111765-70-9Relevant academic research and scientific papers
Systematic synthesis of mixed-metal clusters via capping reactions. Characterization of a set of octanuclear carbido clusters involving rhenium and various platinum metals
Henly, Timothy J.,Shapley, John R.,Rheingold, Arnold L.,Geib, Steven J.
, p. 441 - 448 (1988)
The cluster [Re7C(CO)21]3- reacts with a variety of platinum metal based electrophiles to afford the new mixed-metal clusters [Re7C(CO)21MLn]2-, where MLn = Rh(CO)2, Rh(CO)(PPh3), Rh(COD), Ir(COD), Pd(C3H5), Pt(C4H7), and Pt(CH3)3. These complexes have been isolated as salts with various large cations and have been characterized by IR (νCO), 1H NMR, and fast atom bombardment mass spectroscopies. Variable-temperature 13C NMR spectroscopic studies of selected complexes show that each of these compounds adopts a 1,4-bicapped octahedral geometry in solution. This observation is in accord with the solid-state structure of [PPN]2[Re7C(CO)21Pt(C4H 7)], which has been determined by X-ray crystallography. The compound crystallizes in the monoclinic space group P21/n, with a = 13.412 (5) A?, b = 18.095 (6) A?, c = 20.686 (3) A?, and β = 107.21 (2)°, Z = 2, and the structure has been refined to R(F) = 0.0618 and R(wF) = 0.0688. Cyclic voltammetry studies reveal two oxidation waves for each compound, with E1/2 strongly dependent on MLn.
