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1.  (E)-N′-[4-(Methyl­sulfan­yl)benzyl­idene]furan-2-carbohydrazide monohydrate 
In the title compound, C13H12N2O2S·H2O, the dihedral angle between the aromatic rings is 35.34 (19)° and an intra­molecular N—H⋯O hydrogen bond generates an S(5) ring. In the crystal, mol­ecules are linked by N—H⋯O and O—H⋯O hydrogen bonds, generating (001) sheets.
doi:10.1107/S1600536810028655
PMCID: PMC3007322  PMID: 21588441
2.  N′-(3,4-Dimethyl­benzyl­idene)furan-2-carbohydrazide 
The title compound, C14H14N2O2, was prepared by the reaction of 3,4-dimethyl­benzaldehyde and furan-2-carbohydrazide. The dihedral angle between the aromatic rings is 35.48 (14)°. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds, generating C(4) chains propagating in [010].
doi:10.1107/S1600536810027959
PMCID: PMC3007564  PMID: 21588365
3.  N′-(4-Hy­droxy­benzyl­idene)thio­phene-2-carbohydrazide 
In the title compound, C12H10N2O2S, the dihedral angle between the benzene and thio­phene rings is 23.34 (16)°. In the crystal structure, mol­ecules are linked by N—H⋯O and O—H⋯O hydrogen bonds, forming (100) sheets.
doi:10.1107/S1600536810021483
PMCID: PMC3006717  PMID: 21587936
4.  4-Ethyl-1-[4-(methyl­sulfan­yl)benzyl­idene]thio­semicarbazide 
There are four independent mol­ecules in the asymmetric unit of the title compound, C11H15N3S2, with different conformations: the dihedral angles between the benzene rings and thio­urea units are 16.85 (9), 0.56 (10), 8.05 (12) and 4.56 (8)°. Each mol­ecule contains an intra­molecular N—H⋯N hydrogen bond, generating an S(5) ring. The crystal structure is stabilized by inter­molecular N—H⋯S hydrogen bonds.
doi:10.1107/S1600536810022920
PMCID: PMC3006876  PMID: 21587932
5.  N′-Benzyl­idene­furan-2-carbohydrazide 
In the title compound, C12H10N2O2, the dihedral angle between the benzene ring and the furan ring is 24.6 (2)°. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds, generating C(4) chains propagating in [010].
doi:10.1107/S1600536810021471
PMCID: PMC3006900  PMID: 21587937
6.  4-Ethyl-1-(4-meth­oxy­benzyl­idene)thio­semicarbazide 
In the title compound, C11H15N3OS, the dihedral angle between the aromatic ring and the thio­urea unit is 4.28 (7)° and an intra­molecular N—H⋯N hydrogen bond generates an S(5) ring. In the crystal, mol­ecules are linked into (001) sheets by N—H⋯S hydrogen bonds.
doi:10.1107/S1600536810022919
PMCID: PMC3007044  PMID: 21587931
7.  N′-(4-Cyano­benzyl­idene)furan-2-carbohydrazide monohydrate 
In the title compound, C13H9N3O2·H2O, the dihedral angle between the aromatic rings is 10.7 (4)° and an intra­molecular N—H⋯O hydrogen bond occurs. In the crystal, the components are linked by N—H⋯O, O—H⋯N and O—H⋯O hydrogen bonds.
doi:10.1107/S1600536810022221
PMCID: PMC3006838  PMID: 21587896
8.  1-[3-(2-Nitro­phen­yl)-5-phenyl-2-pyrazolin-1-yl]ethanone 
The title compound, C17H15N3O3, was prepared from 1-(2-nitro­phen­yl)-3-phenyl­prop-2-en-1-one and hydrazine. The dihedral angle between the benzene and phenyl rings is 74.55 (2)°. The pyrazoline ring is in a slight envelope conformation with the C atom bonded to the phenyl ring forming the flap. In the crystal structure, weak inter­molecular C—H⋯O hydrogen bonds connect mol­ecules into chains along [100].
doi:10.1107/S1600536810020611
PMCID: PMC3006741  PMID: 21587827
9.  Ethyl 3-(4-methyl­benzyl­idene)carbazate 
There are two mol­ecules in the asymmetric unit of the title compound, C11H14N2O2, which have similar conformations. In the crystal, the mol­ecules are linked by N—H⋯O hydrogen bonds, generating C(4) chains propagating in [001].
doi:10.1107/S1600536810020623
PMCID: PMC3006752  PMID: 21587808
10.  N′-(4-Cyano­benzyl­idene)thio­phene-2-carbohydrazide 
The title compound, C13H9N3OS, was prepared by the reaction of thio­phene-2-carbohydrazide and 4-formyl­benzonitrile. The dihedral angle between the benzene and thio­phene rings is 11.9 (1)°. In the crystal structure, mol­ecules are linked into centrosymmetric dimers by pairs of N—H⋯O hydrogen bonds.
doi:10.1107/S1600536810019215
PMCID: PMC2979571  PMID: 21579539
11.  Tetra­imidazole­bis(trichloro­acetato)copper(II) 
The title compound, [Cu(C2Cl3O2)2(C3H4N2)4], was prepared by the reaction of imidazole and trichloro­acetatocopper(II). The CuII atom adopts a distorted octa­hedral coordination geometry, binding the N atoms of four imidazole ligands and the carboxyl­ate O atoms of two trichloro­acetate anions. The mol­ecular structure and packing are stabilized by N—H⋯O hydrogen-bonding inter­actions. Close inter­molecular Cl⋯Cl contacts [3.498 (3) Å] are also found in the structure.
doi:10.1107/S1600536810017459
PMCID: PMC2979359  PMID: 21579322
12.  4-Ethyl-1-(4-methyl­benzyl­idene)thio­semicarbazide 
In the title compound, C11H15N3S, an intra­molecular N—H⋯N hydrogen bond generates an S(5) ring. In the crystal, inversion dimers linked by pairs of N—H⋯S bonds occur, generating an R 2 2(8) loop.
doi:10.1107/S1600536810017988
PMCID: PMC2979434  PMID: 21579478
13.  (E)-N′-(4-Methoxy­benzyl­idene)thio­phene-2-carbohydrazide 
In the title compound, C13H12N2O2S, the dihedral angle between the aromatic rings is 15.20 (11)°. In the crystal, inversion dimers linked by pairs of N—H⋯O hydrogen bonds generate R 2 2(8) loops.
doi:10.1107/S1600536810017836
PMCID: PMC2979446  PMID: 21579479
14.  N′-(4-Methyl­benzyl­idene)thio­phene-2-carbohydrazide 
In the title compound, C13H12N2OS, the dihedral angle between the aromatic rings is 14.84 (17)°. In the crystal, inversion dimers linked by pairs of N—H⋯O hydrogen bonds generate R 2 2(8) loops.
doi:10.1107/S1600536810017976
PMCID: PMC2979519  PMID: 21579477
15.  Methyl 3-(4-methyl­benzyl­idene)carbazate 
The title compound, C10H12N2O2, was prepared by the reaction of methyl carbazate and 4-methyl­benzaldehyde. The dihedral angle between the benzene ring and the carbazate fragment is 20.86 (10)°. In the crystal structure, mol­ecules are linked by inter­molecular N—H⋯O hydrogen bonds.
doi:10.1107/S160053681001799X
PMCID: PMC2979553  PMID: 21579505
16.  1-[4-(Dimethyl­amino)benzyl­idene]-4-methyl­thio­semicarbazide 
In the title compound, C11H16N4S, an intra­molecular N—H⋯N hydrogen bond generates an S(5) ring. In the crystal, inversion dimers linked by pairs of N—H⋯S bonds occur, generating an R 2 2(8) loop.
doi:10.1107/S1600536810018386
PMCID: PMC2979619  PMID: 21579476
17.  4-[Bis(3,4-dimethoxy­phen­yl)meth­yl]pyridine ethanol monosolvate 
In the title compound, C22H23NO4·C2H6O, the pyridyl ring is aligned at 89.39 (2) and 87.41 (2)° with respect to the benzene rings, and the three rings connected to the methine C atom are arranged in a propeller-like conformation. The heterocycle is linked to the solvent mol­ecule by an O—H⋯N hydrogen bond.
doi:10.1107/S1600536810017460
PMCID: PMC2979484  PMID: 21579459
18.  N′-(2-Fluoro­benzyl­idene)acetohydrazide 
The title compound, C9H9FN2O, was prepared by the reaction between 2-fluoro­benzophenone and acetohydrazide. In the crystal structure, inversion dimers linked by pairs of N—H⋯O hydrogen bonds occur, generating R 2 2(8) loops.
doi:10.1107/S1600536810010627
PMCID: PMC2984006  PMID: 21580737
19.  5,6-Diphenyl-3-(3-pyrid­yl)-1,2,4-triazine 
In the mol­ecule of the title compound, C20H14N4, the triazine ring is attached to two phenyl rings and one pyridine ring. In the crystal, mol­ecules are linked by inter­molecular C—H⋯N hydrogen bonds. The crystal packing is also stabilized by C—H⋯π inter­actions.
doi:10.1107/S1600536810002187
PMCID: PMC2979911  PMID: 21579842
20.  Bis(2,2′-bipyrid­yl)(dichloro­acetato)copper(II) dichloro­acetate dihydrate 
In the title compound, [Cu(C2HCl2O2)(C10H8N2)2](C2HCl2O2)·2H2O, the CuII ion is bonded to two N,N′-bidentate 2,2′-bipyridyl ligands and one O-monodentate 2,2-dichloro­acetate anion in a distorted CuON4 trigonal-bipyramidal geometry, with the O atom occupying an equatorial site. In the crystal, the components are linked by O—H⋯O and O—H⋯Cl hydrogen bonds.
doi:10.1107/S1600536809055640
PMCID: PMC2979737  PMID: 21579622
21.  2,7-Dibromo-9,9-bis­[(pyridin-1-ium-4-yl)meth­yl]fluorene dinitrate 
In the title compound, C25H20Br2N2 2+·2NO3 −, the cation lies on a twofold rotation axis which imposes disorder of the dibromo­fluorene unit. In addition, the unique nitrate anion is disordered over two general sites of equal occupancy. The crystal structure is stabilized by inter­molecular N—H⋯O hydrogen bonds.
doi:10.1107/S1600536809054828
PMCID: PMC2979851  PMID: 21579696
22.  {μ2-1,4-Bis[2-(4-pyrid­yl)ethen­yl]benzene-κ2 N:N′}bis­[bis­(acetyl­acetonato-κ2 O,O′)copper(II)] 
The asymmetric unit of the title compound, [Cu2(C5H7O2)4(C20H16N2)], contains half of a centrosymmetric dinuclear mol­ecule. In the mol­ecule, each Cu center is coordinated by four O atoms from two acetyl­acetonate ligands and one N atom from the bridging linear 1,4-bis­[2-(4-pyrid­yl)ethen­yl]benzene ligand in a square-pyramidal geometry. In the crystal structure, weak inter­molecular C—H⋯O hydrogen bonds link mol­ecules into sheets parallel to the bc plane.
doi:10.1107/S1600536809048582
PMCID: PMC2971849  PMID: 21578648
23.  N′-(1-Phenyl­ethyl­idene)isonicotinohydrazide 
The title compound, C14H13N3O, was prepared from hypnone and isoniazid. The dihedral angle between the aromatic rings is 12.21 (2)°. In the crystal, N—H⋯O hydrogen bonds link the mol­ecules into chains propagating in [001] and C—H⋯O inter­actions consolidate the packing.
doi:10.1107/S1600536809048569
PMCID: PMC2972171  PMID: 21578848
24.  3-(4-Methoxy­phen­yl)-1-(2-nitrophen­yl)prop-2-en-1-one 
The title compound, C16H13NO4, was prepared from 2-nitrylhypnone [systematic name: 1-(2-nitrophenyl)ethanone] and 4-methoxy­benzophenone by a Claisen–Schmidt condensation. The dihedral angle formed by the two benzene rings is 80.73 (2). The crystal packing is stabilized by inter­molecular C—H⋯O hydrogen bonds.
doi:10.1107/S1600536809048120
PMCID: PMC2971945  PMID: 21578842
25.  Benzimidazolium 2-(2,4-dichloro­phen­oxy)acetate monohydrate 
In the crystal of the title hydrated mol­ecular salt, C7H7N2 +·C8H5Cl2O3·H2O, the components inter­act by way of N—H⋯O and O—H⋯O hydrogen bonds, leading to chains propagating in [100].
doi:10.1107/S1600536809045899
PMCID: PMC2972003  PMID: 21578777

Results 1-25 (83)