@article {1286, title = {Synthesis, characterization, and reactivity of the first hafnium alkyl complex stabilized by amidate ligands}, journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie}, volume = {83}, number = {6-7}, year = {2005}, note = {ISI Document Delivery No.: 963UVTimes Cited: 7Cited Reference Count: 20}, month = {Jun}, pages = {1037-1042}, type = {Article}, abstract = {A photo and thermally stable bis(amidate)-dibenzyl complex of Hf ([(DMP)(NO)(Ph)](2)Hf(CH2Ph)(2)(THF) (2a) was formed as a monosolvated THF adduct in near quantitative yield from Hf(CH2Ph)(4) and N-2,6-dimethylphenyl(phenyl)amide (1). Isomerization between the THF-bound product and the THF-free product can be observed visually by the conversion from a red-orange product at low temperatures to a pale yellow product at high temperatures. Solid-state crystallographic characterization of the orange product confirmed its constitution as a monosolvated species. Kinetic parameters for the exchange of the THF moiety were determined from variable-temperature NMR experiments. The product of the hydrolysis of the Hf dibenzyl species by water was characterized by X-ray crystallography, and was found to be a rare tetrametallic Hf oxo cluster species (3).}, keywords = {amidate, CHEMISTRY, COORDINATION CHEMISTRY, CRYSTAL, exchange processes, hafnium, HYDROAMINATION, MOLECULAR-STRUCTURE, organometallic, protonolysis, TITANIUM}, isbn = {0008-4042}, url = {://000231832500064}, author = {Thomson, R. K. and Patrick, B. O. and Schafer, L. L.} }