Crystal structure of S-octyl (E)-3-(4-meth-oxy-benzyl-idene)di-thio-carbazate

Crystal structure of S-n-octyl 3-(1-phenyl-ethyl-idene)di-thio-carbazate and of its bis-chelated nickel(II) complex

The nitro-gen-sulfur Schiff base proligand S-n-octyl 3-(1-phenyl-ethyl-idene)di-thio-carbazate, C17H26N2S2 (HL), was prepared by reaction of S-octyl di-thio-carbamate with aceto-phenone. Treatment of HL with nickel acetate yielded the complex bis-[S-n-octyl 3-(1-phenyl-ethyl-idene)di-thio-carbazato]nickel(II), [Ni(C17H25N2S2)2] (NiL 2), which was shown to adopt a tetra-hedrally distorted cis-square-planar coordination geometry, with the NiSN planes of the two ligands forming a dihedral angle of 21.66 (6)°. Changes in the geometry of the L ligand upon chelation of Ni2+ are described, involving a ca 180° rotation around the N(azomethine)-C(thiol-ate) bond.

(E)-{[(Butyl-sulfan-yl)methane-thio-yl]amino}(4-meth-oxy-benzyl-idene)amine: crystal structure and Hirshfeld surface analysis

The title hydrazine carbodi-thio-ate, C13H18N2OS2, is constructed about a central and almost planar C2N2S2 chromophore (r.m.s. deviation = 0.0263 Å); the terminal meth-oxy-benzene group is close to coplanar with this plane [dihedral angle = 3.92 (11)°]. The n-butyl group has an extended all-trans conformation [torsion angles S-Cm-Cm-Cm = -173.2 (3)° and Cm-Cm-Cm-Cme = 180.0 (4)°; m = methyl-ene and me = meth-yl]. The most prominent feature of the mol-ecular packing is the formation of centrosymmetric eight-membered {⋯HNCS}2 synthons, as a result of thio-amide-N-H⋯S(thio-amide) hydrogen bonds; these are linked via meth-oxy-C-H⋯π(meth-oxy-benzene) inter-actions to form a linear supra-molecular chain propagating along the a-axis direction. An analysis of the calculated Hirshfeld surfaces and two-dimensional fingerprint plots point to the significance of H⋯H (58.4%), S⋯H/H⋯S (17.1%), C⋯H/H⋯C (8.2%) and O⋯H/H⋯O (4.9%) contacts in the packing. The energies of the most significant inter-actions, i.e. the N-H⋯S and C-H⋯π inter-actions have their most significant contributions from electrostatic and dispersive components, respectively. The energies of two other identified close contacts at close to van der Waals distances, i.e. a thione-sulfur and meth-oxy-benzene-hydrogen contact (occurring within the chains along the a axis) and between methyl-ene-H atoms (occurring between chains to consolidate the three-dimensional architecture), are largely dispersive in nature.

Bis[S-octyl 3-(4-methoxybenzylidene)dithiocarbazato-κ2 N 3,S]nickel(II)

The nickel(II) cation of the title complex, [Ni(C17H25N2OS2)2], is located on a crystallographic inversion centre. It has a square-planar coordination geometry, with a trans configuration of the N,S-chelating ligands, as imposed by the crystal symmetry.

Bis[S-hexyl 3-(thiophen-2-ylmethylidene)dithiocarbazato-κ2N3,S]palladium(II)

In the title complex, [Pd(C12H17N2S3)2], the PdIIatom exhibits a square-planar coordination geometry with theN,S-chelating ligands arranged in atransconfiguration. Intramolecular C—H...S hydrogen bonds are observed. In the crystal, molecules are linked by weak C—H...N hydrogen-bond interactions, forming chains parallel to thebaxis.

Crystal structure of S-hexyl (E)-3-(2-hy-droxy-benzyl-idene)di-thio-carbazate

The title compound, C14H20N2OS2 [systematic name: S-hexyl (E)-2-(2-hy-droxy-benzyl-idene)hydrazine-1-carbodi-thio-ate], crystallizes with four independent mol-ecules (A-D) in the asymmetric unit. All four mol-ecules adopt an E conformation with respect to the C=N bond of the benzyl-idene moiety and have an intra-molecular O-H⋯N hydrogen bond generating an S(6) ring motif. In the crystal, the A and D mol-ecules are connected by a pair N-H⋯S hydrogen bonds, forming a dimer with an R 2 (2)(8) ring motif. In the case of mol-ecules B and C, they are linked to themselves by pairs of N-H⋯S hydrogen bonds, forming B-B and C-C inversion dimers with R 2 (2)(8) ring motifs.