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Structural Study of a Binuclear Zinc Complex of 2,6-Diacetylpyridine Bis{N(4)-dimethylthiosemicarbazone}, [Zn(2,6Ac4DM)]

2

· MeCN Elena Labisbal

a

, Alfonso Casti˜neiras

a

, Christine A. Brown

b

, and Douglas X. West

b

aDepartamento de Qu´ımica Inorg´anica, Universidade de Santiago de Compostela, E-15706 Santiago de Compostela, Galicia, Spain

bDepartment of Chemistry, Illinois State University, Normal, IL-61790-4160, USA

Reprint requests to Dr. E. Labisbal. Fax: +34-81-547163. E-mail: qilabis@correo.lugo.usc.es Z. Naturforsch.56 b,229–232 (2001); received December 4, 2000

Zinc, 2,6-Diacetylpyridine BisfN(4)-dimethylthiosemicarbazoneg, Electrochemical Synthesis Zinc metal was oxidized in the presence of 2,6-diacetylpyridine bisfN(4)-dimethylthiosemi- carbazoneg (2,6H2Ac4DM) in an acetonitrile solution, to produce a complex of the formula [Zn(2,6Ac4DM)]2CH3CN. One of the zinc atoms is distorted octahedrally 6-coordinate and the coordination involves both pyridyl nitrogen atoms of the two ligands, the imine nitrogen atom and the thiolato sulfur atom of one thiosemicarbazone moiety of each ligand. The other zinc center is distorted tetrahedrally 4-coordinate with NS coordination of the two remaining thiosemicarbazone moieties. The complex crystallizes in the monoclinic space group C2/c with a = 14.952(2), b = 17.656(3), c = 15.553(4) ˚A,= 111.456(16), V = 3821.5(13) ˚A3and Z = 4.

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