Synthesis and characterization of a novel tantalum chalcogen-rich molecular cluster with square planar metal core

Maxim N Sokolov; Artyom L Gushchin; Alexandr V Virovets; Eugenia V Peresypkina; Svetlana G Kozlova; Vladimir P Fedin

doi:10.1021/ic0489239

Synthesis and characterization of a novel tantalum chalcogen-rich molecular cluster with square planar metal core

Inorg Chem. 2004 Dec 13;43(25):7966-8. doi: 10.1021/ic0489239.

Authors

Maxim N Sokolov¹, Artyom L Gushchin, Alexandr V Virovets, Eugenia V Peresypkina, Svetlana G Kozlova, Vladimir P Fedin

Affiliation

¹ Nikolayev Institute of Inorganic Chemistry, Russian Academy of Sciences, pr. Lavrentyeva 3, Novosibirsk 630090, Russia. [email protected]

PMID: 15578832
DOI: 10.1021/ic0489239

Abstract

Black single crystals of Ta(4)Se(9)I(8) are obtained in a high yield by heating Ta, Se, and I(2) at 300 degrees C in 1:2.2:1.0 molar ratio. In the structure, the tantalum atoms form a square, with four Se(2) ligands bridging the Ta-Ta edges and one capping the square. Each Ta atom has two terminal iodine atoms. The compound is diamagnetic and has only two electrons for metal-metal bonding.