Hydrothermal Syntheses, Crystal Structures, and Thermal Gravimetric Analysis (TGA) of Two Inorganic-Organic Hybrid Materials: [bphx][Mo₆O₁₉] and [bphx]₃[H₂W₁₂O₄₀]·3H₂O

Abstract

Two novel organic-inorganic hybrid polyoxometalate supra molecular compounds have been prepared through hydrothermal synthesis methods, namely [bphx][Mo₆O₁₉] (1) and [bphx]₃[H₂W₁₂O₄₀]·3H₂O (2) [bphx = 1,6-bis(pyridinium)hexane], and characterized by single-crystal X-ray diffraction, IR spectroscopy, and thermal gravimetric analysis (TGA). The results indicate that these compounds are composed of isolated organic cation and inorganic anion by electrostatic interaction. The molybdenum oxide cluster [Mo₆O₁₉]²⁻ anion in compound 1 is Lindqvist structure, and the tungsten oxide cluster anion in compound 2 is the classical Keggin-type.

Supplemental materials are available for this article. Go to the publisher's online edition of Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry to view the supplemental file.

Keywords:

• hydrothermal synthesis
• Lindqvist structure
• polyoxometalates
• spectroanalysis

Acknowledgments

The author acknowledges the NSFC (Nos.21171148, J1103309).