Dimethylphosphinato and Dimethylarsinato Complexes of Palladium(II), [Pd(Me2PO2)(2)](3) and Pd(Me2AsO2)(2), and their Adducts

作者：Ioannou Panayiotis V^*

来源：Zeitschrift fur Anorganische und Allgemeine Chemie, 2010, 636(7): 1347-1353.

DOI：10.1002/zaac.200900532

• Dimethylphosphinic acid
• Dimethylarsinic acid
• Palladium
• Dimethylphosphinates
• Dimethylarsinates
• Arsenic

The complexes [Pd(Me2PO2)(2)](3) and Pd(Me2AsO2)(2) were prepared from the corresponding acids and palladium(II) acetate. Their structures were deduced by IR and NMR spectroscopy. Addition of pyridine and 2,2'-bipyridine to [Pd(Me2PO2)(2)](3) gave the adducts Pd(Me2PO2)(2)py(2) and Pd(Me2PO2)(2)bipy, which were characterized by H-1 NMR spectroscopy. Addition of nicotinic acid and nicotinamide in water gave the adducts Pd(Me2PO2)(2)L-2, whereas in methanol the adducts Pd(Me2PO2)(2)L were obtained. The cacodylate containing complex formed the adducts Pd(Me2AsO2)(2)py and Pd(Me2AsO2)(2)bipy(1/2), which are unstable in CDCl3. Triphenylphosphine deoxygenated both Pd(Me2MO2)(2) complexes, but the palladium(II) containing products could not be isolated. The expected Pd(Me2P-O)(2) reacted further and gave many products, whereas the anticipated Pd(Me2As-O)(2) did not bind triphenylphosphine.

• 出版日期2010