Neutral and Cationic Hexanuclear Rhenium Phosphine Clusters with μ3-(Phosphido-Chalcogenido), μ3-(Arsenido-Chalcogenido), and μ3-(Imido or Oxo-Chalcogenido) Hetero Ligand Shells
作者:Andrea Decker、Falk Simon、Kamal Boubekeur、Dieter Fenske、Patrick Batail
DOI:10.1002/(sici)1521-3749(200001)626:1<309::aid-zaac309>3.0.co;2-c
日期:2000.1
Reactions of dry THF/MeCN solutions of Ca[(Re6S6Cl2i)-Cl-i(Cl-a)(6)] with silylated derivatives E(SiMe3)(2) (E = PhAs, PSiMe3, HN, O, S) and addition of trialkylphosphine PPr3 afford in high yields and at room temperature either the neutral clusters [(Re6S6X2i)-X-i(PPr3)(6)(a)] (1: X = As, 2: X = P) or the ionic compounds [(Re6S6X2i)-X-i(PPr3)(6)(a)](2+).[Re6S6Cl8](2-) (3: X = NH, 4: X = 0, 5: X = S). The compounds 1-5 were characterised by X-ray crystal structure analysis. A di-substitution reaction occurs on the ((Re6S6Cl2i)-Cl-i)(4+) cluster core, where the two inner mu(3)-chloro ligands Cl-i are substituted by X (X = As, P, NH, O, S) and all six terminal chloro ligands Cl-a are exchanged by terminal PPr3-ligands.