Comparative study of NS2 ligands, S-alkyl vs S-aryl. Molecular structure of [2,6-bis(((2-(methoxycarbonyl)phenyl)thio)methyl)pyridine]dichlorocopper(II)

Complexes of late transition metals containing the mixed donor ligands 2,6-(RSCH2)2C5H3N (R = Ph, Me): Crystal structures of [{Cu(2,6-(PhSCH2)2C5H3N)(µ-X)}2] (X = Cl, Br) and [Ni(2,6-(PhSCH2)2C5H3N)Br2]

“…9 This ligand type contains three donor atoms, allowing for the ligand to act as a tridentate (II) or bidentate ligand (III). In the solid-state, these ligands generally behave as tridentate ligands, bonding to metal centres through the pyridyl nitrogen centre and both sulfur atoms, [10][11][12][13][14][15][16] with one exception where bidentate ligation is observed. 17 In solution, although the ligand can behave as a bidentate, chelating metal centres through the pyridyl nitrogen and one sulfur atom, it can readily undergo fluxional processes.…”

“…One study of CuCl 2 complexes containing NS 2 ligands have shown that alkylthioether ligands are less π-acidic than aryl-thioether ligands and that the latter ligand has a higher ability to stabilise low oxidation state metals. 14 Herein we report the preparation of a number of Ni() and Cu() halide complexes containing the ligands 2,6-bis(methylthiomethyl)pyridine (L 1 ) and 2,6-bis(phenylthiomethyl)pyridine (L 2 ). We show that for nickel() complexes, changing both the ligand and halide results in a change in structure of the complexes, through spectral characterisation as well as single crystal X-ray diffraction studies.…”

[2,6-Bis(2-pyrimidinylthiomethyl)pyridine]dichlorocopper(II) methanol solvate

“…The coordination chemistry of 2,6-bis(R-thiomethyl)pyridine changes considerably with the nature of the R group (Teixidor, Sfinchez-Castell6, Lucena, Escriche, Kivek/is, Sundberg & Casab6, 1991). The present ligand, 2,6-bis(2-pyrimidinylthiomethyl)pyridine, in the title compound, (I), has seven potential donor atoms, which afford a large number of different possible coordination modes.…”

Coordination chemistry of Co complexes containing tridentate SNS ligands and their application as catalysts for the oxidation of n-octane

“…13 Synthesis of 2,6-bis(C 6 H 5 SCH 2 )pyridine (L4). This method was adapted from a study by Teixidor et al 37 Sodium metal (0.14 g, 6 mmol) was stirred with thiophenol (0.61 ml, 6 mmol) in ethanol (10 ml) in a 20 ml Schlenk tube for 10 min. The solution was then added dropwise to an ice cooled solution of PMT (1.52 g, 3 mmol) in THF (20 ml) and the resulting solution was stirred for a further three hours at 0 °C.…”

“…36 This is usually achieved by exploiting the relative difference in binding abilities between the hard nitrogen donor and the soft sulfur donor atoms to metal centers. 37 Being hemilabile also affords the metal complex with greater flexibility and balance between stability and reactivity. 38,39 To the best of our knowledge, there has been no work reported on Co-based SNS complexes or the application of SNS pincer complexes for C-H or paraffin activation.…”