Formation, structures, and reactivity of cis-hydroxy-, cis-methoxy-, and cis-mercaptoiridium hydrides. Oxidative addition of water to Ir(I)
作者:David. Milstein、Joseph C. Calabrese、Ian D. Williams
DOI:10.1021/ja00280a045
日期:1986.10
important role in water activation, including the water gas shift reaction, olefin and nitrile hydration, exchange reactions, and photodissociation of water, only few of them are known. The early-transition-metal complexes of this type tend to dimerize, whereas the late-transition-metal complexes tend to be unstable in the absence of excess water, probably because of an unfavorable formation constant. None
Concept of the H(δ+)⋯ H(δ–) interaction. A low-temperature neutron diffraction study of cis-[IrH(OH)(PMe<sub>3</sub>)<sub>4</sub>]PF<sub>6</sub>
作者:Raymond C. Stevens、Robert Bau、David Milstein、Ofer Blum、Thomas F. Koetzle
DOI:10.1039/dt9900001429
日期:——
complex cis-[IrH(OH)(PMe3)4]PF6 has been analyzed at 20 K by single-crystal neutrondiffraction. The results confirm the geometry derived from an earlier X-ray analysis. Perhaps the most significant result concerns the bending of the O–H group towards the hydride ligand, with a smaller-than-usual Ir–O–H angle of 104.4(7)°, suggestive of an attractive interaction between the electron-deficient H atom of
Rational design in homogeneous catalysis. Iridium(I)-catalyzed addition of aniline to norbornylene via nitrogen-hydrogen activation
作者:Albert L. Casalnuovo、Joseph C. Calabrese、David. Milstein
DOI:10.1021/ja00228a022
日期:1988.9
Thorn, David L.; Tulip, Organometallics, 1982, vol. 1, # 12, p. 1580 - 1586
作者:Thorn, David L.、Tulip
DOI:——
日期:——
Why Does the Tetrakis(trimethylphosphine)iridium(III) Hydridochloride Cation Adopt the Sterically and Electronically Unfavorable <i>Cis</i> Geometry?
作者:Ofer Blum、Ra'anan Carmielli、Jan M. L. Martin、David Milstein
DOI:10.1021/om0004848
日期:2000.10.1
Although the tetrakis(trimethylphosphine)iridium(III) hydridochloride cation, [HIrCl(PMe3)(4)](+), and similar complexes would intuitively be expected to adopt a trans geometry on electronic and sterical grounds, experimentally the cis geometry is found to prevail. Quantum chemical calculations suggest that the trans and cis structures are nearly isoenergetic, such that the cis:trans equilibrium is dominated by the higher entropy of the lower symmetry cis structure.