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Synthesis and structural studies of dicationic Pd(II) and Pt(II) complexes of 2-(alkylchalcogenomethyl)pyridines, [M{NC5H4-2-(CH2ER)}2][PF6]2

Citation

Jones, RC and Gardiner, MG and Skelton, BW and Tolhurst, V-A, Synthesis and structural studies of dicationic Pd(II) and Pt(II) complexes of 2-(alkylchalcogenomethyl)pyridines, [M{NC5H4-2-(CH2ER)}2][PF6]2, Polyhedron, 156 pp. 291-296. ISSN 0277-5387 (2018) [Refereed Article]

Copyright Statement

Copyright 2018 Elsevier Ltd.

DOI: doi:10.1016/j.poly.2018.09.058

Abstract

Six novel dicationic complexes of the formula [ML2][PF6]2, were prepared from the reaction of MCl2 (M = Pd, Pt) with two equivalents of Tl[PF6] in acetonitrile (MeCN), followed by addition of two equivalents of 2-(alkylchalcogenomethyl)pyridine (N,E) ligands (L) [L = 2-(methylthiomethyl)pyridine (L1), 2-(phenylthiomethyl)pyridine (L2), 2-(methylselenomethyl)pyridine (L3)] at room temperature. Structures of the synthesised complexes [M(L1)2][PF6]2 [M = Pd (1a), Pt (1b)] and [M(L3)2][PF6]2 [M = Pd (3a), Pt (3b)] were characterised by single crystal X-ray diffraction studies, illustrating they crystallise in the triclinic crystal system in the space group P1̄ . The metal centres exhibit a distorted square planar geometry, with the donor atoms of the chelated N,E ligands arranged trans with respect to each other. The orientation of the methyl moieties of the ligands with respect to each other and the square planar metal were varied, with the methyl moieties in [Pt(L3)2][PF6]2 (3b) having anti-geometry in the solid state while those of [M(L1)2][PF6]2 [M = Pd (1a), Pt (1b)] and [Pd(L3)2][PF6]2 (3a) show the methylselenoether groups to have syn-geometries with respect to themselves and the metal plane. All synthesised complexes were further characterised by elemental analysis, FT-IR spectroscopy and liquid secondary ionisation mass spectrometry (LSIMS) techniques.

Item Details

Item Type:Refereed Article
Keywords:catalysis, synthesis, structure, plantinum, palladium, heteroleptic, dicationic, X-ray
Research Division:Chemical Sciences
Research Group:Inorganic Chemistry
Research Field:Transition Metal Chemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Gardiner, MG (Associate Professor Michael Gardiner)
Author:Tolhurst, V-A (Dr Vicki-Anne Gardiner)
ID Code:128705
Year Published:2018
Deposited By:Chemistry
Deposited On:2018-10-08
Last Modified:2018-11-19
Downloads:0

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