Haloalkyl complexes of transition metals: preparation and characterization of (dichloromethyl)cobalt(III) derivatives (original) (raw)

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Preparation and Characterization of Dinuclear Cobalt(III) Complexes Containing Four Different Kinds of Ligands; Glycinato, Ethylenediamine, Ethylenediamine-N,N'-diacetato, and .MU.-Hydroxo

Bulletin of the Chemical Society of Japan, 1994

The aromatic thioether (2,6-bis((2-(dimethylamino)ethylamino)methyl)phenyl)(tert-butyl)sulfane (6) reacts with [Pd(NCCH 3 ) 2 Cl 2 ] under S-C bond cleavage to give the dinuclear palladium(II) complex [L 3 Pd 2 (l-Cl)] 2+ (7), where (L 3 ) À = 2,6-bis((2-(dimethylamino)ethylamino)methyl)-thiophenolate. Complex 7 reacts readily with sodium acetate and sodium acetamide by the displacement of the bridging chloride group forming [L 3 Pd 2 (l-OAc)] 2+ (8) and [L 3 Pd 2 (l-ONHCCH 3 )] 2+ (9), respectively. Complex 8 can also be prepared by the reaction of 6 with [Pd(OAc) 2 ]. All complexes were isolated as perchlorate salts and fully characterized by ESI-MS, IR, 1 H, and 13 C NMR spectroscopy. The structures of 7[ClO 4 ] and 9[ClO 4 ] 2 have been determined by X-ray crystallography. The latter structure reveals a l 1,3bridging acetamidate unit showing that (L 3 ) À can alter its conformation sufficiently to accommodate a multi-atom bridging species between the two Pd atoms.

Synthesis and structure of chloro(ligand)bis(diphenylglyoximato)cobalt(III) complexes

Inorganica Chimica Acta, 1987

The synthesis and characterization of trans-chloro-(ligand)bis(diphenylglyoximato)cobalt(III) complexes [ligand = pyridine (py), (Y-, /3-, or y-picoline (a-pit, /3-pie, T-pie), 3,5-lutidine (lut), p-toluidine @-tol) and PPhJ] is presented. X-ray crystal structure determination of the pyridine (1) and p-toluidine (6) derivatives has been carried out. Compound 1 crystallizes in the monoclinic system, space group PZ,/n, with Z = 4 and unit cell parameters a = 23.124(4), b = 13.009 and c = 11.204(3) A, and fl= 93.14(2)". Compound 6 crystallizes in the monoclinic system, space group F2Jn, with Z = 4 and unit cell parameters a = 18.792(3), b = 12.540(2) and c = 15.346(3) A, and fl= 97.54(2)'.

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