Crystal structure of tetra-kis-[?2-2-(di-methyl-amino)-ethano-lato-?(3) N,O:O]di-?3-hydroxido-di-thio-cyanato-?(2) N-dichromium(III)dilead(II) di-thio-cyanate aceto-nitrile monosolvate.

ABSTRACT: The tetra-nuclear complex cation of the title compound, [Cr2Pb2(NCS)2(OH)2(C4H10NO)4](SCN)2·CH3CN, lies on an inversion centre. The main structural feature of the cation is a distorted seco-norcubane Pb2Cr2O6 cage with a central four-membered Cr2O2 ring. The Cr(III) ion is coordinated in a distorted octa-hedron, which involves two N atoms of one bidentate ligand and one thio-cyanate anion, two ?2-O atoms of 2-(di-methyl-amino)-ethano-late ligands and two ?3-O atoms of hydroxide ions. The coordination geometry of the Pb(II) ion is a distorted disphenoid, which involves one N atom, two ?2-O atoms and one ?3-O atom. In addition, weak Pb?S inter-actions involving the coordinating and non-coordinating thio-cyanate anions are observed. In the crystal, the complex cations are linked through the thio-cyanate anions via the Pb?S inter-actions and O-H?N hydrogen bonds into chains along the c axis. The chains are further linked together via S?S contacts. The contribution of the disordered solvent aceto-nitrile mol-ecule was removed with the SQUEEZE [Spek (2015 ?). Acta Cryst. C71, 9-18] procedure in PLATON. The solvent is included in the reported mol-ecular formula, weight and density.

SUBMITTER: Rusanova JA 

PROVIDER: S-EPMC4910341 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature