Self-assembly of supramolecular networks based on biphosphopentamolybdate and copper–organic units

• Published in: Solid state sciences Vol. 13; no. 2; pp. 417 - 421
• Main Authors: Su, Zhanhua, Zhao, Zhifeng, Zhou, Baibin, Cai, Qinghai, Wang, Qun
• Format: Journal Article
• Language: English
• Published: Issy-les-Moulineaux Elsevier Masson SAS 01.02.2011; Elsevier Masson
• Subjects: Biphosphopentamolybdate; Condensed matter: structure, mechanical and thermal properties; Copper complexes; Cross-disciplinary physics: materials science; rheology; Crystal structure; Diffraction; Electrochemistry; Exact sciences and technology; Hydrogen bonding; Infrared radiation; Materials science; Methods of nanofabrication; Organic compounds; Other materials; Physics; Pillars; Self assembly; Specific materials; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Supramolecular; Two dimensional; X-rays; Electrochemistry; Biphosphopentamolybdate; Supramolecular; Copper complexes; Metallates; Weak interactions; Polyanion; Hybrid material; Organometallic compounds; Thermogravimetry; Bipyridines; Pillared structure; XRD; Hydrogen 1; Self-assembly; Electrochemical properties; Hydrothermal synthesis; Hydrogen bonds; Copper iodide; Supramolecular structure; Copper; X-ray diffraction analysis; Crystal structure
• ISSN: 1293-2558; 1873-3085
• DOI: 10.1016/j.solidstatesciences.2010.12.004

Two polyoxometalates (POMs)-based hybrid supramolecular materials have been synthesized based on biphosphopentamolybdate and copper–organic units under hydrothermal conditions, namely, [(HPO4) 2Mo 5O 15][Cu I(4,4′-bipy)] 2[Cu II(en) 2]·6H 2O ( 1) and [(HPO 4) 2Mo 5O 15][Cu I(4,4′-bipy)] 4·6H 2O ( 2) (en = ethylenediamine and 4,4′-bipy = 4,4′-bipyridine). Their crystal structures have been characterized by elemental analysis, IR, thermal gravimetric analysis (TGA), and single-crystal X-ray diffraction analysis. The novel 2D supramolecular sheet is formed via weak copper–oxygen interaction and hydrogen bonding in 1. The fascinating structural feature of 2 is that the biphosphopentamolybdate polyanion acts as a pillar to link Cu I centers and shows six-connected nodes. The electrochemical behaviors of hybrid materials have been studied in detail. [Display omitted]