Synthesis and characterization of a novel tantalum chalcogen-rich molecular cluster with square planar metal core.
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.
Sokolov
Maxim N
MN
Nikolayev Institute of Inorganic Chemistry, Russian Academy of Sciences, pr. Lavrentyeva 3, Novosibirsk 630090, Russia. caesar@che.nsk.su
Gushchin
Artyom L
AL
Virovets
Alexandr V
AV
Peresypkina
Eugenia V
EV
Kozlova
Svetlana G
SG
Fedin
Vladimir P
VP