The C(10)H(8)N(3)S(2) portion of the title mol-ecule, C(17)H(15)N(3)S(3), is nearly planar (r.m.s. deviation 0.05 Å); this unit and the phenyl ring subtend an angle of 114.5 (2)° at the methyl-ene C atom.
In the title compound, [Ni(C(17)H(14)N(3)S(2))(2)]·2C(3)H(7)NO, the Ni atom (site symmetry ) is N,S-chelated by two deprotonated Schiff base anions in a distorted square-planar geometry. The dihedral angle between the aromatic ring planes within the ligand is 86.37 (13)°. In the crystal structure, an N-H⋯O hydrogen bond links the complex to the dimethyl-formamide solvent mol-ecule.
In the title compound, C(18)H(17)N(3)S(2), the dihedral angle between the planes of the aromatic ring systems is 83.63 (16)°. In the crystal structure, inversion dimers occur, linked by pairs of N-H⋯S hydrogen bonds.
The Schiff base mol-ecule of the title compound, C(15)H(14)N(2)O(4)·C(3)H(7)NO, adopts a trans configuration with respect to the C=N double bond; the Schiff base itself is nearly planar (r.m.s. deviation 0.20 Å). The amido N atom is a hydrogen-bond donor to the dimethyl-formamide solvate mol-ecule. One of the hydr-oxy groups forms an intra-molecular hydrogen bond to the N atom of the C=N double bond, whereas the other forms an inter-molecular hydrogen bond to the carbonyl group.
The asymmetric unit of the title compound, C(26)H(25)N(3)O(2)S(2), contains two independent mol-ecules, which are linked by a pair of N-H⋯S hydrogen bonds, forming a dimer.
In the crystal of the title compound, C(17)H(15)N(3)S(2)·0.5C(2)H(6)O, the mol-ecules are linked by a pair of N-H(aliphatic)⋯S hydrogen bonds across a center of inversion, forming a dimer. The ethanol solvent mol-ecule, which is statistically disordered about a crystallographic twofold rotation axis, accepts an N-H(aromatic)⋯O hydrogen bond; the hydr-oxy group of the solvent mol-ecule is not engaged in hydrogen bonding.
The two aromatic parts of the title mol-ecule, C(16)H(12)BrN(3)O(4), are connected through a conjugated -CH=N-NH-C(O)- fragment to furnish an almost planar mol-ecule. Adjacent mol-ecules are linked by N-H⋯O and O-H⋯O hydrogen bonds into a three-dimensional network. An intramolecular O-H⋯O link also occurs.
The Schiff base mol-ecule of the title compound, C(15)H(14)N(2)O(4)·H(2)O, adopts a trans configuration with respect to the C=N double bond; the Schiff base itself is almost planar (r.m.s. deviation for all non-H atoms = 0.040 Å). The amido N atom is the hydrogen-bond donor to the water mol-ecule, which is the hydrogen-bond donor to the hydr-oxy groups of two neighboring mol-ecules. One of the hydroxyl groups acts as an intra-molecular and the other as an inter-molecular hydrogen-bond donor.
The two aromatic parts of the title compound, C(16)H(13)ClN(3)O(4), are connected through a conjugated -CH=N-NH-C(O)- fragment, giving an almost planar mol-ecule (r.m.s. deviation 0.08 Å). In the crystal structure, adjacent mol-ecules are linked by N-H⋯O and O-H⋯O hydrogen bonds into a three-dimensional network.
The pyridine-coordinated Cu(II) atom in the title Schiff base complex, [Cu(C(15)H(11)N(3)O(5))(C(5)H(5)N)], is O,N,O'-chelated by the doubly deprotonated Schiff base ligand. The metal centre is in a square-planar coordination geometry.
The N'-(1-methyl-1H-indol-3-ylmethyl-idene)hydrazine-carbo-dithio-ate portion of the title mol-ecule, C(18)H(17)N(3)S(2), is nearly planar; this unit and the phenyl ring subtend an angle of 112.9 (2)° at the methyl-ene C atom.
The two aromatic parts of the title compound, C(16)H(13)N(3)O(4)·5H(2)O, are connected through a conjugated -CH=N-NH-C(O)- fragment, giving an almost planar mol-ecule. The organic mol-ecules and uncoordinated water mol-ecules are linked by N-H⋯O and O-H⋯O hydrogen bonds into a three-dimensional network.
The metal atom in the title compound, [Cd(C(15)H(13)N(2)O(4))(2)]·2C(2)H(6)OS, is twice O,N,O'-chelated by two symmetry-related Schiff base ligands to define a trans-N(2)O(4) octa-hedral geometry. Each anion occupies meridional sites of the octa-hedron; the metal atom lies on a special position of site symmetry 2. The dimethyl sulfoxide mol-ecule is a hydrogen-bond acceptor to the -NH- unit, and O-H⋯O hydrogen bonds link mol-ecules into a supra-molecular chain.
Each of the two independent mol-ecules of the title comound, C(14)H(20)N(2)O(3), exists in the zwitterionic form as the imino N atoms are protonated. The =N-H unit forms an intra-molecular hydrogen bond to the negatively charged O atom, and also a weaker intermolecular N-H⋯O bond, the latter resulting in inversion dimers.
In the structure of [Cu(C(17)H(14)N(3)S(2))(2)]·2C(3)H(7)NO, the Cu atom (site symmetry ) is N,S-chelated by the two deprotonated Schiff-base anions that define a distorted square-planar geometry. An N-H⋯O hydrogen bond links the mononuclear complex to the DMF solvent mol-ecules.
The title compound, [Sn(C(6)H(5))(3)(C(17)H(25)O(3)S)](n), comprises two symmetry-independent five-coordinated triphenyl-tin mol-ecules which are linked by carboxyl-ate bridges into a polymeric chain. The Sn(IV) atom is in a distorted trans-C(3)SnO(2) trigonal-bipyramidal geometry. The presence of two bulky tert-butyl groups on the benzene ring prevents any hydrogen-bonding inter-actions involving the hydroxyl substituents.
The asymmetric unit of the crystal structure of the title compound, [Ni(C(14)H(19)N(2)O(3))(2)], contains two independent Ni(II) complex mol-ecules, with the metal atoms each located on a center of inversion. Each metal atom is chelated by two Schiff base anions in a distorted square-planar coordination environment.
The Sn(IV) atom in the title compound, [Sn(CH(3))(2)(C(18)H(11)ClN(2)O(3))], shows a trans-C(2)NO(2)Sn trigonal-bipyramidal coordin-ation; the axial O-Sn-O angle is 155.22 (5)°. The tridentate N'-(5-chloro-2-oxidobenzyl-idene)-3-hydr-oxy-2-naphthohydrazidate dianion is stabilized by an intra-molecular O-H⋯N hydrogen bond.
The Cu(II) atom in the title compound, [Cu(C(13)H(16)ClN(2)O(2))Cl], exists in a distorted square-planar coordination environment as the deprotonated Schiff base chelates to the Cu(II) atom through three atom sites. In the crystal structure, adjacent mol-ecules are linked by a Cu⋯Cl [3.011 (1) Å] bridge, generating a linear chain running along the b axis of the ortho-rhom-bic unit cell.
In the title compound, (C(7)H(11)N(2))(2)[SnBr(4)(C(7)H(7))(2)], the tetra-bromidobis(4-methyl-phen-yl)stannate(IV) anion possesses a centre of inversion located at the Sn(IV) atom. In the crystal structure, two inversion-related cations are linked to the anion via weak N-H⋯Br hydrogen bonds.