Carbon-carbon coupling reactions of but-2-yne on a triruthenium framework:sythesis and molecular structure of Ru_3(CO)_7[NS(0)MePh](HCMeCMeCMeCMeCO) and Ru_3(CO)_8(CMeCMeCMeCMe)

摘要

The cluster Ru_3(CO)_9[NS(0)MePh] (1) reacts with two equivalents of MeCident to in tetrahydrofuran at 60deg C to give the dienonyl derivative Ru_3(CO)_7[NS(0)MePh](HCMeCMeCMeCMeCO) and Ru_3(CO)_8(CMeCMeCMeCMe) (2),along with an isomer mixture of Ru_3(CO)_8[NS(0)MePh](HCMeCMe)(3).At 100deg C,the same reaction gives rise to the formation of the diendiyl cluster Ru_3(CO)_8(CMeCMeCMeCMe)(4).The single-crystal structure analyses reveal for 2 a closed Ru_3 skeleton and for 4 an open Ru_3 framework.