Premium
Nickel‐Triad Complexes of a Side‐on Coordinating Distannene
Author(s) -
Sindlinger Christian P.,
Weiß Sebastian,
Schubert Hartmut,
Wesemann Lars
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201411025
Subject(s) - adduct , moiety , carbene , transition metal , chemistry , triad (sociology) , olefin fiber , nickel , metal , crystallography , stereochemistry , nuclear magnetic resonance spectroscopy , catalysis , organic chemistry , psychology , psychoanalysis
NHC adducts of the stannylene Trip 2 Sn (Trip=2,4,6‐triisopropylphenyl) were reacted with zero‐valent Ni, Pd, and Pt precursor complexes to cleanly yield the respective metal complexes featuring a three‐membered ring moiety Sn‐Sn‐M along with carbene transfer onto the metal and complete substitution of the starting ligands. Thus the easily accessible NHC adducts to stannylenes are shown to be valuable precursors for transition‐metal complexes with an unexpected SnSn bond. The complexes have been studied by X‐ray diffraction and NMR spectroscopy as well as DFT calculations. The compounds featuring the structural motif of a distannametallacycle comprised of a [(NHC) 2 M 0 ] fragment and Sn 2 Trip 4 represent rare higher congeners of the well‐known olefin complexes. DFT calculations indicate the presence of a π‐type Sn–Sn interaction in these first examples for acyclic distannenes symmetrically coordinating to a zero‐valent transition metal.