In situ synthesis of an inorganic–organic hybrid based on a molybdenum-oxo chain: [Cu₂(pz)(Mo₃O₁₀)]_n

Abstract

A polyoxomolybdate, [Cu₂(pz)(Mo₃O₁₀)] _n (pz = pyrazine) (1), has been synthesized hydrothermally and characterized by elemental analysis, IR, X-ray photoelectron spectra, and thermogravimetric analysis. Single-crystal X-ray diffraction demonstrates that 1 has a 3-D architecture constructed by combination of {Mo₃O₁₀} units and [Cu₂(pz)]²⁺. All the terminal oxygen atoms of the polyoxomolybdate are coordinated by univalent copper. Pyrazine came from in situ decarboxylation of 2-pyrazinecarboxylic acid and Cu⁺ from the in situ reduction of Cu²⁺ during the hydrothermal synthesis.

Keywords:

• Polyoxomolybdate
• In situ reaction
• Decarboxylation
• Deoxidization

Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (20731002, 10876002, 21173021, and 2081004), the 111 Project (B07012), the Program of Cooperation of the Beijing Education Commission (20091739006), Specialized Research Fund for the Doctoral Program of Higher Education (200800070015), and Beijing Municipal Science & Technology Commission (Z09010300820902).