Re. Allan et al., FRAGMENTATION OF AN IMIDO TIN(II) CUBANE - SYNTHESES AND STRUCTURES OF HETEROBIMETALLIC COMPLEXES CONTAINING TIN(II) IMIDO AND PHOSPHINIDINE ANIONS, Chemical communications, (13), 1996, pp. 1501-1502
The reactions of the imido tin(II) cubane [SnNBu(t)](4) with 3 equiv.
of [C10H7NHLi] (C10H7 = 1-naphthyl) and 6 equiv. of [C6H11PHLi] (C6H11
= cyclohexyl) produce [Li(thf)(4)](+)[(Bu(t)N)(C10H7N)(3)Sn3Li . thf]
(-). thf . PhMe 1 and [{Sn-2(PC6H11)(3)}Li-2(4) . 4thf]. 2thf 2, respe
ctively, containing the first structurally characterised polyimido and
polyphosphinidine anions of a divalent group 14 metal.