Evidence for a zwitterionic transition state in double bond rotations within tungsten-vinyl complexes.
نویسندگان
چکیده
The trianionic pincer supported tungsten-vinyl complex [CF3-ONO]W(O){(CH3)3CC[double bond, length as m-dash]C(CH3)2} (3syn) undergoes facile double bond rotation at ambient temperature. The degenerate methyl exchange rates were measured via selective inversion-recovery experiments. DFT computations in conjunction with experimentally determined rate constants support a double bond rotation that proceeds via a Zwiterionic transition state.
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ورودعنوان ژورنال:
- Chemical communications
دوره 51 69 شماره
صفحات -
تاریخ انتشار 2015