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The Role of the “Ligand Periphery” in the Coordination of Tripodal Triamidostannates(II) to Iridium: Simple Ligation vs. Cyclometallation
Author(s) -
Kilian Michaela,
Wadepohl Hubert,
Gade Lutz H.
Publication year - 2008
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200800090
Subject(s) - chemistry , ligand (biochemistry) , iridium , aryl , medicinal chemistry , stereochemistry , stannate , receptor , organic chemistry , catalysis , alkyl , biochemistry , zinc
Reaction of the triamidostannates(II) MeSi{SiMe 2 N(3,5‐xyl)} 3 SnLi(OEt 2 ) ( 2a ) and MeSi{SiMe 2 N(p‐tol)} 3 SnLi(OEt 2 ) ( 2b ) with [IrCl(CO)(PPh 3 ) 2 ] gave the Ir I ‐Sn complex [MeSi{SiMe 2 N(3,5‐xyl)} 3 SnIr(PPh 3 ) 2 (CO)] ( 3a ) for the former. In contrast, for the tolyl stannate CH‐activation occurred to give the Ir III compound [MeSi{SiMe 2 N(p‐tol)} 2 {SiMe 2 N(2‐C 6 H 3 ‐4‐CH 3 )}SnIr(H)(PPh 3 ) 2 (CO)] ( 3b ). The latter is thus avoided by introduction of suitably placed substituents in the peripheral aryl groups of the triamidostannate ligand.