Step-wise nucleophilic substitution of bis(cyclopentadienyl)-tin(II); synthesis and structural characterisation of [{Sn(η3-C5H5)[µ-NC(NMe2)2]}2] and [{Sn[S(CH2)3SC(R)][µ-NC(NMe2)2]}2](R = H or SiMe3)
Abstract
Nucleophilic substitution of Sn(C5H5)2 with LiNC(NMe2)2 led to the monosubstitution of only one C5H5 ligand yielding dimeric [{Sn(η3-C5H5)[µ-NC(NMe2)2]}2] in which the remaining C5H5 group can be further substituted by reactions with lithiated 1,3-dithianes to give the dimeric mixed-ligand imino–1,3-dithiane complexes [{Sn[[graphic omitted](R)][µ-NC(NMe2)2]}2](R = H or SiMe3).