Amphoteric ligands. 2. Formation and structure of a novel carbon-hydrogen-bond-containing product from hydridomanganese pentacarbonyl and an amphoteric ligand
Oxygen Binding to [Pd(L)(L′)] (L= NHC, L′ = NHC or PR<sub>3</sub>, NHC = <i>N</i>-Heterocyclic Carbene). Synthesis and Structure of a Paramagnetic <i>trans</i>-[Pd(NHC)<sub>2</sub>(η<sup>1</sup>-O<sub>2</sub>)<sub>2</sub>] Complex
作者:Xiaochen Cai、Subhojit Majumdar、George C. Fortman、Catherine S. J. Cazin、Alexandra M. Z. Slawin、Charles Lhermitte、Rajeev Prabhakar、Meaghan E. Germain、Taryn Palluccio、Steven P. Nolan、Elena V. Rybak-Akimova、Manuel Temprado、Burjor Captain、Carl D. Hoff
DOI:10.1021/ja1103348
日期:2011.2.9
The reactivity of a number of two-coordinate [Pd(L)(L')] (L = N-heterocyclic carbene (NHC) and L' = NHC or PR3) complexes with O-2 has been examined. Stopped-flow kinetic studies show that O-2 binding to [Pd(IPr)(P(p-tolyl)(3))] to form cis-[Pd(IPr)(P(p-tolyl)(3))-(eta(2)-O-2)] occurs in a rapid, second-order process. The enthalpy of O-2 binding to the Pd(0) center has been determined by solution calorimetry to be -26.2(1.9) kcal/mol. Extension of this work to the bis-NHC complex [Pd(IPr)(2)], however, did not lead to the formation of the expected diamagnetic complex cis-[Pd(IPr)(2)(eta(2)-O-2)] but to paramagnetic trans-[(Pd(IPr)(2)(eta(1)-O-2)(2)], which has been fully characterized. Computational studies addressing the energetics of O-2 binding have been performed and provide insight into reactivity changes as steric pressure is increased.
Basicity of metal carbonyl complexes communication 17. Protonation of manganese and rhenium cyclopentadienylcarbonyl complexes
作者:A. G. Ginzburg、P. V. Petrovskii、V. N. Setkina、D. N. Kursanov
DOI:10.1007/bf01157349
日期:1985.1
Amphoteric ligands. 2. Formation and structure of a novel carbon-hydrogen-bond-containing product from hydridomanganese pentacarbonyl and an amphoteric ligand
作者:David L. Grimmett、Jay A. Labinger、John N. Bonfiglio、Steven T. Masuo、Eileen Shearin、Joel S. Miller