NOVEL CRYSTAL STRUCTURES OF POTASSIUM SALTS OF CHALCOHYDROXO CLUSTER COMPLEXES [Re6Q8(OH)6]4– (Q = S or Se)
K. A. Brylev
Keywords: octahedral cluster, rhenium, synthesis, crystal structure
Abstract
Potassium salts of chalcohydroxo rhenium cluster complexes [Re6Q8(OH)6]4– (Q = S or Se) with the composition K4[Re6S8(OH)6]×4H2O (1) and K4[Re6Se8(OH)6]×5H2O (2) are produced by evaporation of the corresponding strongly alkaline aqueous solutions. The composition of the compounds is determined by the single crystal X‑ray diffraction study. The compounds crystallize in the triclinic space group P1– with the following unit cell parameters: a = 8.408(2) Å, b = 9.096(2) Å, c = 9.222(2) Å, α = 95.110(4)°, β =107.085(4)°, γ = 113.026(4)°, V = 603.5(3) Å 3, Z = 1, dx = 4.689 g/cm 3 (for 1) and a = 8.782(3) Å, b = 9.155(4) Å, c = 9.325(4) Å, α = 105.481(7)°, β = 109.266(6)°, γ = 99.104(6)°, V = 656.6(4) Å 3, Z = 1, dx = 5.305 g/cm 3 (for 2).
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