High Quantum Yield Molecular Bromine Photoelimination from Mononuclear Platinum(IV) Complexes
摘要:
Pt(IV) complexes trans-Pt(PEt3)(2)(R)(Br)(3) (R = Br, aryl and polycyclic aromatic fragments) photoeliminate molecular bromine with quantum yields as high as 82%. Photoelimination occurs both in the solid state and in solution. Calorimetry measurements and DFT calculations (PMe3 analogs) indicate endothermic and endergonic photoeliminations with free energies from 2 to 22 kcal/mol of Br-2. Solution trapping experiments with high concentrations of 2,3-dimethyl-2-butene suggest a radical-like excited state precursor to bromine elimination.
Normal- and high-pressure kinetics and mechanism of the cis-trans isomerization of PtXR(PEt3)2 complexes. Evidence for an initial solvolysis step
作者:Hartwig Kelm、Wynand J. Louw、Donald A. Palmer
DOI:10.1021/ic50206a011
日期:1980.4
195Pt, 119Sn and 31P NMR studies of alkyl, aryl and acyl trichlorostannate complexes of platinum(II). The crystal structure of trans-[Pt(SnCl3)(COC6H5)(PEt3)2]
作者:Alberto Albinati、Urs Von Gunten、Paul S. Pregosin、Hubert J. Ruegg