The first coordination polymers based on octahedral hexahydroxo rhenium cluster complexes [Re6Q8(OH)6]4- (Q = S, Se) and alkaline earth metal cations

Abstract

Seven novel octahedral cluster compounds [{Mg(H2O) 5}2-Re6S8(OH)6] ·6H2O (1), [{Ca(H2O)3} 2Re6S8(OH)6] (2), [{Ca-(H 2O)3}2Re6Se8(OH) 6] (3), [{Sr2(H2O)10}Re 6S8(OH)6]·6H2O (4), [{Sr 2(H2O)10}Re6Se8(OH) 6]·6H2O (5), [{Ba2(H2O) 8}-Re6S8(OH)6] (6), and [{Ba 2(H2O)8}Re6Se8(OH) 6] (7) were prepared by the direct reaction of K4[Re 6S8(OH)6]·8H2O and K 4[Re6Se8(OH)6]·8H 2O with the cations of the elements of main group II. All compounds have been characterized by single crystal X-ray diffraction. Compound 1 has a discrete molecular structure, compounds 4 and 5 have a one-dimensional chain structure, and compounds 2, 3, 6, and 7 crystallize in two different types of two-dimensional layered structure. This sulfur containing series has been characterized by luminescent spectroscopy. © Wiley-VCH Verlag GmbH & Co. KGaA, 2006.