The helical structure induced by metal–organic complexes: synthesis and characterization of a novel layered vanadate complex containing double helical chains

Abstract

A novel two-dimensional inorganic–organic hybrid vanadate complex [Co(2,2′-bpy) 2V 3O 8.5] 1 (2,2′-bpy, 2,2′-bipyridine) has been hydrothermally synthesized and characterized by the elemental analyses, XPS spectra, TG analysis, IR spectrum and the single-crystal X-ray diffraction. Crystal data for 1: monoclinic, space group P2 1/c, a=15.612(3) Å, b=14.830(3) Å, c=10.548(2) Å, β=91.90(3)°, V=2440.8(8) Å 3, Z=4, and R 1[ I>2 σ( I)]=0.0367. The title compound consists of an unusual two-dimensional vanadate network grafted with [Co(2,2′-bpy) 2] 2+ complexes. Moreover, compound 1 contains left-handed and right-handed helical chains, which are built up from only vanadium-oxide building blocks and further interconnected to form the double helical chains.