Synthesis, Structure, and Reactivity of 1,2-(1',1',2',2'-Tetramethyldisilane-1',2')carborane.
The novel strained compound 1,2-(1',1',2',2'-tetramethyldisilane-1',2')carborane (1) was synthesized by the reaction of 1,2-dilithiocarborane and dichlorotetramethyldisilane. Compound 1 was characterized by solution methods and its structure determined by single-crystal X-ray diffraction. In contrast to its organic analogue o-(disilanyl)phenylene, the reaction of 1 with ethanol leads to cleavage of a Si-C bond rather than a Si-Si bond. Similarly to other cyclic disilanes, exposure of a solution of 1 to oxygen leads to the insertion of an oxygen atom into the Si-Si bond. The structure of the oxygen inserted product was also determined by X-ray crystallography. The general chemistry and attempts at polymerizing 1 are briefly discussed.
de Rege
Francis M.
FM
Los Alamos National Laboratory, Chemical Science and Technology Division, CST-11, Mail Stop J514, Los Alamos, New Mexico 87545, and United States Air Force Academy, Department of Chemistry, Chemistry Research Center, Colorado Springs, Colorado 80840-6230.
Kassebaum
Jeremy D.
JD
Scott
Brian L.
BL
Abney
Kent D.
KD
Balaich
Gary J.
GJ