209398-22-1Relevant academic research and scientific papers
Stannylation experiments with NH-functional aminoiminophosphoranes. Synthesis and structure of the tricyclic stannaphosphazenes [Me2Sn(tBu2PN)NH]2 and [nBu2Sn(Ph2PN)2NH]2
Doering,Haenssgen,Jansen,Nieger,Tellenbach
, p. 965 - 969 (2008/10/09)
Aminoiminophosphoranes tBu2P(NH)NH2 (1) and (H2NPPh2)N(Ph2PNH) (2) react with diaminostannanes R2Sn(NEt2)2 by cyclocondensation to give cyclostannaphosphazenes [Me2Sn(tBu2PN)NH]2 (3) and [R2Sn(Ph2PN)2NH]2 (4a, b) (a: R = Me, b: R = nBu). With 2 and Me3SnNEt2 the ring compound Me2Sn(Ph2PN)2NSnMe3 (5) besides Me4Sn is formed by per-N-stannylation and Sn-methyl group transfer. The crystal structures of 3 and 4b were determined by X-ray structure analysis. 3 forms a planar heterotricyclus containing three four-membered rings with two pentacoordinated tin atoms (space group P1 (No. 2); Z = 1). 4b consists of a tricyclic molecule with two puckered six-membered rings and one planar four membered tin-nitrogen ring with two pentacoordinated tin atoms (space group P1 (No. 2); Z = 1).
