Molecular heterometallic clusters [ReMoSL] ( = 2-3, L = py, etpy, tbp): negligible influence of the value on the crystal structures

The influence of the metal ratio on the geometric characteristics and crystal structures of heterometallic clusters with {Re 6− x Mo x Q 8 } cores was studied. For this purpose, nine new molecular cluster complexes of the type [Re 6− x Mo x S 8 L 6 ] ( x = 2, 3 or non-integer value between 2 and 3; L = pyridine, 4-ethylpyridine or 4- tert -butylpyridine) were synthesized. The compounds were obtained by one-step replacement of the cyanide apical ligands of [Re 6− x Mo x S 8 (CN) 6 ] 5−/4− cluster complexes with the corresponding organic compounds under solvothermal conditions. The crystal structures of all the obtained compounds were investigated by single-crystal X-ray diffraction analysis. Analysis of the crystal structures showed that clusters with the same apical ligands and different x values have similar geometries and form isostructural packings, demonstrating the formation of solid solutions. The influence of the metal ratio on the geometric characteristics and crystal structures of heterometallic clusters with {Re 6− x Mo x Q 8 } cores was studied. Complexes with the same apical ligands form isostructural packings and form the solid solutions.