Synthesis and photochemical study of Cu(I) complexes with tri-p-tolylphosphine and heterocyclic thiones. The crystal structure of [CuCl(pymtH)(p-CH3C6H4)3P]2

Synthesis and Structural Characterisation of Diorganotin(IV) and Diphenyllead(IV) Complexes of Pyrimidine‐2‐thionate Derivatives

“…These ligands, besides having solubilising and bulky groups, belong to one of the most versatile types of sulfur ligand in terms of coordination modes. For example, they can act (a) as a neutral monodentate ligand coordinated through the sulfur atom, [24] through one of the nitrogen atoms, [25] and as a bridging ligand through sulfur [26] or as an N,S-chelating ligand, [27,28] or (b) as an anionic ligand, in which case they can be monodentate through the sulfur atom, [29] an N,S-chelating ligand [30][31][32] or Scheme 1. a binuclear bridging ligand through nitrogen and sulfur, [33] or sulfur only, [34] and as a binuclear triply bridging ligand through sulfur and one of the nitrogen atoms, [31,35] or the two nitrogen and sulfur atoms, [36,37] and as a trinuclear triply bridging system. [38] Moreover, these ligands were chosen because they are unsymmetrical ambidentate systems and can therefore give rise to linkage isomerism when they are coordinated in some of the aforementioned ways.…”

Electrochemical Synthesis and Structural Characterisation of Cadmium and Mercury Complexes Containing Pyrimidine‐2‐thionate Ligands

“…This type of ligand, besides having solubilising and bulky groups that might modify the degree of aggregation as a result of steric constraints, is one of the most versatile sulfur ligands. These ligands can act as follows: (a) a neutral monodentate ligand coordinated through the sulfur atom, [26] through one of the nitrogen atoms, [27] and as a bridging ligand through sulfur [28] or as an N,S-chelating ligand, [29,30] and (b) as an anionic ligand, in which case it can be monodentate through the sulfur atom, [31] as an N,Schelating ligand, [32] as a binuclear bridging ligand through nitrogen and sulfur, [33] or sulfur only, [34] as a binuclear triply bridging ligand through sulfur and one of the nitrogens [35] or the two nitrogen and sulfur atoms, [36,37] and as a trinuclear triply bridging system. [38] Scheme 1.…”

Copper(I) Halide Complexes with Triphenylphosphane and Heterocyclic Thione Ligands: The Crystal Structures of [Bis(Triphenylphosphane)(Benzimidazole-2-Thione)Copper(I) Iodide], [Bis(Triphenylphosphane)(Benzothiazole-2-Thione)Copper(I) Iodide], and Bis[µ-S-(Benzimidazole-2-Thione)(Triphenylphosphane)Copper(I) Chloride]

“…On the basis of our earlier observations on dimeric species of the above-mentioned type, the coordination behavior (terminal or bridging mode) of each ligand seems to depend on the nature of the halogen present. In particular, formation of halogen-bridges has been found to be preferred for the ''soft'' iodine but not for the ''harder'' chlorine base, [7,8,9] whereas both bridging and terminal bonding modes were observed for bromo ligands [10,11] since bromide lies on the borderline between soft and hard. However, the information obtained so far is insufficient to establish the above supposition, so we now report on the synthesis and X-ray crystal structure of three novel copper(I) halide complexes in an attempt to obtain further insight into this problem.…”