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

Abstract

The complexes [Pd(Me 2 PO 2 ) 2 ] 3 and Pd(Me 2 AsO 2 ) 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(Me 2 PO 2 ) 2 ] 3 gave the adducts Pd(Me 2 PO 2 ) 2 py 2 and Pd(Me 2 PO 2 ) 2 bipy, which were characterized by 1 H NMR spectroscopy. Addition of nicotinic acid and nicotinamide in water gave the adducts Pd(Me 2 PO 2 ) 2 L 2 , whereas in methanol the ad-* Prof. Dr. P. V. Ioannou E-Mail: ioannou@chemistry.upatras.gr [a]

Colorimetric screening of elevated urinary mercury levels by a novel Hg2+-selective probe of resorufin phosphinothioate

“…In addition, as shown in Fig. S6 (ESI † ), in the presence of Hg 2+ ions, the resonance of methyl protons of the dimethylphosphinothioate moiety of probe MP-1 at 2.11 ppm disappeared, and a new doublet peak, which is ascribable to the resonance of the methyl protons of the byproduct dimethylphosphinic acid, 50 at 1.32 ppm emerged. The mass spectrum of the purified signaling product confirmed a diagnostic peak at m / z = 213.1, which is in agreement with the calculated mass (calculated for C 12 H 7 NO 3 , 213.0) of signaling product 1 (Fig.…”

Stabilization of Al(iii) solutions by complexation with cacodylic acid: speciation and binding features

“…On the other side, the cacodylate anion is unreactive towards many divalent metal ions; 14 for this reason it can serve to ensure buffer inactivity for many biomolecule/metal ion (or metal complex) systems. On the other hand, there is evidence that the cacodylate anion can bind to metal ions such as Sb(III), Bi(III), 15 Pd(II) 16 and some rare earth metals. 17 The formation of the Al(III)/ Cac complex, 18 and more recently the synthesis of complexes of the dimethylarsinate anion and metal ions of group XIII (Al, Ga, In, Tl) has been reported.…”