Synthesis, structural characterisation, and cytotoxicity studies of Bi, W, and Mo containing homo- and hetero-bimetallic polyoxometalates

摘要

Three new and different homo- and hetero-bimetallic polyoxometalate (POM) species have been synthesised by simple one-pot synthetic methods utilising naturally occurring bismite (Bi2O3) (or Bi(NO3)(3)center dot 5H(2)O) and aryl sulfonic acids. The POM species isolated are (NH4)(14)[Bi2W22O76]center dot 14H(2)O (1 center dot 14H(2)O), (NH4)[Bi(DMSO)(7)][Mo8O26]center dot H2O (2 center dot H2O) and [(NH4)(4)(Mo36O108(OH)(4)center dot 16H(2)O)]center dot 45H(2)O (3 center dot 45H(2)O). The compounds have been characterised by X-ray crystallography, energy dispersive X-ray spectroscopy (EDX), powdered X-ray diffraction (PXRD), mass spectrometry (ESI-MS), Raman spectroscopy, thermogravimetric (TGA) and ICP analyis. In vitro cytoxicity and proliferation studies conducted on 1 and 3, highlight the low toxicity of these species.