Synthesis and structures of a 3-sila-β-diketiminatomagnesium bromide, ketenimide and triflate†
Abstract
The crystalline compounds [Mg(Br)(L)(thf)]·0.5Et2O [L = {N(R)C(C6H3Me2-2,6)}2SiR, R = SiMe3]
(1), [Mg(L){NCC(C(Me)CH)2CH2}(D)2]
[D = NCC6H3Me2-2,6 (2), thf (3)] and [{Mg(L)}2{μ-OSO(CF3)O-μ}2]
(4) were prepared from (a) Si(Br)(R){C(C6H3Me2-2,6)NR}2 and Mg for (1), (b)
[Mg(SiR3)2(thf)2] and 2,6-Me2C6H3CN (5 mol for (2), 3 mol for (3)), and (c)
(2)
+ Me3SiOS(O)2CF3 for (4); a coproduct from (c) is believed to have been the