Triruthenium clusters derived from the reactions of [Ru3(CO)12] with benzothiazole, pyrimidine-2-thione and benzimidazole-2-thione; X-ray structures of [Ru3(μ-H)(μ-2,3-η2-NSC7H4)(CO)10] and [Ru3(μ-H)(μ3-η2-SN2C4H3)(CO)9]

Coordination Polymers of Copper(I) Halides and Neutral Heterocyclic Thiones with New Coordination Modes

“…Pyrimidine-2-thione ( pymtH ) and the corresponding thiolate (pymt - ) can adopt different coordination modes (Chart ) to yield a variety of coordination complexes. Complexes of pyrimidine-2-thiolate have been found to coordinate to metals with coordination modes F , G , H , I , J , K , L , and M . Neutral pyrimidine-2-thione, however, always bind to the metal center exclusively via the monodentate coordination mode using the exocyclic sulfur in either terminal ( A ) or bridging mode ( B ) …”

Decarbonylation Reaction of [Os3(CO)10(μ-H)(μ-SN2C4H5)]: X-ray Structures of the Two Isomers of [Os3(CO)9(μ-H)(μ 3-η 2-SN2C4H5)]

“…Many of the resultant complexes are biologically important as they can be used as models for metal-centers in metalloproteins 30,31,32,33,34 and also possess different industrial applications such as anticorrosion and as accelerators in the rubber vulcanization process. 35 The reactions of trimetallic clusters with nitrogen and sulfur containing heterocycles such as 4-methylthiazole, 12 2,4,5-trimethylthiazole, 9 thiazole, 13,16 thiomorpholine, 14 thiazolidine, 14 2methyl-2-thiazoline, 10 benzothiazole, 15 pyrimidine-2-thiol 15 and pyridine-2-thiol 11 have been demonstrated by us. The neutral ligand 2-mercapto-1-methylimidazole can in principle coordinates both in the 'thione' and in the tautomeric 'thiol' form (−NH−C=S⇌−N=C−SH−NH−C=S⇌−N=C−SH) which gives rise to a wide range of coordination compounds with considerable structural diversity.…”

“…In recent years, the reactions of transition metal carbonyl clusters with heterocyclic ligands containing more than one hetero-atoms have been widely investigated. 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18 These reactions are markedly influenced by the structure of the heterocyclic ring, starting clusters and also by the reaction conditions employed. Trinuclear osmium clusters have proved to be useful system for modeling heterogeneous catalytic processes such as hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) which are associated with the cleavage of C-X bonds (X = S, N).…”

Investigations of 2-Thiazoline-2-thiol as a Ligand: Synthesis and X-ray Structures of [Mn2(CO)7(μ-NS2C3H4)2] and [Mn(CO)3(PPh3)(κ 2-NS2C3H4)]

“…The study of the reactivity of nitrogen and sulfur containing small heterocyclic organic molecules towards transition metal carbonyl clusters has attracted considerable interest because such ligands frequently stabilizes the metal cluster framework by serving as chelating or bridging ligands 1,2,3,4,5 and also due to their potential applicability in modeling hydrodenitrogenation (HDN) and hydrodesulfurization (HDS) processes. 1,2,3,4,5,6,7 These reactions are usually accompanied by C-H, N-H, S-H and C-N bonds activation of the heterocyclic ligand and markedly influenced by the structure of the heterocycle as well as the reaction conditions and starting complexes. We have previously investigated the reactions of pyridine-2-thiol, 8 pyrimidine-2-thiol, 8 thiazole, 9,10 4-methylthiazole, 11 thiazolidine, 7 thiomorpholine, 7 benzothiazole, 6 and benzimidazole-2-thiol 6 with osmium and ruthenium carbonyl clusters and observed that the type of products obtained in these reactions are remarkably influenced by the intrinsic reactivity of the metal carbonyl clusters, the heterocyclic ligands and the reaction conditions.…”