Organo-gallium and indium complexes with dithiolate and oxo ligands: Synthesis, structures and applications

Abstract

The chemistry of organo-gallium and indium complexes with dithiolate and internally functionalised oxo ligands has been explored. With 1,1-dithiolate ligands both classical and organometallic complexes of gallium and indium, [M(S ∩ S) 3 ], [RM(S ∩ S) 2 ] and [R 2 M(S ∩ S)] (where R = Me or Et; M = Ga or In; S ∩ S = RCS 2 , ROCS 2 , R 2 NCS 2 and (RO) 2 PS 2 ) have been isolated. Reactions of internally functionalised oxo ligands with R 3 M·OEt 2 afforded diorganometal complexes [R 2 ML] n . Molecular structures of several of these complexes have been established by single crystal X-ray diffraction analyses. Complexes derived from oxo ligands showed photoluminescence. They have been used as alkylating agents for C-C coupling reactions of aryl bromides in the presence of PdCl 2 (PPh 3 ) 2 . Indium dithiolate complexes have been used as molecular precursors for the preparation of mono dispersed β-In 2 S 3 nanoparticles.

Synthesis, Characterization, and X-Ray Structure of Bis(O-butyldithiocarbonato)bis(3-ethyl pyridine)nickel(II)

“…These values show double bond character due to the delocalization over the two C-S bonds [19]. The bond angles in the pyridine ring vary from 117.8(4) to 124.1 (4) ∘ , the average value being 119.9(8) ∘ , and these values of bond angles and bond distances are in good agreement with those reported for some analogous Ni-dithiocarbonato complexes [20][21][22][23]. The plane formed by the atoms Ni1, S1, C1, and S2 makes a dihedral angle of 88.20 (9) ∘ with the plane of ethyl-pyridine ring, meaning thereby that both planes are held almost perpendicular to each other.…”

“…These compounds form water insoluble complexes with most of the transition metals and are thus extensively employed for the separation and quantitative determination of cations of transition metals [3]. Beside this these ligands are also investigated for nonlinear optical application and as a synthetic precursor for the generation of metal sulfide nanoparticles [4,5]. Xanthates as ligand are also extensively studied for a wide variety of structural features.…”