Abstract
A rare monocapped trivacant Keggin fragment [A-α-AsIIIAsVMo9O34]6– has been captured and an organic-inorganic hybrid arsenomolybdate (H2en)[Ni(en)2(H2O)]{[Ni(en)2][AsIIIAsVMo9O34]}∙3H2O (1) was obtained under hydrothermal conditions. The structure of 1 was determined by X-ray single-crystal diffraction and further characterized by IR spectroscopy, X-ray powder diffraction (XRPD), scanning electron microscope with energy dispersive X-ray (EDX-SEM) and X-ray photoelectron spectroscopy (XPS). Single-crystal structural analysis indicates that 1 contains the peculiar monocapped trivacant [A-α-AsIIIAsVMo9O34]6– fragment derived from the rare trivacant Keggin type [A-α-AsVMo9O34]9– unit capped by a triangular pyramidal {AsO3} group. 1 represents the first Ni-substituted inorganic-organic arsenomolybdate containing the [A-α-AsIIIAsVMo9O34]6– subunit.
Acknowledgements
This work was financially supported by the Natural Science Foundation of China, Special Research Fund for the Doctoral Program of Higher Education, Innovation Scientists and Technicians Troop Construction Projects of Henan Province, Natural Science Foundation of Henan Province.