Platinum(II), palladium(II), and nickel(II) thiosalicylate complexes

Abstract

A series of platinum(), palladium() and nickel() complexes containing thiosalicylate ligands have been prepared by the reaction of [MX 2 L 2 ] complexes [X = halide or acetate; L or L 2 = ancillary neutral donor ligand such as a tertiary phosphine or cycloocta-1,5-diene (cod)] with thiosalicylic acid in methanol with added pyridine.

The First Low-Spin Nickel Complex with Two Coordinated Water Molecules, [Ni(o-MeO-dppp)(H2O)2](PF6)2 − Synthesis and Structural Characterization

“…[16] The NiϪP distances are similar to that in the nickel(II) thiosalicylate complex [Ni(dppp)(SC 6 H 4 CO 2 )] [2.1697(8) Å ]. [17] The bite angle of the bidentate phosphane ligand is 89.02(3)°in the present compound, similar to that of the unsubstituted analogue dppp in nickel complexes (87.3°). [18] The short Ni1···O37 distance [2.866(2) Å ] indicates the presence of an electrostatic interaction between this ortho-methoxy group and the nickel(II) center.…”

Oxidative addition of functional disulfides to platinum(II): Formation of chelating and bridging thiolate–carboxylate complexes of platinum(IV)

“…In particular, in an earlier study it was shown that the reaction of [PtMe 2 (2,2′-bipyridine)], 1, with diphenyl disulfide occurred according to Scheme 1, with initial formation of a diplatinum (III) complex [Pt 2 (SPh) 2 Me 2 (bipy) 2 ], 2a, which finally gave the dithiolatoplatinum(IV) complex [Pt(SPh) 2 Me 2 (bipy)], 3a [9]. This article shows that the disulfides R 2 S 2 with R = CH 2 CH 2 CO 2 H or C 6 H 3 -4-NO 2 -3-CO 2 H can give the first examples of thiolate-carboxylate complexes of platinum(IV) [12,13].The reaction of complex 1 [9,14] with the disulfide R 2 S 2 , R=CH 2-CH 2 CO 2 H, in either acetone or dimethylsulfoxide occurred according to Scheme 2 to give the 3-thiolatopropionate complex [PtMe 2 (SCH 2-CH 2 CO 2 )(bipy)], 4, which was isolated as a red-brown solid. Complex 4 was characterized in the 1 H NMR by the presence of two methylplatinum resonances at δ = 0.43 [s, 3 H, 2 J(PtH) = 73 Hz, MePt trans to O] and 1.56 [s, 3 H, 2 J(PtH) = 69 Hz, MePt trans to N] and by four overlapping multiplet resonances, integrating to a total of four protons, for the CH 2 CH 2 protons in the range δ = 2.3-2.6.…”

“…In particular, in an earlier study it was shown that the reaction of [PtMe 2 (2,2′-bipyridine)], 1, with diphenyl disulfide occurred according to Scheme 1, with initial formation of a diplatinum (III) complex [Pt 2 (SPh) 2 Me 2 (bipy) 2 ], 2a, which finally gave the dithiolatoplatinum(IV) complex [Pt(SPh) 2 Me 2 (bipy)], 3a [9]. This article shows that the disulfides R 2 S 2 with R = CH 2 CH 2 CO 2 H or C 6 H 3 -4-NO 2 -3-CO 2 H can give the first examples of thiolate-carboxylate complexes of platinum(IV) [12,13].…”

(p-Cymene)thioglycollatoruthenium(II) dimer; a complex with an ambi-basic S,O-donor ligand

“…We and others have recently been exploring the coordination chemistry of the thiosalicylate ligand which combines a soft S -donor site with a hard O -one [1,2]. It forms complexes with metals with both high [e.g.…”

“…Mn(I)] oxidation states [3,4], as S-or O-bonded only or more commonly as S,O-bidentate chelating [1,2,[5][6][7]. Higher aggregates are possible through bridging via the S atom, or by it acting as a doubly monodentate ligand to two separate metal atoms [1][2][3][4][5].…”