Oxidative Addition to Diplatinum(II) Complexes: Stereoselectivity and Cooperative Effects
| Autor: | Richard J. Puddephatt, and Michael C. Jennings, Cliff R. Baar, Lee P. Carbray |
|---|---|
| Rok vydání: | 2000 |
| Předmět: | |
| Zdroj: | Organometallics. 19:2482-2497 |
| ISSN: | 1520-6041 0276-7333 |
| DOI: | 10.1021/om000108n |
| Popis: | The stereochemistry of oxidative addition of MeI and MeO3SCF3 to binuclear dimethylplatinum(II) complexes containing bis(bidentate) ligands such as cis- and trans-1,2-C6H10(NCH-2-C5H4N)2, 1 and 2a, has been studied. Oxidative addition of the Me−X bond (X = I or CF3SO3) occurred at both dimethylplatinum centers, often with high stereoselectivity, to give bis(trimethylplatinum(IV)) complexes. Two types of adducts were formed, either neutral complexes containing {PtMe3X}2 groups or ionic complexes containing [(PtMe3)2(μ-X)]+X- groups. When X = iodide, both forms were detected, but when X = triflate, the ionic form with one bridging triflate ligand dominated. The triflate ligand was easily displaced by water to give an aqua complex, and reaction of NaBH4 with cis-1,2-[C6H10{NCH-2-C5H4N(PtMe3)}2(μ-O3SCF3)][O3SCF3] gave the platinum(IV) borohydride complex cis-1,2-[C6H10{NCH-2-C5H4N(PtMe3)}2(μ-BH4)][O3SCF3] as a single diastereomer. Addition of PPh3 to trans-1,2-[C6H10{NCH-2-C5H4N(PtMe3)}2(μ-O3SCF3)][O3SCF3] ga... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|