Diisothiocyanato[di(2-pyridyl)methanediol]copper(II) bis(dimethyl sulfoxide), [Cu(NCS)(2)(dpydiol)]center dot 2DMSO

The crystal and molecular structure of green [Cu(NCS)(2)(C11H10N2O2)].2(CH3 )(2)SO, which forms a distinct dimer in the crystalline state, was determin ed. The stereochemistry of the monomer is a distorted five-coordinate squar e pyramidal arrangement of four N atoms and a displaced fifth ligand positi on occupied by an oxygen of a hydroxy group of the gem-diol ligand. Two of the nitrogen ligands are N-bonded thiocyanates and the other two N atoms ar e furnished by the di(2-pyridyl)methanediol ligand. The copper to nitrogen distances are 1.935 (4), 1.942 (4) Angstrom for the two thiocyanates and 2. 025 (3), 2.032 (3) Angstrom for the di(2-pyridyl)methanediol ligand. The co pper to oxygen distance is 2.475 (3) Angstrom and the copper to sulfur dist ance in the dimer is 3.1394 (17) Angstrom.