17155-08-7Relevant articles and documents
Reactivity of [M(?P)(acac-O,O′)] [M = Pt, Pd; ?P = CH2-C6H4-P(o-tolyl)2-ΚC,P; acac = 2,4-pentanedionato] toward HgX2 (X = Br, I, CH3COO, CF3COO). New polynuclear complexes containing Pt-Hg Bonds.
Ara, Irene,Falvello, Larry R.,Forniés, Juan,Sicilia, Violeta,Villarroya, Pablo
, p. 3091 - 3099 (2000)
The complexes [M(?P)(acac-O,O′)] [M = Pt (1) Pd (1′); CAP = CH2-C6H4-P(o-tolyl)2-kC,P; acac = 2,4-pentanedionato] were prepared by the reaction of [M(?P)(μ-Cl)]2 [M = Pt, Pd] with Tl(acac) and fully characterized. The reactions of [Pt(?P)(acac-O,O′)] (1) with equimolar amounts of HgX2 (X = I, Br) give the polynuclear complexes [Pt(?P)(acac-O,O′)HgI(μ-I)]2 (2) and [{Pt(?P)(acac-O,O′)HgBr(μ-Br)}2(μ-HgBr 2)] (3) containing unsupported Pt-to-Hg donor bonds. In the pentanuclear complex 3, the central mercury atom shows an unexpected square-planar environment, unprecedented for halomercurates(II). The complex [Pt(?P)(acac-O.O′)] (1) also reacts with Hg(O2CR)2 (R = CH3, CF3), but in 1:2 molar ratio, to afford the neutral hexanuclear complexes [Pt(?P)(μ-O2CR)2Hg(μ3-acac 2--κC3,O)Hg(O2CR- κO)]2 [R = CH3 (4), CF3 (5)]. An X-ray study of 4 revealed that these compounds contain very short platinum-to-mercury donor bonds supported by two carboxylate groups, along with an unusual dimercurated acetylacetone moiety. The reactions of [Pd(?P)(acac-O,O′)] (1′) with HgX2 (X = Br, I, CH3COO, CF3COO) proceed mainly (X = Br, CH3COO, CF3COO) with substitution of the acac-O,O′ ligand by X from the coordination environment of the palladium center to give the binuclear derivatives [Pd(?P)(μ-X)]2 (X = Br, CH3COO, CF3COO), hindering the obtention of palladium-mercury compounds by this route.
