Abstract
C5H7Cl3N4O3, monoclinic, P21/c (no. 14), a = 5.745(3) Å, b = 29.120(13) Å, c = 6.813(3) Å, β = 107.649(6)°, V = 1086.1(9) Å3, Z = 4, R gt (F) = 0.0411, wR ref (F 2) = 0.1163, T = 296 K.
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: | Colourless block |
Size: | 0.20 × 0.20 × 0.20 mm |
Wavelength: | MoKα radiation (0.71073 Å) |
μ: | 0.84 mm−1 |
Diffractometer, scan mode: | Bruker APEX-II, φ and ω |
θ max, completeness: | 27.6°, >99 % |
N(hkl)measured, N(hkl)unique, R int: | 6479, 2502, 0.023 |
Criterion for I obs, N(hkl)gt: | I obs > 2σ(I obs), 2,118 |
N(param)refined: | 167 |
Programs: | Olex2 1 , SHELX 2 , 3 , Bruker 4 |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).
Atom | x | y | z | U iso*/U eq |
---|---|---|---|---|
C1 | 0.7127 (5) | 0.69011 (8) | 0.2759 (4) | 0.0431 (6) |
H1 | 0.713916 | 0.720247 | 0.230982 | 0.052* |
N1 | 0.8127 (4) | 0.65474 (7) | 0.2121 (3) | 0.0401 (4) |
H1A | 0.889877 | 0.655881 | 0.122033 | 0.048* |
Cl1 | 0.71267 (14) | 0.55584 (2) | 0.70060 (10) | 0.0547 (2) |
C2 | 0.7749 (4) | 0.61569 (7) | 0.3115 (3) | 0.0320 (4) |
O2 | 0.3570 (4) | 0.60339 (6) | 0.8231 (3) | 0.0483 (4) |
H2 | 0.254784 | 0.618127 | 0.858413 | 0.072* |
N2 | 0.6108 (4) | 0.67580 (6) | 0.4138 (3) | 0.0367 (4) |
H2A | 0.532247 | 0.692765 | 0.475578 | 0.044* |
C5 | 0.8502 (4) | 0.57083 (8) | 0.2584 (3) | 0.0387 (5) |
Cl2a | 1.12042 (19) | 0.56408 (4) | 0.2188 (2) | 0.0477 (4) |
N3a | 0.6892 (15) | 0.5369 (2) | 0.2383 (18) | 0.0354 (15) |
O1a | 0.7811 (4) | 0.49535 (8) | 0.1912 (4) | 0.0505 (7) |
H1Ba | 0.683178 | 0.474733 | 0.189115 | 0.076* |
Cl2Ab | 0.7215 (16) | 0.5264 (2) | 0.2397 (19) | 0.0389 (16) |
N3Ab | 1.086 (2) | 0.5794 (4) | 0.231 (2) | 0.042 (2) |
O1Ab | 1.1701 (14) | 0.5372 (3) | 0.1728 (13) | 0.0438 (18) |
H1AAb | 1.317674 | 0.538749 | 0.190988 | 0.066* |
C3 | 0.5725 (4) | 0.60623 (7) | 0.6026 (3) | 0.0317 (4) |
Cl3 | 1.04629 (13) | 0.68544 (2) | −0.11491 (10) | 0.0495 (2) |
O3 | 1.3573 (4) | 0.77021 (6) | 0.1020 (3) | 0.0570 (5) |
H3A | 1.278113 | 0.786170 | 0.177639 | 0.085* |
H3B | 1.244903 | 0.747670 | 0.059739 | 0.085* |
N4 | 0.4138 (4) | 0.62623 (6) | 0.6663 (3) | 0.0365 (4) |
C4 | 0.6498 (4) | 0.62945 (7) | 0.4433 (3) | 0.0302 (4) |
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aOccupancy: 0.772(4), bOccupancy: 0.228(4).
1 Source of material
Add 0.01 mol 4,5-dicyanoimidazole and 0.04 mol hydroxylamine aqueous solution to the reactor. The temperature of the reactor was maintained at 298.15 K and the reaction is for 2 h. After the reaction is completed, the reaction solution is filtered. Remove the filtrate and retain the precipitate. Add 0.01 mol above solid and 20 mL NaNO2 to the reactor. The temperature of the reactor was maintained at 273 K. 10 mL 37 % hydrochloric acid is slowly added dropwise into the reaction for 2 h. After the reaction is completed, the reaction solution is filtered. Remove the filtrate and retain the white solid. The white solid is dissolved in methanol and is volatilized at room temperature to obtain clear colourless block crystals.
2 Experimental details
Hydrogen atoms were placed in their geometrically idealized positions and constrained to ride on their parent atoms. All the non-hydrogen atoms were refined anisotropically.
3 Comment
Imidazole compounds and their energetic salts are research hotspots in the field of energetic materials in various countries. 5 , 6 , 7 , 8 4,5-Dicyanoimidazole is an important imidazole compound that has been extensively studied. 9 , 10 The title compound was obtained by reacting 4,5-dicyanoimidazole, hydroxylamine aqueous solution and 37 % hydrochloric acid. The title compound is an organic compound with high research value in the preparation of imidazole energetic salts.
The bond lengths and angles in the title molecule are in the expected ranges. 11 The four atoms Cl2, C5, N3, O1 are in the same plane and the four atoms Cl1, C3, N4, O2 are also in the same plane. The dihedral angle formed by imidazole ring and place of Cl2, C5, N3, O1 is 41.514° and the dihedral angle formed by imidazole ring and place of Cl1, C3, N4, O2 is 21.1°.
The title compound was obtained by reacting 4,5-dicyanoimidazole, hydroxylamine aqueous solution and 37 % hydrochloric acid. During the reaction, hydroxylamine molecules are free in solution in the form –NH2 and –OH and hydrochloric acid is free in solution in the form –Cl. The –CN triple bond of 4,5-dicyanoimidazole becomes double bond, with the C atom connected to –Cl and the N atom connected to –OH, generating the (4Z,5E)-N′4,N′5-dihydroxy-1H-imidazole-4,5-bis(carbimidoyl) dichloride molecule. Due to the presence of a large amount of hydrochloric acid in the solution, the title salt was obtained.
Funding source: National Science Foundation of China
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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: This work was supported by National Science Foundation of China under grant 22105023.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
References
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© 2024 the author(s), published by De Gruyter, Berlin/Boston
This work is licensed under the Creative Commons Attribution 4.0 International License.
Artikel in diesem Heft
- Frontmatter
- New Crystal Structures
- Crystal structure of 3-nitrophenol-2,1,3-benzoselenadiazole (1/1), C12H9N3O3Se
- Crystal structure of diaqua-(hydroxido)-{μ-[2-(hydroxy)-5-[(4-nitrophenyl)diazenyl]benzoato]}-{2-hydroxy-5-[(4-nitrophenyl)diazenyl]benzoato}-(1,10-phenanthroline)-diterbium hydrate, C38H27.4N8O12.2Tb
- Crystal structure of poly[bis(μ3-3-fluoro-4-(1H-1,2,4-triazol-1-yl)benzoato-κ3 O:O′:N)cadmium(II)] – dimethylformamide (1/1), C21H17CdF2N7O5
- The crystal structure of 2-amino-N-(pyridin-2-yl)benzamide, C12H11N3O
- The crystal structure of 2,3-di(pyridin-2-yl)-2,3-dihydroquinazolin-4(1H)-one, C18H14N4O
- Crystal structure of 2-chloro-4-fluorobenzyl (R)-2-(6-methoxynaphthalen-2-yl)propanoate, C21H18ClFO3
- Crystal structure of [1-(4-carboxyphenyl)-4-oxo-1,4-dihydropyridazine-3-carboxylic acid]-(methylsulfinyl)methane, C15H16N2O6S
- The crystal structure of 2-ethyl-1,1-dimethyl-1H-benzo[e]indole, C16H17N
- The crystal structure of (Z)-5-amino-N ′-hydroxy-1H-pyrazole-4-carboximidamide, C4H7N5O
- The crystal structure of 2,2,5-trimethyl-3-(4-(4-(5-phenyl-4,5-dihydroisoxazol-3-yl)thiazol-2-yl)phenyl)imidazolidin-4-one, C24H24N4O2S
- The crystal structure of tetrakis(μ2-acetato-κ2 O:O′)-bis[(4′-phenyl-4,2′:6′,4″-terpyridine-κ1 N)dicopper(II)], C25H21CuN3O4
- Crystal structure of poly(3-thiophenecarboxylato-κ 3 O,O′:O′)-(methanol-κO)cadmium(II), C11H10O5S2Cd
- The crystal structure of dichloridobis[4′-(p-methoxylphenyl)-4,2′:6′,4″-terpyridine-κN] zinc(II), C44H34Cl2N6O2Zn
- The crystal structure of 1-(2-carboxyethyl)-1H-imidazole 3-oxide
- Crystal structure of 1,1′,1″-(nitrilotris(ethane-2,1-diyl))tris(3-(4-(((E)-pyridin-2-ylmethylene)amino)phenyl)urea), C45H47N13O4
- Crystal structure of a (E)-4-bromo-N-(4-(diethylamino)-2-hydroxybenzylidene) benzenaminium acetate ─ 4-bromoaniline (1/1)
- Crystal structure of 2,2′-(iminobis(methylene))bis(benzimidazolium) bis(p-toluenesulfonate), C30H31N5O6S2
- The crystal structure of alogliptinium meta-chlorobenzoate
- Crystal structure of 4-bromobenzyl 2-(6-methoxy-naphthalen-2-yl)propanoate, C21H19BrO3
- The hydrated double salt structure of (E)-4-(2-benzylidenehydrazine-1-carbonyl)pyridin-1-ium cation with 2-hydroxybenzoate and benzoate anions
- Crystal structure of (R)(R)-5-chloro-3-((S,1E,3E)-3,5-dimethyl-hepta-1,3-dien-1-yl)-7-methyl-6,8-dioxo-2,6,7,8-tetrahydroisoquinolin-7-yl acetate, C21H24ClNO4
- The crystal structure of bis(3-oxo-1,3-diphenylprop-1-en-1-olato-κ 2 O:O′)-bis(1,4-dioxane-κ 1 O)nickel(II), C38H38O8Ni
- Crystal structure of poly[aqua-(pyridine-3-carboxylato-κ1 N)(pyridine-3-carboxylato-κ2 O,O′) cadmium(II)] dihydrate, C12H14N2O7Cd
- The crystal structure of 4-(4-phenyl-5-(((1-(2,4,6-tribromophenyl)-1H-1,2,3-triazol-4-yl)methyl)thio)-4H-1,2,4-triazol-3-yl)pyridine, C22H14Br3N7S
- The crystal structure of N-benzylquinoline-2-carbothioamide, C17H14N2S
- Crystal structure of bis(3-isopropylphenyl)-4,4′-bipyridinium dichloride dihydrate, C28H30N2⋅2Cl⋅2H2O
- The crystal structure of ethyl 2-amino-4-(cyanophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate, C19H18N2O4
- Crystal structure of (4R,10S)-6-hydroxy-7-isopropyl-4,10-dimethyl-1,2,3,5-hexahydro-6,10-epoxyazulen-9-one, C15H22O3
- The crystal structure of (E)-(2-(2-hydroxy-3-methoxybenzylidene)aminophenyl)arsonic acid, C14H14AsNO5
- The crystal structure of poly[(μ 2-2-aminoisophthalato-κ4O,O′:O″:O″′)-(N-methylpyrrolidone κ1O)-dioxido-uranium(VI)], C13H14N2O7U
- The crystal structure of the co-crystal isonicotinamide · terephthalic acid, C8H6O4·2(C6H6N2O)
- The crystal structure of (E)-1-phenyl-3-(p-tolylthio)but-2-en-1-one, C17H16OS
- The crystal structure of 4,5-bis((Z)-chloro(hydroxyimino)methyl)-1H-imidazol-3-ium chloride monohydrate
- The crystal structure of 1,2-bis(4-(dimethylamino)phenyl)ethane-1,2-dione. C18H20N2O2
- Crystal structure of 2-chloro-4-fluorobenzyl 2-acetoxybenzoate, C16H12ClFO4
- Crystal structure of methyl 1-phenyl-9H-pyrido[3,4-b]indole-3-carboxylate, C19H14N2O2
- Crystal structure of (3-(dimethoxymethyl)-5-methoxy-1H-indol-1-yl)(5-fluoro-2-iodophenyl)methanone, C19H17FINO4
- Crystal structure of tetrachlorido-bis(1-[(1H-triazole-1-yl)methyl]-1H-benzotriazole-κ2 N:N′)dicopper, C36H32Cu2N24Cl4
- Crystal structure of 2-(2,3-bis(4-methoxyphenyl)-1H-pyrrolo[2,3-b]quinoxalin-1-yl)anilin, C30H24N4O2
- Crystal structure of 5,7-dihydroxy-2-phenyl-4H-chromen-4-one–N,N-dimethylformamide(1/1), C18H17NO5
- The crystal structure of bis(μ 2-biphenyl-2,2′-dicarboxylato)-diaqua-bis(nitrato)-bis(2,2′:6′,2′′-terpyridine)dineodymium(III), C46H32I2N8Nd2O16
- Crystal structure of (Z)-4-amino-N ′-((4-chlorophenyl)(phenyl)methylene)benzohydrazide, C20H16ClN3O
- Crystal structure of (E)-6,8-dimethoxy-4-(4-morpholinobenzylidene)-3,4-dihydro-1-benzoxepin-5(2H)-one, C23H25NO5
- Crystal structure of (R)-2-((3-(3-aminopiperidin-1-yl)-6-methyl-5-oxo-1,2,4-triazin-4(5H)-yl) methyl)-4-fluorobenzonitrile benzoate monohydrate, C24H27FN6O4
- The crystal structure of [triaqua-(8-carboxymethoxy-quinoline-2-carboxylato-κ 3 N,O,O)copper(II)]monohydrate, C12H15NO9Cu
- Crystal structure of (((4-chlorophenyl)sulfonyl)glycinato-κ 2 N,O)bis(1,10-phenanthroline-κ 2 N,N′)cobalt(II) tetrahydrate, C32H30ClCoN5O8S
- Crystal structure of (((3-nitrophenyl)sulfonyl)-β-alaninato-κO)bis(2,2′-bipyridine-κ 2 N, N′)copper(II) 3-nitrobenzenesulfonate, C35H29CuN7O11S2
- Crystal structure of 3-phenoxybenzyl 2-(6-methoxynaphthalen-2-yl)propanoate, C27H24O4
- 6-(2′,3′-Dihydroxy-3′-methylbutyl)-7-methoxy-8-(3″-methylbut-2″-en-1″-yl)-2H-chromen-2-one, C20H26O5
- Crystal structure of bromido-(2,2′:6′,2″-terpyridine-4′-onato-κ3N)palladium(II) methanol solvate
- The crystal structure of ethyl 2-amino-(4-nitrophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate, C20H22N2O6
- Crystal structure of (1E,3E,5E)-1,6-bis(4-(pentyloxy)phenyl)hexa-1,3,5-triene, C28H36O2
- The crystal structure of tris(2-bromo-4-methylphenyl)amine, C21H18Br3N
- The crystal structure of 3-(2,5-dimethylanilino)-1-(2,5-dimethylphenyl)-4-methyl-1H-pyrrole-2,5-dione, C21H22N2O2
- Crystal structure of dicarbonyl (μ2-indole-2-carboxylato κ2 O:O′)tris(triphenylarsine-κAs)dirhodium(I) acetone solvate, C68H56As3NO5Rh2
- The crystal structure of 4-chloro-2-formylphenyl 4-methylbenzenesulfonate, C14H11ClO4S
- Crystal structure of 4-iodobenzyl 2-(6-methoxynaphthalen-2-yl) propanoate, C21H19IO3
Artikel in diesem Heft
- Frontmatter
- New Crystal Structures
- Crystal structure of 3-nitrophenol-2,1,3-benzoselenadiazole (1/1), C12H9N3O3Se
- Crystal structure of diaqua-(hydroxido)-{μ-[2-(hydroxy)-5-[(4-nitrophenyl)diazenyl]benzoato]}-{2-hydroxy-5-[(4-nitrophenyl)diazenyl]benzoato}-(1,10-phenanthroline)-diterbium hydrate, C38H27.4N8O12.2Tb
- Crystal structure of poly[bis(μ3-3-fluoro-4-(1H-1,2,4-triazol-1-yl)benzoato-κ3 O:O′:N)cadmium(II)] – dimethylformamide (1/1), C21H17CdF2N7O5
- The crystal structure of 2-amino-N-(pyridin-2-yl)benzamide, C12H11N3O
- The crystal structure of 2,3-di(pyridin-2-yl)-2,3-dihydroquinazolin-4(1H)-one, C18H14N4O
- Crystal structure of 2-chloro-4-fluorobenzyl (R)-2-(6-methoxynaphthalen-2-yl)propanoate, C21H18ClFO3
- Crystal structure of [1-(4-carboxyphenyl)-4-oxo-1,4-dihydropyridazine-3-carboxylic acid]-(methylsulfinyl)methane, C15H16N2O6S
- The crystal structure of 2-ethyl-1,1-dimethyl-1H-benzo[e]indole, C16H17N
- The crystal structure of (Z)-5-amino-N ′-hydroxy-1H-pyrazole-4-carboximidamide, C4H7N5O
- The crystal structure of 2,2,5-trimethyl-3-(4-(4-(5-phenyl-4,5-dihydroisoxazol-3-yl)thiazol-2-yl)phenyl)imidazolidin-4-one, C24H24N4O2S
- The crystal structure of tetrakis(μ2-acetato-κ2 O:O′)-bis[(4′-phenyl-4,2′:6′,4″-terpyridine-κ1 N)dicopper(II)], C25H21CuN3O4
- Crystal structure of poly(3-thiophenecarboxylato-κ 3 O,O′:O′)-(methanol-κO)cadmium(II), C11H10O5S2Cd
- The crystal structure of dichloridobis[4′-(p-methoxylphenyl)-4,2′:6′,4″-terpyridine-κN] zinc(II), C44H34Cl2N6O2Zn
- The crystal structure of 1-(2-carboxyethyl)-1H-imidazole 3-oxide
- Crystal structure of 1,1′,1″-(nitrilotris(ethane-2,1-diyl))tris(3-(4-(((E)-pyridin-2-ylmethylene)amino)phenyl)urea), C45H47N13O4
- Crystal structure of a (E)-4-bromo-N-(4-(diethylamino)-2-hydroxybenzylidene) benzenaminium acetate ─ 4-bromoaniline (1/1)
- Crystal structure of 2,2′-(iminobis(methylene))bis(benzimidazolium) bis(p-toluenesulfonate), C30H31N5O6S2
- The crystal structure of alogliptinium meta-chlorobenzoate
- Crystal structure of 4-bromobenzyl 2-(6-methoxy-naphthalen-2-yl)propanoate, C21H19BrO3
- The hydrated double salt structure of (E)-4-(2-benzylidenehydrazine-1-carbonyl)pyridin-1-ium cation with 2-hydroxybenzoate and benzoate anions
- Crystal structure of (R)(R)-5-chloro-3-((S,1E,3E)-3,5-dimethyl-hepta-1,3-dien-1-yl)-7-methyl-6,8-dioxo-2,6,7,8-tetrahydroisoquinolin-7-yl acetate, C21H24ClNO4
- The crystal structure of bis(3-oxo-1,3-diphenylprop-1-en-1-olato-κ 2 O:O′)-bis(1,4-dioxane-κ 1 O)nickel(II), C38H38O8Ni
- Crystal structure of poly[aqua-(pyridine-3-carboxylato-κ1 N)(pyridine-3-carboxylato-κ2 O,O′) cadmium(II)] dihydrate, C12H14N2O7Cd
- The crystal structure of 4-(4-phenyl-5-(((1-(2,4,6-tribromophenyl)-1H-1,2,3-triazol-4-yl)methyl)thio)-4H-1,2,4-triazol-3-yl)pyridine, C22H14Br3N7S
- The crystal structure of N-benzylquinoline-2-carbothioamide, C17H14N2S
- Crystal structure of bis(3-isopropylphenyl)-4,4′-bipyridinium dichloride dihydrate, C28H30N2⋅2Cl⋅2H2O
- The crystal structure of ethyl 2-amino-4-(cyanophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate, C19H18N2O4
- Crystal structure of (4R,10S)-6-hydroxy-7-isopropyl-4,10-dimethyl-1,2,3,5-hexahydro-6,10-epoxyazulen-9-one, C15H22O3
- The crystal structure of (E)-(2-(2-hydroxy-3-methoxybenzylidene)aminophenyl)arsonic acid, C14H14AsNO5
- The crystal structure of poly[(μ 2-2-aminoisophthalato-κ4O,O′:O″:O″′)-(N-methylpyrrolidone κ1O)-dioxido-uranium(VI)], C13H14N2O7U
- The crystal structure of the co-crystal isonicotinamide · terephthalic acid, C8H6O4·2(C6H6N2O)
- The crystal structure of (E)-1-phenyl-3-(p-tolylthio)but-2-en-1-one, C17H16OS
- The crystal structure of 4,5-bis((Z)-chloro(hydroxyimino)methyl)-1H-imidazol-3-ium chloride monohydrate
- The crystal structure of 1,2-bis(4-(dimethylamino)phenyl)ethane-1,2-dione. C18H20N2O2
- Crystal structure of 2-chloro-4-fluorobenzyl 2-acetoxybenzoate, C16H12ClFO4
- Crystal structure of methyl 1-phenyl-9H-pyrido[3,4-b]indole-3-carboxylate, C19H14N2O2
- Crystal structure of (3-(dimethoxymethyl)-5-methoxy-1H-indol-1-yl)(5-fluoro-2-iodophenyl)methanone, C19H17FINO4
- Crystal structure of tetrachlorido-bis(1-[(1H-triazole-1-yl)methyl]-1H-benzotriazole-κ2 N:N′)dicopper, C36H32Cu2N24Cl4
- Crystal structure of 2-(2,3-bis(4-methoxyphenyl)-1H-pyrrolo[2,3-b]quinoxalin-1-yl)anilin, C30H24N4O2
- Crystal structure of 5,7-dihydroxy-2-phenyl-4H-chromen-4-one–N,N-dimethylformamide(1/1), C18H17NO5
- The crystal structure of bis(μ 2-biphenyl-2,2′-dicarboxylato)-diaqua-bis(nitrato)-bis(2,2′:6′,2′′-terpyridine)dineodymium(III), C46H32I2N8Nd2O16
- Crystal structure of (Z)-4-amino-N ′-((4-chlorophenyl)(phenyl)methylene)benzohydrazide, C20H16ClN3O
- Crystal structure of (E)-6,8-dimethoxy-4-(4-morpholinobenzylidene)-3,4-dihydro-1-benzoxepin-5(2H)-one, C23H25NO5
- Crystal structure of (R)-2-((3-(3-aminopiperidin-1-yl)-6-methyl-5-oxo-1,2,4-triazin-4(5H)-yl) methyl)-4-fluorobenzonitrile benzoate monohydrate, C24H27FN6O4
- The crystal structure of [triaqua-(8-carboxymethoxy-quinoline-2-carboxylato-κ 3 N,O,O)copper(II)]monohydrate, C12H15NO9Cu
- Crystal structure of (((4-chlorophenyl)sulfonyl)glycinato-κ 2 N,O)bis(1,10-phenanthroline-κ 2 N,N′)cobalt(II) tetrahydrate, C32H30ClCoN5O8S
- Crystal structure of (((3-nitrophenyl)sulfonyl)-β-alaninato-κO)bis(2,2′-bipyridine-κ 2 N, N′)copper(II) 3-nitrobenzenesulfonate, C35H29CuN7O11S2
- Crystal structure of 3-phenoxybenzyl 2-(6-methoxynaphthalen-2-yl)propanoate, C27H24O4
- 6-(2′,3′-Dihydroxy-3′-methylbutyl)-7-methoxy-8-(3″-methylbut-2″-en-1″-yl)-2H-chromen-2-one, C20H26O5
- Crystal structure of bromido-(2,2′:6′,2″-terpyridine-4′-onato-κ3N)palladium(II) methanol solvate
- The crystal structure of ethyl 2-amino-(4-nitrophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate, C20H22N2O6
- Crystal structure of (1E,3E,5E)-1,6-bis(4-(pentyloxy)phenyl)hexa-1,3,5-triene, C28H36O2
- The crystal structure of tris(2-bromo-4-methylphenyl)amine, C21H18Br3N
- The crystal structure of 3-(2,5-dimethylanilino)-1-(2,5-dimethylphenyl)-4-methyl-1H-pyrrole-2,5-dione, C21H22N2O2
- Crystal structure of dicarbonyl (μ2-indole-2-carboxylato κ2 O:O′)tris(triphenylarsine-κAs)dirhodium(I) acetone solvate, C68H56As3NO5Rh2
- The crystal structure of 4-chloro-2-formylphenyl 4-methylbenzenesulfonate, C14H11ClO4S
- Crystal structure of 4-iodobenzyl 2-(6-methoxynaphthalen-2-yl) propanoate, C21H19IO3