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1.  Bis{2-[3-(hy­droxy­imino-κN)butan-2-yl­idene]-N-methyl­hydrazinecarbothio­amide-κ2 N 2,S}nickel(II) dichloride 
The asymmetric unit of the title compound, [Ni(C6H12N4OS)2]Cl2, contains two independent NiII complex cations and four chloride anions. Each NiII ion is six-coordinated in a distorted octa­hedral geometry by four N atoms from the two imine and two oxime groups and two S atoms from the thione group. In the crystal, the cations and anions are linked through N—H⋯Cl and O—H⋯Cl hydrogen bonds into infinite chains propagating along [10]. Weak inter­molecular C—H⋯O and C—H⋯Cl hydrogen bonds are also observed.
PMCID: PMC3274853  PMID: 22346800
2.  (E)-N-Ethyl-2-[(E)-3-(hy­droxy­imino)­butan-2-yl­idene]hydrazinecarbothio­amide 
In the crystal structure of the title compound, C7H14N4OS, mol­ecules are linked through N—H⋯S and O—H⋯N hydrogen bonds and C—H⋯S interactions, forming chains propagating along [21-1].
PMCID: PMC3414996  PMID: 22904983
3.  (E)-2-[(E)-3-(Hy­droxy­imino)­butan-2-yl­idene]-N-methyl­hydrazinecarbothio­amide 
In the title compound, C6H12N4OS, an intra­molecular N—H⋯N hydrogen-bond is present giving rise to an S(5) ring motif. In the crystal, double-stranded chains propagating along [10] are formed via pairs of O—H⋯S and N—H⋯S hydrogen bonds. The chains are further stabilized by C—H⋯S interactions.
PMCID: PMC3254522  PMID: 22259468
4.  N′-[3-(Hy­droxy­imino)­butan-2-yl­idene]-4-methyl­benzene-1-sulfono­hydrazide 
In the title compound, C11H15N3O3S, the C—S—N(H)—N linkage is nonplanar, the torsion angle being 75.70 (12)°. The compound has two almost planar fragments linked to the S atom: the hydrazone-derivative fragment [(HONC4H6)N—N(H)–] and the tolyl fragment (C7H7–) have maximum deviations from the mean plane through the non-H atoms of 0.0260 (10) and 0.0148 (14) Å, respectively. The two planar fragments make an inter­planar angle of 79.47 (5)°. In the crystal, mol­ecules are connected through inversion centers via pairs of N—H⋯O and O—H⋯N hydrogen bonds.
PMCID: PMC3297317  PMID: 22412507
5.  2-(1,2,3,4-Tetra­hydro­naphthalen-1-yl­idene)hydrazinecarbothio­amide 
The mol­ecular structure of the title compound, C11H13N3S, is not planar: the maximum deviation from the mean plane of the non-H atoms is 0.521 (2) Å for an aliphatic C atom, which corresponds to an envelope conformation for the non-aromatic ring. The hydrazinecarbothio­amide substituent and the benzene ring have maximum deviations from the mean planes through the non-H atoms of 0.0288 (16) and 0.0124 (27) Å, respectively, and the dihedral angle between the two planes is 8.84 (13)°. In the crystal, mol­ecules are linked into chains along [10] by pairs of N—H⋯S hydrogen bonds between mol­ecules related by centres of symmetry.
PMCID: PMC3415020  PMID: 22905007
6.  A second monoclinic polymorph of 2-(3,5-dimethyl-1H-pyrazol-1-yl)-2-hy­droxy­imino-N′-[1-(pyridin-2-yl)ethyl­idene]acetohydrazide 
The title compound, C14H16N6O2, is a second monoclinic polymorph of 2-[1-(3,5-dimeth­yl)pyrazol­yl]-2-hy­droxy­imino-N′-[1-(2-pyrid­yl)ethyl­idene] acetohydrazide, with two crystallographically independent mol­ecules per asymmetric unit. The non-planar mol­ecules are chemically equal having similar geometric parameters. The previously reported polymorph [Plutenko et al. (2012 ▶). Acta Cryst. E68, o3281] was described in space group Cc (Z = 4). The oxime group and the O atom of the amide group are anti with respect to the C—C bond. In the crystal, mol­ecules are connected by N—H⋯N hydrogen bonds into zigzag chains extending along the b axis.
PMCID: PMC3648291  PMID: 23723911
7.  Diammine{N-[2-(hy­droxy­imino)­propion­yl]-N′-[2-(oxidoimino)­propion­yl]propane-1,3-diaminido-κ4 N,N′,N′′,N′′′}iron(III) 
In the title compound, [Fe(C9H13N4O4)(NH3)2], the FeIII atom, lying on a mirror plane, is coordinated by four N atoms of a triply deprotonated tetra­dentate N-[2-(hy­droxy­imino)­propion­yl]-N′-[2-(oxidoimino)­propion­yl]propane-1,3-diaminide ligand in the equatorial plane and two N atoms of two ammonia mol­ecules at the axial positions in a distorted octa­hedral geometry. A short intra­molecular O—H⋯O hydrogen bond between the cis-disposed oxime O atoms stabilizes the pseudo-macrocyclic configuration of the ligand. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds into a three-dimensional network. The ligand has a mirror-plane symmetry. One of the methyl­ene groups of the propane bridge is disordered over two sets of sites with equal occupancy factors.
PMCID: PMC3588803  PMID: 23468768
8.  Crystal structure of 2-hy­droxy­imino-2-(pyridin-2-yl)-N′-[1-(pyridin-2-yl)ethyl­idene]acetohydrazide 
The mol­ecule of the title compound is approximately planar with the planes of the two pyridine rings inclined to one another by 5.51 (7)°. In the crystal, mol­ecules are linked by bifurcated O—H⋯(O,N) hydrogen bonds, forming inversion dimers, which are in turn linked via C—H⋯O and C—H⋯N hydrogen bonds, forming sheets lying parallel to (502).
The mol­ecule of the title compound, C14H13N5O2, is approximately planar (r.m.s deviation for all non-H atoms = 0.093 Å), with the planes of the two pyridine rings inclined to one another by 5.51 (7)°. The oxime group is syn to the amide group, probably due to the formation of an intra­molecular N—H⋯N hydrogen bond that forms an S(6) ring motif. In the crystal, mol­ecules are linked by pairs of bifurcated O—H⋯(O,N) hydrogen bonds, forming inversion dimers. The latter are linked via C—H⋯O and C—H⋯N hydrogen bonds, forming sheets lying parallel to (502). The sheets are linked via π–π stacking inter­actions [inter-centroid distance = 3.7588 (9) Å], involving the pyridine rings of inversion-related mol­ecules, forming a three-dimensional structure.
PMCID: PMC4257442  PMID: 25552998
crystal structure; hy­droxy­imino; acetohydrazide; pyridyl­ethyl­idene; hydrogen bonding; π–π stacking inter­actions
9.  Bis­{(E)-3-[2-(hy­droxy­imino)­propan­amido]-2,2-dimethyl­propan-1-aminium} bis[μ-(E)-N-(3-amino-2,2-dimethyl­prop­yl)-2-(hy­droxy­imino)­propanamido­(2−)]bis­{[(E)-N-(3-amino-2,2-dimethyl­prop­yl)-2-(hy­droxy­imino)­propanamide]­copper(II)} bis­((E)-{3-[2-(hy­droxy­imino)­propanamido]-2,2-dimethyl­prop­yl}carbamate) acetonitrile disolvate 
The reaction between copper(II) nitrate and (E)-N-(3-amino-2,2-dimethyl­prop­yl)-2-(hy­droxy­imino)­propanamide led to the formation of the dinuclear centrosymmetric copper(II) title complex, (C8H18N3O2)2[Cu2(C8H15N3O2)2(C8H17N3O2)2](C9H16N3O4)2·2CH3CN, in which an inversion center is located at the midpoint of the Cu2 unit in the center of the neutral [Cu2(C8H15N3O2)2(C8H17N3O2)2] complex fragment. The Cu2+ ions are connected by two N—O bridging groups [Cu⋯Cu separation = 4.0608 (5) Å] while the CuII ions are five-coordinated in a square-pyramidal N4O coordination environment. The complex mol­ecule co-crystallizes with two mol­ecules of acetonitrile, two mol­ecules of the protonated ligand (E)-3-[2-(hy­droxy­imino)­propanamido]-2,2-dimethyl­propan-1-aminium and two negatively charged (E)-{3-[2-(hy­droxy­imino)­propanamido]-2,2-dimethyl­prop­yl}carbamate anions, which were probably formed as a result of condensation between (E)-N-(3-amino-2,2-dimethyl­prop­yl)-2-(hy­droxy­imino)­propanamide and hydro­gencarbonate anions. In the crystal, the complex fragment [Cu2(C8H15N3O2)2(C8H17N3O2)2] and the ion pair C8H18N3O2 +.C9H16N3O4 − are connected via an extended system of hydrogen bonds.
PMCID: PMC3588739  PMID: 23468704
10.  Diaquabis­[3-(hydroxy­imino­)butanoato]nickel(II): a triclinic polymorph 
The title centrosymmetric mononuclear complex, [Ni(C4H6NO3)2(H2O)2], is a polymorph of the previously reported complex [Dudarenko et al. (2010 ▶). Acta Cryst. E66, m277–m278]. The NiII atom, lying on an inversion center, is six-coordinated by two carboxyl­ate O atoms and two oxime N atoms from two trans-disposed chelating 3-hydroxy­imino­butanoate ligands and two axial water mol­ecules in a distorted octa­hedral geometry. The hydr­oxy group forms an intra­molecular hydrogen bond with the coordinated carboxyl­ate O atom. The complex mol­ecules are linked in stacks along [010] by a hydrogen bond between the water O atom and the carboxyl­ate O atom of a neighboring mol­ecule. The stacks are further linked by O—H⋯O hydrogen bonds into a layer parallel to (001).
PMCID: PMC2983669  PMID: 21580256
11.  (Z)-N-Ethyl-2-(5-fluoro-2-oxoindolin-3-yl­idene)hydrazinecarbothio­amide 
In the title compound, C11H11FN4OS, an intra­molecular N—H⋯O hydrogen bond generates an S(6) ring. In the crystal, mol­ecules form chains through N—H⋯O hydrogen bonds, which are extended by N—H⋯S hydrogen bonds into an infinite three-dimensional network.
PMCID: PMC3470224  PMID: 23125668
12.  (2E)-N-Methyl-2-[(2E)-3-phenyl­prop-2-en-1-yl­idene]hydrazinecarbothio­amide 
The title compound, C11H13N3S, is close to being planar, with a dihedral angle of 9.64 (3)° between the benzene ring and the thio­semicarbazone mean plane, maintained by the presence of π-conjugation in the chain linking the the two systems. In the crystal, N—H⋯S hydrogen bonds form centrosymmetric dimers through a cyclic association [graph-set R 2 2(8)].
PMCID: PMC3470202  PMID: 23125646
13.  Bis(2-carb­oxy-N-{[1-(2-hy­droxy­eth­yl)-3,3-dimethyl­indolin-2-yl­idene]methyl­imino}­anilinium) sulfate monohydrate 
The asymmetric unit of the title compound, 2C20H22N3O3 +·SO4 2−·H2O, contains four cations, two sulfate anions and two lattice water mol­ecules. One of the four cations shows a different conformation of the hy­droxy­ethyl group; the remaining three are all essentially superimposable. Two cations exhibit two-site orientational disorder [ratios = 0.524 (5):0.476 (5) and 0.616 (6):0.384 (6)] of the last two atoms of their hy­droxy­ethyl groups, and one water mol­ecule is disordered over two positions in a 0.634 (13):0.366 (13) ratio. Each imine H atom is intra­molecularly in contact with the adjacent carboxyl O atom, forming an S(6) motif, while all the carb­oxy­lic acid H atoms are hydrogen bonded to O atoms of the sulfate anions. Other notable hydrogen-bond inter­actions involve (methyl­ene, phenyl and imine chain) C—H⋯O (sulfate and carbox­yl) and O—H⋯O(water) contacts, making up a comprehensive three-dimensional network involving D 2 2(n), with n = 4–6 and 15–16, and C 2 2(17) classical hydrogen-bond motifs. The crystal investigated was twinned by pseudomerohedry with a twin component ratio of 0.4745 (12):0.5255 (12).
PMCID: PMC3588437  PMID: 23476537
14.  N-Ethyl-2-[1-(2-hy­droxy-6-meth­oxy­phenyl)ethyl­idene]hydrazinecarbothio­amide 
In the title compound, C12H17N3O2S, the dihedral angle between the mean planes of the hydrazinecarbothio­amide group and the benzene ring is 86.8 (4)°. In the crystal, inter­molecular O—H⋯S hydrogen bonds link the mol­ecules into chains along [001]. The crystal studied was an inversion twin, the refined ratio of the twin components being 0.98021 (3):0.01978 (7).
PMCID: PMC3470346  PMID: 23125759
15.  Diaquabis­[3-(hydroxy­imino)­butanoato]nickel(II) 
In the neutral, mononuclear title complex, [Ni(C4H6NO3)2(H2O)2], the Ni atom lies on a crystallographic inversion centre within a distorted octa­hedral N2O4 environment. Two trans-disposed anions of 3-hydroxy­imino­butanoic acid occupy four equatorial sites, coordinated by the deprotonated carboxyl­ate and protonated oxime groups and forming six-membered chelate rings, while the two axial positions are occupied by the water O atoms. The O atom of the oxime group forms an intra­molecular hydrogen bond with the coordinated carboxyl­ate O atom. The complex mol­ecules are linked into chains along b by hydrogen bonds between the water O atom and the carboxyl­ate O of a neighbouring mol­ecule. The chains are linked by further hydrogen bonds into a layer structure.
PMCID: PMC2983569  PMID: 21580224
16.  2-Hydroxy­imino-N′-[1-(2-pyrid­yl)ethyl­idene]propanohydrazide 
The title compound, C10H12N4O2, features an intra­molecular N—H⋯N hydrogen bond formed between the imine NH and oxime N atoms. The oxime group and the amide C=O bond are anti to each other. In the crystal, mol­ecules are connected by O—H⋯O hydrogen bonds into supra­molecular zigzag chains along the c axis.
PMCID: PMC2969988  PMID: 21577640
17.  Bis{4-bromo-2-[(2-hy­droxy­eth­yl)imino­meth­yl]phenolato}nickel(II) monohydrate 
The title mononuclear nickel complex, [Ni(C9H9BrNO2)2]·H2O, was obtained by the reaction of 5-bromo­salicyl­aldehyde, 2-amino­ethanol and nickel nitrate in methanol. The NiII atom is six-coordinated by two phenolate O, two imine N and two hy­droxy O atoms from two crystallographically different Schiff base ligands, forming an octa­hedral geometry. In the crystal, mol­ecules are linked by inter­molecular O—H⋯O and O—H⋯Br hydrogen bonds, forming a three-dimensional network.
PMCID: PMC3200792  PMID: 22058854
18.  (Z)-N,N-Dimethyl-2-[phen­yl(pyridin-2-yl)methyl­idene]hydrazinecarbothio­amide 
The title compound, C15H16N4S, exists in the Z conformation with the thionyl S atom lying cis to the azomethine N atom. The shortening of the N—N distance [1.3697 (17) Å] is due to extensive delocalization with the pyridine ring. The hydrazine–carbothio­amide unit is almost planar, with a maximum deviation of 0.013 (2) Å for the amide N atom. The stability of this conformation is favoured by the formation of an intra­molecular N—H⋯N hydrogen bond. The packing of the mol­ecules involves no classical inter­molecular hydrogen-bonding inter­actions; however, a C—H⋯π inter­action occurs.
PMCID: PMC3238862  PMID: 22199715
19.  N′-(2-Hy­droxy­benzyl­idene)-2-(hy­droxy­imino)­propano­hydrazide 
The mol­ecule of the title compound, C10H11N3O3, adopts an all-trans conformation and is approxomately planar, the largest deviation from the least-squares plane through all non-H atoms being 0.261 (1) Å. An intra­molecular O—H⋯N hydrogen bond occurs. In the crystal, the mol­ecules are packed into layers lying parallel to the ab plane by π-stacking inter­actions between the benzene ring of one molecule and the C—N bond of the oxime group of another molecule; the shortest inter­molecular C⋯C separation within the layer is 3.412 (1) Å. The layers are connected by O—H⋯O and N—H⋯O hydrogen bonds.
PMCID: PMC3238939  PMID: 22199788
20.  1-(2-Hy­droxy­eth­yl)-4-[3-(2-trifluoro­methyl-9H-thioxanthen-9-yl­idene)prop­yl]piperazine-1,4-diium dichloride: the dihydro­chloride salt of flupentixol 
In the title compound, C23H27F3N2OS+·2Cl−, the piperazinediium ring adopts a chair conformation. The dihedral angle between the two outer aromatic rings of the 9H-thioxanthene unit is 40.35 (18)°. The F atoms in the trifluoro­methyl group are disordered over two sets of sites with occupancies of 0.803 (6) and 0.197 (6). In the crystal, mol­ecules are connected by N—H⋯Cl, O—H⋯Cl C—H⋯O and C—H⋯Cl hydrogen bonds, forming chains propagating along [001]. There are also C—H⋯π inter­actions present in the crystal structure.
PMCID: PMC3213522  PMID: 22091101
21.  Bis[2-(2-oxoindolin-3-yl­idene)-N-phenylhydrazinecarbothio­amidato-κ3 O,N 2,S]nickel(II) dimethyl­formamide monosolvate 
The asymmetric unit of the title compound, [Ni(C15H11N4OS)2]·C3H7NO, contains one NiII complex mol­ecule and one disordered dimethyl­formamide solvent mol­ecule. The NiII ion is six-coordinated in a distorted octa­hedral geometry by two N, two O and two S atoms. An intra­molecular C—H⋯S hydrogen bond generates an S(6) ring motif. In the crystal, mol­ecules are linked through inter­molecular N—H⋯S, N—H⋯O, C—H⋯N, C—H⋯O and C—H⋯S hydrogen bonds into infinite two-dimensional network parallel to the ab plane. The structure is further stablized by weak C—H⋯π inter­actions. The dimethylformamide solvent molecule is disordered over two sets of sites in a 0.514 (15):0.486 (15) ratio.
PMCID: PMC3344298  PMID: 22590064
22.  (E)-2-[1-(3-Chloro-4-fluoro­phen­yl)ethyl­idene]hydrazinecarbothio­amide 
In the crystal of the title compound, C9H9ClFN3S, the molecules are inter­connected by N—H⋯S and N—H⋯F hydrogen bonds. There are two different N—H⋯S hydrogen bond: the stronger one links mol­ecules into infinite chains along the b axis with graph-set motif C(4), while the weaker N—H⋯S hydrogen bond combines with the previous one into an R 2 2(8) network. Moreover, the chains are linked into layers parallel to (102) by weak N—H⋯F hydrogen bonds, which form an R 2 2(22) ring motif. In addition, there are also weak π–π inter­actions between the benzene rings of adjacent mol­ecules [centroid–centroid distance = 3.8997 (15) Å].
PMCID: PMC3050128  PMID: 21522787
23.  (E)-2-[1-(1-Benzothio­phen-3-yl)ethyl­idene]hydrazinecarbothio­amide methanol hemisolvate 
The asymmetric unit of the title compound, C11H11N3S2·0.5CH4O, contains four thio­semicarbazone mol­ecules and two methanol solvent mol­ecules. Each hydrazinecarbothio­amide mol­ecule adopts an E configuration with respect to the C=N double bond and is stabilized by an intra­molecular N—H⋯N hydrogen bond, resulting in an S(5) ring motif. In the crystal structure, an extensive network of N—H⋯O, N—H⋯N, O—H⋯S and N—H⋯S hydrogen bonds and weak C—H⋯O, C—H⋯N and C—H⋯S contacts together with an S⋯S [3.5958 (14) Å] and a C—H⋯π inter­action form a three-dimensional network.
PMCID: PMC2961618  PMID: 21202547
24.  Dichlorido{2-hydroxy­imino-N′-[1-(2-pyrid­yl)ethyl­idene]propanohydrazide-κ3 N,N′,O}zinc(II) hemihydrate 
The title compound, [ZnCl2(C10H12N4O2)]·0.5H2O, was readily prepared by the reaction between ZnCl2 and 2-hydroxy­imino-N′-[1-(2-pyrid­yl)ethyl­idene]propanohydrazide. The Zn atom has a distorted trigonal–bipyramidal geometry with two Cl atoms and one azomethine N atom in the equatorial plane and one pyridine N atom and one amide O atom in the axial positions. In the crystal structure, complex mol­ecules are connected in pairs by N—H⋯Cl hydrogen bonds, formed between the amide NH of one mol­ecule and the Cl atom of a neighboring one. Mol­ecular pairs are connected by hydrogen bonds involving the uncoordinated water mol­ecule, which lies on a twofold axis.
PMCID: PMC2960173  PMID: 21201313
25.  Poly[[[diaqua­cobalt(II)]-bis­[μ2-1,1′-(butane-1,4-di­yl)diimidazole-κ2 N 3:N 3′]] dichloride tetra­hydrate] 
In the title compound, {[Co(C10H14N4)2(H2O)2]Cl2·4H2O}n, the CoII atom and the mid-point of the 1,1′-butane-1,4-diyl­diimidazole ligands lie on inversion centers. The CoII atom is six-coordinated in a slightly distorted octa­hedral environment by four N atoms from four different ligands and by two O atoms from the water mol­ecules. The CoII atoms are bridged by the ligands into a (4,4) net. Adjacent nets are linked to the chloride anions and uncoordinated water mol­ecules via O—H⋯Cl and O—H⋯O hydrogen bonds, generating a three-dimensional supra­molecular structure.
PMCID: PMC2968895  PMID: 21582325

Results 1-25 (505516)