Nucleophilic addition to a Sn(ii) imido cubane, [SnNR]4; a new route to heteroleptic stannates
Abstract
Nucleophilic addition to Sn(II) imido cubanes provides a novel route to heteroleptic stannates, as exemplified by the formation of [{Sn(NHmmp)(OtBu)2}K·thf]2 (2) and [{Sn(MeNCH2CH2NMe)(NHmmp)}Li]∞ (3) from the in situ reactions of the imido Sn(II) cubane [Sn(Nmmp)]4 (1) (mmp = 2-MeO-6-MeC6H3) with tBuOK and [MeN(Li)CH2CH2(Li)NMe]. This pathway demonstrates that Sn(II) imido cubanes can act as synthons for their aza-stannylene constituents, RNSn:.