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Bulky‐Hindrance‐Controlled Ligand Transformation from Linked Bis(amidinate) to Linked Imido‐Amidinate Promoted by a Mono(cyclopentadienyl)titanium Group
Author(s) -
Bai ShengDi,
Guo JianPing,
Liu DianSheng,
Wong WaiYeung
Publication year - 2006
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200600658
Subject(s) - chemistry , steric effects , cyclopentadienyl complex , ligand (biochemistry) , intramolecular force , stereochemistry , medicinal chemistry , titanium , silylation , catalysis , organic chemistry , receptor , biochemistry
A novel class of silyl‐linked bis(amidinate) ligands [SiMe 2 {NC(Ph)N(2,6‐R 2 Ph)Li} 2 ] [ L 1 (R = H), L 2 (R = Me), and L 3 (R = i Pr)] reacted with TiCl 3 (C 5 H 5 ) to produce the half‐sandwich titanium complexes 1 , 2 , and 3 . The molecular structures of 1 – 3 were confirmed successfully by X‐ray crystallography. An unprecedented intramolecular ligand transformation from the linked bis(amidinate) configuration to the linked imido‐amidinate configuration took place in the cases of L 1 and L 2 . It was found that the rearrangement process was related to the steric hindrance of the terminal substituents. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)