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Studies in the coordination chemistry of some group VB and VIB ligands

Studies in the coordination chemistry of some group VB and VIB ligands
Studies in the coordination chemistry of some group VB and VIB ligands

The synthesis and properties of palladium(II) and platinum(II) halide complexes of a series of systematically varied dithioether ligands have been studied. The isolated compounds were of the type [M(dithioether)X2] (M = Pd, Pt; X = Cl, Br, I; dithioether - RS(CH2)nSR (n = 2,3), cisRSCH=CHSR, o-C6H4(SR)2i R = Me,b) which are assigned cis planar structures, (Pd($S(CH2)ns#)X2] (n = 4,6) which are polymeric with trans ligand bridges and [M(+S(CH2)12S.)X2] which are trans chelate monomers. The ligand $SCH2SO behaves as a monodentate ligand in [M($SCH2S+)2X2] compounds. Iron(III) bromide reacted with some bidentate group VB ligands to form complexes of the type [FeL2Br2][FeBr4], containing a low spin tetragonally distorted octahedral cation and a high spin tetrahedral anion, [Fe(L02)(H20)2Y2] [Y = N03i NCS) and also [(HL)2C13FeOFeC13]. Iron(III) halide complexes of monodentate group VB ligands have also been prepared. Cobalt(II) and nickel(II) halides reacted with some mixed donor (N, P, As, Sb, S) methyl-substituted o-phenylene ligands to give a range of complexes formulated as [NiLX2T and [CoLX2] (X = halide, N03i NCS) (CoL2X]Y (X = halide; Y = XA'CoX4, C104, B$y) and [CoL2](ClOy)2. A number of air-stable, mixed donor ligands have been tested for their suitability as extractants of nickel for a solvent extraction process. Their cobalt(II), nickel(II), and copper chemistry in both non aqueous and aqueous conditions has been investigated. The didocyl dithiophosphoric acid ligand exhibited the greatest potential. The above-mentioned formulations have been made on the evidence of infrared, electronic, MBssbauer and 1H nmr spectral data and also elemental analysis, molecular weight, conductivity and magnetic susceptibility measurements.

University of Southampton
Tuttlebee, Helen Evelyn
Tuttlebee, Helen Evelyn

Tuttlebee, Helen Evelyn (1981) Studies in the coordination chemistry of some group VB and VIB ligands. University of Southampton, Doctoral Thesis.

Record type: Thesis (Doctoral)

Abstract

The synthesis and properties of palladium(II) and platinum(II) halide complexes of a series of systematically varied dithioether ligands have been studied. The isolated compounds were of the type [M(dithioether)X2] (M = Pd, Pt; X = Cl, Br, I; dithioether - RS(CH2)nSR (n = 2,3), cisRSCH=CHSR, o-C6H4(SR)2i R = Me,b) which are assigned cis planar structures, (Pd($S(CH2)ns#)X2] (n = 4,6) which are polymeric with trans ligand bridges and [M(+S(CH2)12S.)X2] which are trans chelate monomers. The ligand $SCH2SO behaves as a monodentate ligand in [M($SCH2S+)2X2] compounds. Iron(III) bromide reacted with some bidentate group VB ligands to form complexes of the type [FeL2Br2][FeBr4], containing a low spin tetragonally distorted octahedral cation and a high spin tetrahedral anion, [Fe(L02)(H20)2Y2] [Y = N03i NCS) and also [(HL)2C13FeOFeC13]. Iron(III) halide complexes of monodentate group VB ligands have also been prepared. Cobalt(II) and nickel(II) halides reacted with some mixed donor (N, P, As, Sb, S) methyl-substituted o-phenylene ligands to give a range of complexes formulated as [NiLX2T and [CoLX2] (X = halide, N03i NCS) (CoL2X]Y (X = halide; Y = XA'CoX4, C104, B$y) and [CoL2](ClOy)2. A number of air-stable, mixed donor ligands have been tested for their suitability as extractants of nickel for a solvent extraction process. Their cobalt(II), nickel(II), and copper chemistry in both non aqueous and aqueous conditions has been investigated. The didocyl dithiophosphoric acid ligand exhibited the greatest potential. The above-mentioned formulations have been made on the evidence of infrared, electronic, MBssbauer and 1H nmr spectral data and also elemental analysis, molecular weight, conductivity and magnetic susceptibility measurements.

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Published date: 1981

Identifiers

Local EPrints ID: 460447
URI: http://eprints.soton.ac.uk/id/eprint/460447
PURE UUID: 21aa42c5-7648-417e-b9ae-90752bf002ae

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Date deposited: 04 Jul 2022 18:22
Last modified: 04 Jul 2022 18:22

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Author: Helen Evelyn Tuttlebee

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