Triple bonds of niobium with silicon, germaniun and tin: the tetrylidyne complexes [(κ³-tmps)(CO)₂Nb[triple bond, length as m-dash]E-R] (E = Si, Ge, Sn; tmps = MeSi(CH₂PMe₂)₃; R = aryl).

ABSTRACT: A systematic, efficient approach to first complexes containing a triple bond between niobium and the elements silicon, germanium or tin is reported. The approach involves a metathetical exchange of the niobium-centered nucleophile (NMe₄)[Nb(CO)₄(κ²-tmps)] (1) (tmps = MeSi(CH₂PMe₂)₃) with a suitable organotetrel(ii)halide. Compound 1 was obtained from (NMe₄)[Nb(CO)₆] and the triphosphane tmps by photodecarbonylation. Reaction of 1 with the disilene E-Tbb(Br)Si[double bond, length as m-dash]Si(Br)Tbb in the presence of 4-dimethylaminopyridine afforded selectively the red-brown silylidyne complex [(κ³-tmps)(CO)₂Nb[triple bond, length as m-dash]Si-Tbb] (2

SUBMITTER: Filippou AC 

PROVIDER: S-EPMC5956830 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature