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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\overline{1}]. Weak inter­molecular C—H...O and C—H...Cl hydrogen bonds are also observed.

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In the title complex, [Ni(C7H14N4OS)2]Cl2, the 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 groups. Two chloride ions complete the asymmetric unit. In the crystal, mol­ecules are linked through N—H...Cl and O—H...Cl hydrogen bonds into an infinite chain propagating along [101].

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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\overline{1}] are formed via pairs of O—H...S and N—H...S hydrogen bonds. The chains are further stabilized by C—H...S interactions.

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The title compound, C15H11FN4OS, crystallizes with three independent mol­ecules (A, B and C) in the asymmetric unit. The dihedral angles between the nine-membered 5-fluoro­indolin-2-one ring system and the benzene ring are 22.14 (11), 12.56 (11) and 3.70 (11)° in mol­ecules A, B and C, respectively. In all three mol­ecules, intra­molecular cyclic N—H...O and C—H...S hydrogen-bonding inter­actions [graph set S(6)] are present in the N—N—C—N chain between the ring systems. In the crystal, the A mol­ecules form centrosymmetric cyclic dimers through inter­molecular N—H...O hydrogen bonds, which are linked into a supramolecular chain along [100] via C—H...F interactions; each type of hydrogen bond has graph set graph set R22(8). A similar chain stabilised by similar interactions and also along [100] but, comprising alternating molecules of B and C is found. The latter chains are connected via C—H...S interactions, forming a layer with a zigzag topology parallel to (001).

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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.

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In the title compound, C10H9N5O3S, an intra­molecular N—H...O hydrogen bond generates an S(6) ring motif. In the crystal, mol­ecules are linked via N—H...S hydrogen bonds into a zigzag chain along the b axis. C—H...O inter­actions are observed between the chains.

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In the title compound, C11H12N4OS, an intra­molecular N—H...O hydrogen bond generates an S(6) ring motif. In the crystal, the mol­ecules form a helical chain along the a axis through an N—H...O hydrogen bond. These chains are extended by an N—H...S hydrogen bond and a C—H...π inter­action into a three-dimensional network.

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In the title compound, C15H12N4OS, the dihedral angle between the nine-membered indolin-2-one ring system and the phenyl ring is 2.72 (7)°. Intra­molecular cyclic N—H...O and C—H...S hydrogen-bonding inter­actions [graph set S(6)] are present, as are weak N—H...N inter­actions [graph set S(5)]. In the crystal, mol­ecules form centrosymmetric cyclic dimers through pairs of N—H...O hydrogen bonds [graph set R22(8)] and these are extended by C—H...S inter­actions. The crystal structure also features weak C—H...π inter­actions.

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In the title compound, C10H9ClN4OS, an intra­molecular N—H...O hydrogen-bonding inter­action and an N—H...N inter­action generate ring motifs [graph sets S(6) and S(5), respectively]. In the crystal, mol­ecules form a chain through N—H...O hydrogen bonds, and these are extended by N—H...S hydrogen-bonding inter­actions into an infinite three-dimensional network. The crystal structure also exhibits weak C—H...π inter­actions.

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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].

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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.
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