Abstract
The asymmetric unit of the title compound, [Cd2(C12H10N2)3(C6H12NOS2)4]·4C2H3N, comprises a Cd(II) atom, two di-thio-carbamate (dtc) anions, one and a half trans-1,2-dipyridin-4-yl-ethyl-ene (bpe) mol-ecules and two aceto-nitrile solvent mol-ecules. The full binuclear complex is generated by the application of a centre of inversion. The dtc ligands are chelating, one bpe mol-ecule coordinates in a monodentate mode while the other is bidentate bridging. The resulting cis-N2S4 coordination geometry is based on an octa-hedron. Supra-molecular layers, sustained by hy-droxy-O-H⋯O(hy-droxy) and hy-droxy-O-H⋯N(bpe) hydrogen bonding, inter-penetrate to form a three-dimensional architecture; voids in this arrangement are occupied by the aceto-nitrile solvent mol-ecules. Additional inter-molecular inter-actions falling within the specified framework have been analysed by Hirshfeld surface analysis, including π-π inter-actions.
Highlights
The asymmetric unit of the title compound, [Cd2(C12H10N2)3(C6H12NOS2)4]Á4C2H3N, comprises a CdII atom, two dithiocarbamate anions, one and a half trans-1,2-dipyridin-4-ylethylene molecules and two acetonitrile solvent molecules
Each CdII atom is coordinated by two dithiocarbamate ligands and two nitrogen atoms, one derived from a monodentate trans-1,2-dipyridin-4-ylethylene ligand and another from one end of a bidentate, bridging bpe ligand
These ladders are connected into layers parallel to (101) via hydroxy-O—HÁ Á ÁN(bpe) hydrogen bonds where the nitrogen atom is derived from the monodentate bpe ligand
Summary
The recent disclosure of one-dimensional, supramolecular isomers of {Cd[S2CN(iPr)CH2CH2OH]2}n notwithstanding (Tan et al, 2013, 2016), the overwhelming majority of binary bis(dialkyldithiocarbamato) compounds of cadmium are usually binuclear with a coordination number of five owing to the presence of equal numbers of chelating and 2-tridentate ligands, i.e. are of general formula [Cd(S2CNR2)2]2 (Tiekink, 2003; Tan et al, 2016). The distortions from the ideal geometry are readily related to the restricted bite angles of the chelating ligands, Table 1. Both bpe ligands exhibit twists as seen in the values of
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