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

A novel two-dimensional inorganic–organic hybrid vanadate complex [Co(2,20-bpy)2V3O8.5] 1 (2,20-bpy, 2,20-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 P21/c, aZ15.612(3) A ° , bZ14.830(3) A ° , cZ10.548(2) A ° , bZ91.90(3)8, VZ2440.8(8) A ° 3, ZZ4, and R1[IO2s(I)]Z0.0367. The title compound consists of an unusual two-dimensional vanadate network grafted with [Co(2,20-bpy)2]2C 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. q 2004 Elsevier B.V. All rights reserved.