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Chemistry of Stannylene‐Based Lewis Pairs: Dynamic Tin Coordination Switching Between Donor and Acceptor Character
Author(s) -
Krebs Kilian M.,
Freitag Sarah,
Schubert Hartmut,
Gerke Birgit,
Pöttgen Rainer,
Wesemann Lars
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201406486
Subject(s) - chemistry , ligand (biochemistry) , coordination complex , heteronuclear molecule , moiety , adduct , intramolecular force , acceptor , crystallography , lewis acids and bases , nuclear magnetic resonance spectroscopy , stereochemistry , organic chemistry , catalysis , receptor , biochemistry , physics , metal , condensed matter physics
The coordination chemistry of cyclic stannylene‐based intramolecular Lewis pairs is presented. The P→Sn adducts were treated with [Ni(COD) 2 ] and [Pd(PCy 3 ) 2 ] (COD=1,5‐cyclooctadiene, PCy 3 =tricyclohexylphosphine). In the isolated coordination compounds the stannylene moiety acts either as an acceptor or a donor ligand. Examples of a dynamic switch between these two coordination modes of the PSn ligand are illustrated and the structures in the solid state together with heteronuclear NMR spectroscopic findings are discussed. In the case of a Ni 0 complex, 119 Sn Mössbauer spectroscopy of the uncoordinated and coordinated phosphastannirane ligand is presented.