Assembly of three supramolecular compounds based on [P2Mo5O23]6− and Ni(II) complexes

• Published in: Journal of coordination chemistry Vol. 67; no. 3; pp. 522 - 532
• Main Authors: Song, Li, Yu, Kai, Su, Zhanhua, Wang, Chunxiao, Wang, Chunmei, Zhou, Baibin
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis 01.02.2014; Taylor & Francis Ltd
• Subjects: Electrocatalytic activity; Fluorescent properties; Ni(II) complex; Supramolecular compounds; unit
• ISSN: 0095-8972; 1029-0389
• DOI: 10.1080/00958972.2014.894994

Three supramolecular compounds based on [P 2 Mo 5 O 23 ] 6− and Ni(II)-bim, [Ni(bim) 3 ] 3 [P 2 Mo 5 O 23 ]·2H 2 O (1), [Ni(Hbim)(bim) 2 ] 4 [P 2 Mo 5 O 23 ] 2 ·3H 2 O (2), and [Ni(bim)(Hbim)(phen)] 2 [P 2 Mo 5 O 23 ]·7H 2 O (3) (bim = 2,2′-biimidazole, phen = 1,10-phenanthroline), have been synthesized under hydrothermal conditions and characterized by elemental analysis, single-crystal X-ray diffraction, IR, and TG. All the compounds show 3-D supramolecular networks constructed from weak interactions among free Ni(II) complex, water, and oxygens of [P 2 Mo 5 O 23 ] 6− . Compound 3 represents the first supramolecular example integrating {Ni(bim)(Hbim)(phen)} with Strandberg-type phosphomolybdate. The compounds display good electrocatalytic activity to reduce hydrogen peroxide and intense fluorescence properties in solution at room temperature. Three 3-D supramolecular networks constructed from weak interactions among free Ni(II) complex, water molecule, and oxygen atoms of [P 2 Mo 5 O 23 ] 6− polyanions have been synthesized. The compounds display good electrocatalytic activity to reduce hydrogen peroxide and intensive fluorescent properties in the solution at room temperature.