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Structural and Spectroscopic Characterization of an Unprecedented Cationic Transition‐Metal η 1 ‐Silane Complex
Author(s) -
Yang Jian,
White Peter S.,
Schauer Cynthia K.,
Brookhart Maurice
Publication year - 2008
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.200705359
Subject(s) - silane , cationic polymerization , denticity , covalent bond , chemistry , silicon , transition metal , crystallography , metal , ligand (biochemistry) , characterization (materials science) , stereochemistry , materials science , nanotechnology , polymer chemistry , organic chemistry , crystal structure , biochemistry , receptor , catalysis
No room for side‐on : In the complex shown, Et 3 SiH is bound to the cationic Ir III center in an unprecedented end‐on fashion through the SiH bond with no appreciable metal–silicon interaction (white H, green Si, pink Ir, red O, orange P, gray C). The long Ir⋅⋅⋅Si distance of 3.346(1) Å is 0.97 Å greater than the sum of the covalent radii of Ir and Si. DFT studies indicate that the t Bu substituents on the bidentate phosphorus ligand dictate the coordination mode of the silane.