scholarly journals 2,6-Bis(4-methoxybenzylidene)cyclohexanone

2006 ◽  
Vol 62 (5) ◽  
pp. o1910-o1912 ◽  
Author(s):  
Ray J. Butcher ◽  
H. S. Yathirajan ◽  
B. K. Sarojini ◽  
B. Narayana ◽  
J. Indira
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Photon Absorption ◽  
Intermolecular Hydrogen Bonds ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Compound C ◽  
Centrosymmetric Dimers

The title compound, C22H22O3, demonstrates a two-photon absorption. Its metrical parameters are similar to those of related cyclohexanone derivatives. In the crystal structure, two sets of centrosymmetric dimers formed by weak C—H...O intermolecular hydrogen bonds combine to form molecular tapes along [101].

scholarly journals Crystal structure ofO-ethylN-(ethoxycarbonyl)thiocarbamate

2015 ◽  
Vol 71 (10) ◽  
pp. o782-o783 ◽  
Author(s):  
Matthew J. Henley ◽  
Alex M. Schrader ◽  
Victor G. Young ◽  
George Barany
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Least Squares ◽  
Title Compound ◽  
Compound C ◽  
The One ◽  
Related Compounds ◽  
Centrosymmetric Dimers

The title compound, C6H11NO3S, provides entries to novel carbamoyl disulfanes and related compounds of interest to our laboratory. The atoms of the central O(C=S)N(C=O)O fragment have an r.m.s. deviation of 0.1077 Å from the respective least-squares plane. While several conformational orientations are conceivable, the crystal structure shows only the one in which the carbonyl and the thiocarbonyl moieties areantito each other across the central conjugated C—N—C moiety. Pairs of 2.54 Å N—H...S=C hydrogen bonds between adjacent molecules form centrosymmetric dimers in the crystal.

(E)-4-[3-Ethoxy-4-(2-phenoxyethoxy)benzylideneamino]-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one

2006 ◽  
Vol 62 (7) ◽  
pp. o2963-o2964
Author(s):  
Wen-Jun Zhang ◽  
Zhong-Yu Duan ◽  
Xin Zhao
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Dihedral Angles ◽  
Ring Plane ◽  
Compound C ◽  
Phenyl Rings ◽  
Centrosymmetric Dimers

The title compound, C28H29N3O4, was prepared by the reaction of 4-amino-1,5-dimethyl-2-phenylpyrazol-3-one and 3-ethoxy-4-(2-phenoxyethoxy)benzaldehyde. The vanillin group makes dihedral angles of 73.08 (8) and 66.54 (6)° with the planes of the two terminal phenyl rings, and an angle of 30.49 (6)° with the pyrazolone ring plane. The crystal structure is stabilized by intermolecular C—H...O hydrogen bonds that form centrosymmetric dimers.

1-(4-Chlorophenyl)-4-(2-furoyl)-3-(2-furyl)-1H-pyrazol-5-ol

2007 ◽  
Vol 63 (3) ◽  
pp. o1289-o1290 ◽  
Author(s):  
Jin-Zhou Li ◽  
Heng-Qiang Zhang ◽  
Hong-Xin Li ◽  
Pi-Zhi Che ◽  
Tian-Chi Wang
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Intermolecular Hydrogen Bond ◽  
Hydroxyl Groups ◽  
Intermolecular Hydrogen Bonds ◽  
Compound C ◽  
Graph Set

The crystal structure of the title compound, C18H11ClN2O4, contains intra- and intermolecular hydrogen bonds that link the ketone and hydroxyl groups. The intermolecular hydrogen bond results in the formation of a dimer with an R 2 2(12) graph-set motif.

2,5-Dibromopyridinium hexabromidostannate(IV)

2007 ◽  
Vol 63 (3) ◽  
pp. m892-m894 ◽  
Author(s):  
Basem Fares Ali ◽  
Rawhi Al-Far
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Rotation Axis ◽  
Supramolecular Architecture ◽  
Asymmetric Unit ◽  
Intermolecular Hydrogen Bonds ◽  
Compound C ◽  
Distorted Octahedral

The asymmetric unit of the title compound, (C5H4Br2N)2[SnBr6], contains one cation and one half-anion. The anion exhibits a distorted octahedral arrangement about the Sn atom, which lies on a crystallographic twofold rotation axis. In the crystal structure, intermolecular hydrogen bonds and short Br...Br interactions cause the formation of a supramolecular architecture, in which they may be effective in the stabilization of the structure.

scholarly journals Crystal structure of diethyl 3,3′-[(2-fluorophenyl)methylidene]bis(1H-indole-2-carboxylate)

2017 ◽  
Vol 73 (11) ◽  
pp. 1790-1792 ◽  
Author(s):  
Xin-Hua Lu ◽  
Hong-Shun Sun ◽  
Yuan Cai ◽  
Lu-Lu Chen ◽  
Yang-Feng Chen
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Indole Ring ◽  
Ring Systems ◽  
Compound C ◽  
The Mean ◽  
Supramolecular Chains ◽  
Centrosymmetric Dimers

In the title compound, C29H25FN2O4, the mean planes of the two indole ring systems (r.m.s. deviations = 0.1392 and 0.0115 Å) are approximately perpendicular to one another, subtending a dihedral angle of 86.0 (5)°; the benzene ring is twisted with respect to the mean planes of the two indole ring systems by 83.3 (2) and 88.1 (4)°, respectively. In the crystal, pairs of N—H...O hydrogen bonds link the molecules into centrosymmetric dimers, which are further linked by N—H...O hydrogen bonds into supramolecular chains propagating along the [101] direction.

Ornidazole hemihydrate

2007 ◽  
Vol 63 (11) ◽  
pp. o4204-o4204 ◽  
Author(s):  
Liping Deng ◽  
Wei Wang ◽  
Jianguo Lv
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Water Molecules ◽  
Asymmetric Unit ◽  
Intermolecular Hydrogen Bonds ◽  
Compound C ◽  
Independent Molecules

The asymmetric unit of the racemic title compound, C7H10ClN3O3·0.5H2O, has two independent molecules of ornidazole. The crystal structure is formed via intermolecular hydrogen bonds involving the water molecules.

scholarly journals Crystal structure of 3-bromo-2-hydroxybenzoic acid

2015 ◽  
Vol 71 (5) ◽  
pp. 531-535 ◽  
Author(s):  
Gerhard Laus ◽  
Volker Kahlenberg ◽  
Thomas Gelbrich ◽  
Sven Nerdinger ◽  
Herwig Schottenberger
Keyword(s):  
Crystal Structure ◽  
Salicylic Acid ◽  
Hydrogen Bonds ◽  
Crystal Structures ◽  
Title Compound ◽  
Hydroxybenzoic Acid ◽  
Compound C ◽  
Derivatives Of ◽  
Centrosymmetric Dimers ◽  
Ring Motif

Mutual carboxyl–carboxyl O—H...O hydrogen bonds link the molecules of the title compound, C7H5BrO3, into centrosymmetric dimers which display a centralR22(8) ring motif. In addition, there is an intramolecular hydroxyl–carboxyl O—H...O interaction present. A comparison with the crystal structures of 59 other substituted derivatives of salicylic acid shows that both the centrosymmetric carboxyl–carboxyl O—H...O dimer and the stacking mode of molecules along the shortaaxis observed in the title structure are frequent packing motifs in this set.

3,5-Bis(salicylideneamino)-1H-1,2,4-triazole methanol solvate

2006 ◽  
Vol 62 (4) ◽  
pp. o1424-o1425
Author(s):  
Ru-Mei Cheng ◽  
Yi-Zhi Li ◽  
Sheng-Ju Ou ◽  
Xue-Tai Chen
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Grid Structure ◽  
Intermolecular Hydrogen Bonds ◽  
Compound C ◽  
Ribbon Structure

In the crystal structure of the title compound, C16H13N5O2·CH4O, there are intra- and intermolecular hydrogen bonds. Molecules form dimers, which are extended to afford a ribbon structure. These ribbons are further packed, forming a three-dimensional grid structure.

3-(5-Chloro-2-hydroxyanilino)isobenzofuran-1(3H)-one

2007 ◽  
Vol 63 (11) ◽  
pp. o4343-o4343
Author(s):  
Mustafa Odabaşoğlu ◽  
Orhan Büyükgüngör
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Intermolecular Hydrogen Bonds ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance

The crystal structure of the title compound, C14H10ClNO3, is stabilized by inversion-related O—H...O and C—H...O intermolecular hydrogen bonds and also by C—H...π and π–π interactions (centroid-to-centroid distance 3.681 Å and plane-to plane separation 3.618 Å). The O—H...O and C—H...O hydrogen bonds generate edge-fused R 2 1(6)R 4 4(27)R 2 1(6) ring motifs. The phthalide part of the molecule is planar and is inclined at 76.8 (2)° to the benzene ring of the aminophenyl group.

(3aR,4R,4aS,9aR)-4-Hydroxyperhydrofuro[2,3-f]indolizin-7(2H)-one

2007 ◽  
Vol 63 (3) ◽  
pp. o1452-o1454 ◽  
Author(s):  
Ľubomír Švorc ◽  
Viktor Vrábel ◽  
Jozef Kožíšek ◽  
Štefan Marchalín ◽  
Jozefína Žúžiová
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Chair Conformation ◽  
Membered Ring ◽  
Intermolecular Hydrogen Bonds ◽  
Compound C

In the title compound, C10H15NO3, the central six-membered ring has a chair conformation. The conformations of the fused furan and oxopyrrolidine rings are close to envelopes. Molecules form chains parallel to the a axis via O—H...O intermolecular hydrogen bonds, which help to stabilize the crystal structure.

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