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The Crystal and Molecular Structure of (µ-Oxo)bis{chloro(methyl)thienyl- tellurium(IV)}

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The Crystal and Molecular Structure of ( µ -Oxo)bis{chloro(methyl)thienyl- tellurium(IV)}

Raija Oilunkaniemi*

,a

, Risto S. Laitinen

a

, and Markku Ahlgre´n

b

a Department of Chemistry, P. O. Box 3000, FIN-90014 University of Oulu, Finland

b Department of Chemistry, University of Joensuu, P. O. Box 111, FIN-80101 Joensuu, Finland

* Reprint requests to Dr. Raija Oilunkaniemi.

Tel. +368-8-553-1686. Fax. +358-8-553-1608.

E-mail: Raija.Oilunkaniemi@oulu.fi Z. Naturforsch.56b,215Ð217 (2001);

received October 26, 2000

Methyl Thienyl Telluride, Tellurium(IV)

The formation and the crystal and molecular structure of (µ-oxo)bis{chloro(methyl)thienyl- tellurium(IV)}, [Me(Th)TeCl]2O, are described.

The compound is orthorhombic, space group Pbcn,a= 1893.30(2),b= 891.96(2),c= 966.24(5) pm;Z= 4. The tellurium atom shows trigonal bi- pyramidal coordination with chlorine and the bridging oxygen atoms in axial, and methyl and thienyl groups in equatorial positions. The two close intermolecular Te(1) ··· Cl(1) contacts ex- pand the coordination sphere around tellurium to an almost regular octahedron.

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