A new multi-cobalt-substituted C-shaped polyoxotungstogermanate, [((CoOH2)Co2GeW9O_(34))2(GeW6O_(26))]~(20-)

摘要

A new multi-cobalt-substituted polyoxogermanotungstate Na_(20)[((CoOH2)Co2GeW9O_(34))2(GeW6O_(26))]· 47H2O has been synthesized and characterized by IR spectroscopy, UV electronic and luminescent spectroscopy, elemental analysis and single-crystal X-ray diffraction. Polyanion [((CoOH2)Co2Ge-W9O_(34))2(GeW6O_(26))]~(20-) consists of two [B-α-(CoOH2)Co2GeW9O_(34)]~(4-) units linked via a unique B-type hexavacant GeW6O_(26)~(12-) fragment, leading to a C-shaped structure with C_(2v) symmetry. This is the first report of the C-shaped multi-cobalt-substituted polyoxotungstogermanate.