.308495 | 0.026* |
| C15 | 0.65004 (10) | 0.7203 (2) | 0.28530 (10) | 0.0209 (3) |
| H15 | 0.645691 | 0.746403 | 0.343561 | 0.025* |
| C16 | 0.15256 (9) | 0.8146 (2) | 0.21697 (10) | 0.0189 (3) |
| H16A | 0.181891 | 0.901023 | 0.184356 | 0.023* |
| H16B | 0.112438 | 0.883870 | 0.246167 | 0.023* |
| C17 | 0.04345 (10) | 0.5584 (2) | 0.19292 (11) | 0.0239 (3) |
| H17A | 0.083930 | 0.480001 | 0.233581 | 0.036* |
| H17B | 0.005840 | 0.485584 | 0.147187 | 0.036* |
| H17C | 0.005735 | 0.625112 | 0.224820 | 0.036* |
| C18 | 0.14978 (10) | 0.5927 (2) | 0.09690 (10) | 0.0217 (3) |
| H18A | 0.180231 | 0.681185 | 0.067531 | 0.033* |
| H18B | 0.110018 | 0.519481 | 0.052959 | 0.033* |
| H18C | 0.194055 | 0.515220 | 0.133985 | 0.033* |
| O7 | 0.06716 (7) | 0.31052 (18) | 0.59633 (8) | 0.0300 (3) |
| O8 | 0.10530 (7) | 0.53271 (16) | 0.52423 (7) | 0.0242 (3) |
| O9 | 0.06919 (7) | 0.27676 (18) | 0.45887 (8) | 0.0297 (3) |
| N3 | 0.08034 (7) | 0.37109 (18) | 0.52690 (9) | 0.0213 (3) |
1 Source of materials
All reagents and chemicals were purchased from commercial sources and used without further purification. The 8-((dimethylamino)methyl)-7-hydroxy-3-(4-hydroxyphenyl)-4H-chromen-4-one was synthesized via a Mannich reaction. In a typical experiment a formaldehyde solution (10 mL, 37 %), dimethylamine water solution (30 mL, 40 %) and daidzein (6.4 g, 0.025 mol) were added to ethanol (350 mL, 99 %) and stirred for 2 h at 328 K. After cooling, most of the volatile solvents were removed under vacuum on a rotatory evaporator at 308 K. After cooling for 30 min, the mixture was filtered and the residue was washed with water. Then the residue was dried at 383 K. The crude product (4.3 g) was obtained. The crude product was purified by thin layer chromatography (DMSO as solvent, CHCl3–CH3OH = 1:1, v/v). 8-((dimethylamino)methyl)-7-hydroxy-3-(4-hydroxyphenyl)-4H-chromen-4-one was obtained. A mixture of Mannich base described before (0.016 g), sodium nitrite (0.041 g), 6 mol/L nitric acid (0.50 mL) and water (8 mL) was sealed in a 20 mL vial and stood for 10 min. The mixture was sonicated for 1 min. The colour of the mixture turned to green. Then the mixture was heated at 363 K for 3 h. Yellow needle crystals of 1-(7-hydroxy-3-(4-hydroxy-3-nitrophenyl)-4-oxo-4H-chromen-8-yl)-N,N-dimethylmethanaminium nitrate were obtained. 1H NMR (400 MHz, DMSO-d 6 ) δ: 11.83 (s, 1H, H4), 11.19 (s, 1H, H1), 8.53 (s, 1H,H9), 8.16 (d, J = 2.1 Hz, 1H, H11), 8.10 (d, J = 8.9 Hz, 1H,H3), 7.75 (dd, J = 8.7, 2.1 Hz, 1H, H15), 7.21 (d, J = 8.7 Hz, 1H, H14), 7.14 (d, J = 8.9 Hz, 1H, H2), 4.45 (s, 2H, H16A, H16B), 2.85 (s, 6H, H18A, H18B, H18C, H17A, H17B, H17C).13C NMR (100 MHz, DMSO-d6) δ:174.76(C7), 162.52(C1), 156.62(C5), 154.17(C9), 152.32(C13), 137.02(C12), 135.93(C15), 129.25(C10), 125.73(C3), 123.17(C8), 122.06(C11), 119.45(C14), 116.94(C4), 115.11(C6), 104.77(C2), 49.37(C16), 43.26(C17, C18). IR spectra (potassium bromide pellet) were recorded on a Nicolet 6700. IR (v/cm−1): 3286, 3089, 1646, 1626, 1600, 1536, 1469, 1430, 1385, 1311, 1220, 1163, 1138, 1083, 1048, 1037, 1000, 970, 951, 924, 892, 862, 848, 806, 798, 779, 763, 752, 706, 658, 641, 578, 558, 538.
2 Experimental details
Carbon-bound H atoms were placed in calculated positions and were included in the refinement in the riding model approximation, with Uiso(H) set to 1.2 Ueq(C). The oxygen-bound and nitrogen-bound H atoms were located on a difference Fourier map.
3 Comment
In the past decades, much attention has been focused on the nitration of flavonoids [5], [6], [7], [8]. Some of nitro derivatives of flavonoids possess important biological activities. Our previous investigations showed that Daizein Mannich base derivatives of amino acid react with nitrating agent [9, 10]. To extend this research, we used the Daizein Mannich base derivative of an aliphatic amine to react with a nitrating agent and got the title compound. In this study, the title compound was obtained from 8-((dimethylamino)methyl)-7-hydroxy-3-(4-hydroxyphenyl)-4H-chromen-4-one via a nitration substitution reaction.
The title compound contains one cation and one nitrate ion in the asymmetric unit (cf. the figure). The bond distances and bond angles are in normal ranges [9, 10]. The dihedral angle between planar rings B (C10–C15) and C (C7–C9/O3/C5/C4) is 34.05°. The nitrogen atom N1 is protonated. The molecule shows an intramolecular O4–H4⃛O5 hydrogen bond of length 1.922 Å. There exist various O–H⃛O and N–H⃛O hydrogen bonds. There are π⃛π stacking interactions between C1–C6 phenyl rings and C10–C15 phenyl rings from adjacent compounds. The centroid-centroid distance is 3.78 Å. Together with hydrogen bonds interactions and π⃛π stacking interactions a three-dimensional network is obtained.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: Guangxi Natural Science Foundation of China (No. 2020GXNSFBA297138) and 2021 High-level Talents Scientific Research Startup Fund of Hechi University (No. 2021GCC021).
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
References
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© 2023 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 (N-([1,1′:4′,1″-terphenyl]-4,4′-diethyl)-2-(bis(pyridin-2-ylmethyl)amino)acetamide-κ4N,N,N″, O)tri(nitrato-kO, O′) samarium(III) - methanol - acetonitrile (1/1/1), C40H39SmN8O14
- The crystal structure of 6,6′-(((2-(dimethylamino)ethyl)azanediyl)bis(methylene))bis(2-chloro-4-methyl phenolate-κ4N,N′,O,O′)-(pyridine-2,6-dicarboxylato-N,O,O′)-titanium(IV), C27H27Cl2N3O6Ti
- N′-[(1E)-(4–Fluorophenyl)methylidene]adamantane-1-carbohydrazide, C18H21FN2O
- Crystal structure of 4-bromo-3-nitro-1H-pyrazole-5-carboxylic acid monohydrate, C4H2N3BrO4·H2O
- Crystal structure of dipyridine-k1N-tris(2,2,6,6-tetramethyl-5-oxohept-3-en-3-olato-k2O,O′)dysprosium(III), DyC43H67O6N2
- Crystal structure of cyclo[tetraiodido-bis{μ2-1-[(benzotriazol-1-yl)methyl]-1-H-1,3-(2-isopropyl-imidazol)-k2N:N}dicadmiun(II)], C26H30N10Cd2I4
- The crystal structure of tert-butyl (E)-3-(2-(benzylideneamino)phenyl)-1H-indole-1-carboxylate, C26H24N2O2
- The crystal structure of 4-(3-carboxy-1-cyclopropyl-6-fluoro-8-methoxy-4-oxo-1,4- dihydroquinolin-7-yl)-2-methylpiperazin-1-ium 2,5-dihydroxybenzoate methanol solvate, C27H32FN3O9
- Crystal structure of (μ2-1-(4,4′-bipyridine-κ2N:N′)-bis[diaqua-(4-iodopyridine-2,6-dicarboxylato-κ3O,N,O′)–cobalt(II)], C24H20Co2I2N4O12
- The crystal structure of dimethyl 4,4′-(10,20-diphenylporphyrin-5,15-diyl)dibenzoate dichloromethane solvate, C49H36N4O4Cl2
- (E)-2-((E)-4-(2,6,6-trimethylcyclohex-1-en-1-yl)but-3-en-2-ylidene)hydrazine-1-carbothioamide C14H23N3S1
- The crystal structure of [1-(4-(trifluoromethyl)phenyl)-3,4-dihydroquinolin-2(1H)-one], C16H12F3NO
- Crystal structure of (E)-2-amino-N′-((3-hydroxy-5-(hydroxymethyl)-2-methylpyridin-4-yl)methylene)benzohydrazide – dimethylformamide – water (1/1/2), C15H16N4O3·C3H7NO·2H2O
- Crystal structure of 3-(4-bromophenyl)-5-methyl-1H-pyrazole, C10H9BrN2
- Crystal structure of 1,10-phenanthrolinium bromide dihydrate, C12H9N2Br
- Crystal structure of N-(4′-chloro-[1,1′-biphenyl]-2-yl)formamide, C13H10ClNO
- The crystal structure of nitroterephthalic acid, C8H5NO6
- Crystal structure of (2-((4-bromo-2,6-dichlorophenyl)amino)phenyl) (morpholino)methanone, C17H15BrCl2N2O2
- Crystal structure of tetraaqua-bis(ethanol-κO)-tetrakis(μ2-trifluoroacetate-κ2O:O′)-bis(trifluoroacetate-κ2O)digadolinium(III) Gd2C16H20O18F18
- The crystal structure of dimethyl 4,4′-[10,20-bis(2,6-difluorophenyl)porphyrin-5,15-diyl]dibenzoate chloroform solvate, C50H32Cl6F4N4O4
- The crystal structure of N,N′-((nitroazanediyl)bis(methylene))diacetamide, C6H12O4N4
- The crystal structure of [bis(2,2′-bipyridine-6-carboxylato-κ3N,N,O)magnesium(II)]dihydrate, C22H18N4O6Mg
- Crystal structure of poly[diaqua-(bis(μ2-1,4-bis(imidazol-1-ylmethyl)benzene)-κ2N,N′] cobalt(II)-tetraqua-bis(1,4-bis(imidazol-1-ylmethyl)benzene)-κ1N)-cobalt(II) di(2,5-thiophenedicarboxylate) dihydrate, C68H76Co2N16O16S2
- Crystal structure of poly[chlorido-μ2-chlorido-(μ2-1-[(2-ethyl-4-methyl-1H-imidazol-1-yl)methyl]-1H-benzotriazole-κN:N’)cadmium(II)], C13H15CdN5Cl2
- The crystal structure of (4-hydroxybenzenesulfonate)-k1O-6,6′-((1E,1′E)- (ethane-1,2-diylbis(azaneylylidene))bis(methaneylylidene)) bis(2-methoxyphenol)-κ2N,N,μ2O,O,κ2O, O)-(methanol)-cobalt(II) sodium(I), C25H27CoN2NaO9S
- Crystal structure of (1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)(4-((2-methyl-6-(trifluoromethyl)pyrimidin-4-yl)amino)piperidin-1-yl)methanone, C17H18F6N6O
- Crystal structure of bis{[(cyclohexylimino)(phenylimino)-l5-(methyl)diethylazane-κ2N:N′]-(ethyl)-zinc(II)]}, C38H62N6Zn2
- Crystal structure of 2-[(4-bromobenzyl)thio]-5-(5-bromothiophen-2-yl)-1,3,4-oxadiazole, C13H8Br2N2OS2
- Crystal structure of 10-methoxy-7,11b,12,13-tetrahydro-6H-pyrazino [2′,3′:5,6]pyrazino[2,1-a]isoquinoline, C15H16N4O
- The crystal structure of 1-propyl-2-nitro-imidazole oxide, C6H9N3O3
- The crystal structure of 3-nitrobenzene-1,2-dicarboxylic acid–2-ethoxybenzamide (1/1), C17H16N2O8
- The structure of RUB-1, (C8H16N)6[B6Si48O108], a boron containing levyne-type zeolite, occluding N-methyl-quinuclidinium in the cage-like pores
- The crystal structure of diaqua-(naphthalene-4,5-dicarboxylate-1,8-dicarboxylic anhydride-κ1O)-(4′-(4-(1H-benzimidazolyl-1-yl)phenyl)-2,2′:6′,2″-terpyridine-κ3N,N′,N″)–manganese(II) dihydrate, C42H27MnN5O9·2H2O
- Crystal structure of 6,6′-((1E,1′E)-hydrazine-1,2-diylidenebis(methanylylidene))bis (3-(3-bromopropoxy)phenol), C20H22Br2N2O4
- The crystal structure of 3-(2-hydroxyphenyl)-4-phenyl-6-(p-tolyl)-2H-pyran-2-one, C24H18O3
- Crystal structure of bis(μ2-2-(1,5-dimethyl–3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)imino)methyl)phenolato-κ4O:O,N,O′)-(nitrato-κ2O,O′)dicobalt(II), C36H32Co2N8O4
- Synthesis and crystal structure of (3E,5S,10S,13S,14S,17Z)-17-ethylidene-10,13-dimethylhexadecahydro-3H-cyclopenta[α] phenanthren-3-one O-(4-fluorobenzoyl) oxime, C28H36FNO2
- The crystal structure of 4-aminiumbiphenyl benzenesulfonate, C18H17NO3S
- Synthesis and crystal structure of 1-(7-hydroxy-3-(4-hydroxy-3-nitrophenyl)-4-oxo-4H-chromen-8-yl)-N,N-dimethylmethanaminiumnitrate, C18H17N3O9
- Crystal structure of N-(Ar)-N′-(Ar′)-formamidine, C14H12Br2N2O
- The crystal structure of 4-(2,4-dichlorophenyl)-2-(4-fluorophenyl)-5-methyl-1H-imidazole, C16H11Cl2FN2
- Crystal structure of 1-(4–chlorophenyl)-4-benzoyl-3-methyl-1H-pyrazol-5-ol, C17H13ClN2O2
- The crystal structure of 5-amino-1-methyl-4-nitroimidazole, C4H6O2N4
- Crystal structure of 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene-N,N′-bis(1,3-bis(2,6-diisopropylphenyl)-1,3-dihydro-2H-1,3,2-diazaborol-2-yl)-l2-germenediamine, C63H94B2GeN8
- The crystal structure of (bromido, chlorido)-tricarbonyl-(5,5′-dimethyl-2,2′-bipyridine)-rhenium(I), C15H12Br0.2Cl0.8N2O3Re1
- Crystal structure of [N(E),N′(E)]-N,N′-(1,4-phenylenedimethylidyne)bis-3,5-bis(propan-2-yl)-1H-pyrazol-4-amine, C26H36N6
- The crystal structure of poly[2-(4-carboxypyridin-3-yl)terephthalpoly[diaqua-(μ4-2-(6-carboxylatopyridin-3-yl)terephthalato-κ5O,N:O′:O″,O‴)]) cadmium(II)] dihydrate, C28H20Cd3N2O16
- Crystal structure of [tetraaqua-bis((3-carboxy-5-(pyridin-4-yl)benzoate-κ1N)cobalt(II)] tetrahydrate, C26H32CoN2O16
- Crystal structure of bis(μ2-azido-κ2N:N)-tetrakis(azido-κ1N)-tetrakis(1,10-phenanthroline-κ2N,N′)dibismuth(III), C48H32N26Bi2
- Crystal structure of (Z)-N-(4-(4-(4-((4,5,6-trimethoxy-3-oxobenzofuran-2(3H)-ylidene)methyl)phenoxy)butoxy)phenyl)acetamide, C30H31NO8
- Crystal structure of poly[diaqua-(μ2-1,3-di(1H-imidazol-1-yl)propane-κ2N:N′)-bis(μ2-5-carboxybenzene-1,3-dicarboxylato-O,O′:O″)-aqua-di-zinc dihydrate solvate], C27H28N4O16Zn2
- Crystal structure of 2-(3,5,5-trimethylcyclohex-2-en-1-ylidene)malononitrile, C12H14N2
- Crystal structure of chlorido-(5-nitro-2-phenylpyridine-κ2N,C)-[(methylsulfinyl)methane-κ1S]platinum(II), C13H13ClN2O3PtS
- The crystal structure of the co-crystal 1,4-dioxane–4,6-bis(nitroimino)-1,3,5-triazinan-2-one(2/1), C11H19N7O9
- Crystal structure of [N(E),N′(E)]-N,N′-(1,4-phenylenedimethylidyne)bis-3,5-dimethyl-1H-pyrazol-4-amine di-methanol solvate, C18H20N6·2(CH3OH)
- Crystal structure of catena-poly[bis(μ2-azido-k2N:N′)-(nitrato-K2N:N′)-bis(1,10-phenanthroline-K2N:N′)samarium(III)], C24H16N11O3Sm
- Crystal structure of (Z)-2-(4-((5-bromopentyl)oxy)benzylidene)-4,5,6-trimethoxybenzofuran-3(2H)-one, C23H25BrO6
- Crystal structure of bis(3,5-dimethyl-1H-pyrazol-4-ammonium) tetrafluoroterephthate, 2[C5H10N3][C8F4O4]
- Crystal structure of 2-amino-4-(2-fluoro-4-(trifluoromethyl)phenyl)-9-methoxy-1,4,5,6-tetrahydrobenzo[h]quinazolin-3-ium chloride, C20H18ClF4N3O
- Crystal structure of 6-(pyridin-3-yl)-1,3,5-triazine-2,4-diamine-sebacic acid (2/1), C13H17N6O2
Articles in the same Issue
- Frontmatter
- New Crystal Structures
- The crystal structure of (N-([1,1′:4′,1″-terphenyl]-4,4′-diethyl)-2-(bis(pyridin-2-ylmethyl)amino)acetamide-κ4N,N,N″, O)tri(nitrato-kO, O′) samarium(III) - methanol - acetonitrile (1/1/1), C40H39SmN8O14
- The crystal structure of 6,6′-(((2-(dimethylamino)ethyl)azanediyl)bis(methylene))bis(2-chloro-4-methyl phenolate-κ4N,N′,O,O′)-(pyridine-2,6-dicarboxylato-N,O,O′)-titanium(IV), C27H27Cl2N3O6Ti
- N′-[(1E)-(4–Fluorophenyl)methylidene]adamantane-1-carbohydrazide, C18H21FN2O
- Crystal structure of 4-bromo-3-nitro-1H-pyrazole-5-carboxylic acid monohydrate, C4H2N3BrO4·H2O
- Crystal structure of dipyridine-k1N-tris(2,2,6,6-tetramethyl-5-oxohept-3-en-3-olato-k2O,O′)dysprosium(III), DyC43H67O6N2
- Crystal structure of cyclo[tetraiodido-bis{μ2-1-[(benzotriazol-1-yl)methyl]-1-H-1,3-(2-isopropyl-imidazol)-k2N:N}dicadmiun(II)], C26H30N10Cd2I4
- The crystal structure of tert-butyl (E)-3-(2-(benzylideneamino)phenyl)-1H-indole-1-carboxylate, C26H24N2O2
- The crystal structure of 4-(3-carboxy-1-cyclopropyl-6-fluoro-8-methoxy-4-oxo-1,4- dihydroquinolin-7-yl)-2-methylpiperazin-1-ium 2,5-dihydroxybenzoate methanol solvate, C27H32FN3O9
- Crystal structure of (μ2-1-(4,4′-bipyridine-κ2N:N′)-bis[diaqua-(4-iodopyridine-2,6-dicarboxylato-κ3O,N,O′)–cobalt(II)], C24H20Co2I2N4O12
- The crystal structure of dimethyl 4,4′-(10,20-diphenylporphyrin-5,15-diyl)dibenzoate dichloromethane solvate, C49H36N4O4Cl2
- (E)-2-((E)-4-(2,6,6-trimethylcyclohex-1-en-1-yl)but-3-en-2-ylidene)hydrazine-1-carbothioamide C14H23N3S1
- The crystal structure of [1-(4-(trifluoromethyl)phenyl)-3,4-dihydroquinolin-2(1H)-one], C16H12F3NO
- Crystal structure of (E)-2-amino-N′-((3-hydroxy-5-(hydroxymethyl)-2-methylpyridin-4-yl)methylene)benzohydrazide – dimethylformamide – water (1/1/2), C15H16N4O3·C3H7NO·2H2O
- Crystal structure of 3-(4-bromophenyl)-5-methyl-1H-pyrazole, C10H9BrN2
- Crystal structure of 1,10-phenanthrolinium bromide dihydrate, C12H9N2Br
- Crystal structure of N-(4′-chloro-[1,1′-biphenyl]-2-yl)formamide, C13H10ClNO
- The crystal structure of nitroterephthalic acid, C8H5NO6
- Crystal structure of (2-((4-bromo-2,6-dichlorophenyl)amino)phenyl) (morpholino)methanone, C17H15BrCl2N2O2
- Crystal structure of tetraaqua-bis(ethanol-κO)-tetrakis(μ2-trifluoroacetate-κ2O:O′)-bis(trifluoroacetate-κ2O)digadolinium(III) Gd2C16H20O18F18
- The crystal structure of dimethyl 4,4′-[10,20-bis(2,6-difluorophenyl)porphyrin-5,15-diyl]dibenzoate chloroform solvate, C50H32Cl6F4N4O4
- The crystal structure of N,N′-((nitroazanediyl)bis(methylene))diacetamide, C6H12O4N4
- The crystal structure of [bis(2,2′-bipyridine-6-carboxylato-κ3N,N,O)magnesium(II)]dihydrate, C22H18N4O6Mg
- Crystal structure of poly[diaqua-(bis(μ2-1,4-bis(imidazol-1-ylmethyl)benzene)-κ2N,N′] cobalt(II)-tetraqua-bis(1,4-bis(imidazol-1-ylmethyl)benzene)-κ1N)-cobalt(II) di(2,5-thiophenedicarboxylate) dihydrate, C68H76Co2N16O16S2
- Crystal structure of poly[chlorido-μ2-chlorido-(μ2-1-[(2-ethyl-4-methyl-1H-imidazol-1-yl)methyl]-1H-benzotriazole-κN:N’)cadmium(II)], C13H15CdN5Cl2
- The crystal structure of (4-hydroxybenzenesulfonate)-k1O-6,6′-((1E,1′E)- (ethane-1,2-diylbis(azaneylylidene))bis(methaneylylidene)) bis(2-methoxyphenol)-κ2N,N,μ2O,O,κ2O, O)-(methanol)-cobalt(II) sodium(I), C25H27CoN2NaO9S
- Crystal structure of (1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)(4-((2-methyl-6-(trifluoromethyl)pyrimidin-4-yl)amino)piperidin-1-yl)methanone, C17H18F6N6O
- Crystal structure of bis{[(cyclohexylimino)(phenylimino)-l5-(methyl)diethylazane-κ2N:N′]-(ethyl)-zinc(II)]}, C38H62N6Zn2
- Crystal structure of 2-[(4-bromobenzyl)thio]-5-(5-bromothiophen-2-yl)-1,3,4-oxadiazole, C13H8Br2N2OS2
- Crystal structure of 10-methoxy-7,11b,12,13-tetrahydro-6H-pyrazino [2′,3′:5,6]pyrazino[2,1-a]isoquinoline, C15H16N4O
- The crystal structure of 1-propyl-2-nitro-imidazole oxide, C6H9N3O3
- The crystal structure of 3-nitrobenzene-1,2-dicarboxylic acid–2-ethoxybenzamide (1/1), C17H16N2O8
- The structure of RUB-1, (C8H16N)6[B6Si48O108], a boron containing levyne-type zeolite, occluding N-methyl-quinuclidinium in the cage-like pores
- The crystal structure of diaqua-(naphthalene-4,5-dicarboxylate-1,8-dicarboxylic anhydride-κ1O)-(4′-(4-(1H-benzimidazolyl-1-yl)phenyl)-2,2′:6′,2″-terpyridine-κ3N,N′,N″)–manganese(II) dihydrate, C42H27MnN5O9·2H2O
- Crystal structure of 6,6′-((1E,1′E)-hydrazine-1,2-diylidenebis(methanylylidene))bis (3-(3-bromopropoxy)phenol), C20H22Br2N2O4
- The crystal structure of 3-(2-hydroxyphenyl)-4-phenyl-6-(p-tolyl)-2H-pyran-2-one, C24H18O3
- Crystal structure of bis(μ2-2-(1,5-dimethyl–3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)imino)methyl)phenolato-κ4O:O,N,O′)-(nitrato-κ2O,O′)dicobalt(II), C36H32Co2N8O4
- Synthesis and crystal structure of (3E,5S,10S,13S,14S,17Z)-17-ethylidene-10,13-dimethylhexadecahydro-3H-cyclopenta[α] phenanthren-3-one O-(4-fluorobenzoyl) oxime, C28H36FNO2
- The crystal structure of 4-aminiumbiphenyl benzenesulfonate, C18H17NO3S
- Synthesis and crystal structure of 1-(7-hydroxy-3-(4-hydroxy-3-nitrophenyl)-4-oxo-4H-chromen-8-yl)-N,N-dimethylmethanaminiumnitrate, C18H17N3O9
- Crystal structure of N-(Ar)-N′-(Ar′)-formamidine, C14H12Br2N2O
- The crystal structure of 4-(2,4-dichlorophenyl)-2-(4-fluorophenyl)-5-methyl-1H-imidazole, C16H11Cl2FN2
- Crystal structure of 1-(4–chlorophenyl)-4-benzoyl-3-methyl-1H-pyrazol-5-ol, C17H13ClN2O2
- The crystal structure of 5-amino-1-methyl-4-nitroimidazole, C4H6O2N4
- Crystal structure of 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene-N,N′-bis(1,3-bis(2,6-diisopropylphenyl)-1,3-dihydro-2H-1,3,2-diazaborol-2-yl)-l2-germenediamine, C63H94B2GeN8
- The crystal structure of (bromido, chlorido)-tricarbonyl-(5,5′-dimethyl-2,2′-bipyridine)-rhenium(I), C15H12Br0.2Cl0.8N2O3Re1
- Crystal structure of [N(E),N′(E)]-N,N′-(1,4-phenylenedimethylidyne)bis-3,5-bis(propan-2-yl)-1H-pyrazol-4-amine, C26H36N6
- The crystal structure of poly[2-(4-carboxypyridin-3-yl)terephthalpoly[diaqua-(μ4-2-(6-carboxylatopyridin-3-yl)terephthalato-κ5O,N:O′:O″,O‴)]) cadmium(II)] dihydrate, C28H20Cd3N2O16
- Crystal structure of [tetraaqua-bis((3-carboxy-5-(pyridin-4-yl)benzoate-κ1N)cobalt(II)] tetrahydrate, C26H32CoN2O16
- Crystal structure of bis(μ2-azido-κ2N:N)-tetrakis(azido-κ1N)-tetrakis(1,10-phenanthroline-κ2N,N′)dibismuth(III), C48H32N26Bi2
- Crystal structure of (Z)-N-(4-(4-(4-((4,5,6-trimethoxy-3-oxobenzofuran-2(3H)-ylidene)methyl)phenoxy)butoxy)phenyl)acetamide, C30H31NO8
- Crystal structure of poly[diaqua-(μ2-1,3-di(1H-imidazol-1-yl)propane-κ2N:N′)-bis(μ2-5-carboxybenzene-1,3-dicarboxylato-O,O′:O″)-aqua-di-zinc dihydrate solvate], C27H28N4O16Zn2
- Crystal structure of 2-(3,5,5-trimethylcyclohex-2-en-1-ylidene)malononitrile, C12H14N2
- Crystal structure of chlorido-(5-nitro-2-phenylpyridine-κ2N,C)-[(methylsulfinyl)methane-κ1S]platinum(II), C13H13ClN2O3PtS
- The crystal structure of the co-crystal 1,4-dioxane–4,6-bis(nitroimino)-1,3,5-triazinan-2-one(2/1), C11H19N7O9
- Crystal structure of [N(E),N′(E)]-N,N′-(1,4-phenylenedimethylidyne)bis-3,5-dimethyl-1H-pyrazol-4-amine di-methanol solvate, C18H20N6·2(CH3OH)
- Crystal structure of catena-poly[bis(μ2-azido-k2N:N′)-(nitrato-K2N:N′)-bis(1,10-phenanthroline-K2N:N′)samarium(III)], C24H16N11O3Sm
- Crystal structure of (Z)-2-(4-((5-bromopentyl)oxy)benzylidene)-4,5,6-trimethoxybenzofuran-3(2H)-one, C23H25BrO6
- Crystal structure of bis(3,5-dimethyl-1H-pyrazol-4-ammonium) tetrafluoroterephthate, 2[C5H10N3][C8F4O4]
- Crystal structure of 2-amino-4-(2-fluoro-4-(trifluoromethyl)phenyl)-9-methoxy-1,4,5,6-tetrahydrobenzo[h]quinazolin-3-ium chloride, C20H18ClF4N3O
- Crystal structure of 6-(pyridin-3-yl)-1,3,5-triazine-2,4-diamine-sebacic acid (2/1), C13H17N6O2