Synthesis, Characterization and Properties of Two Novel Complexes Based on 2-Aminopyridine and Polyoxometalates

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2006,（9）
• 页码范围: 1148-1153
• 页数: 6页
• 语种: 英文

摘要

Two novel complexes based on 2-aminopyridine and polyoxometalates (POMs) formulated as (C5H7N2)6-[PMoⅤ11MoⅥO40(VⅣO)4] ·H2O (1) and (C5H7N2)16[P2Wi8O61.5]2 (2) were hydrothermally synthesized and structurally characterized by elemental analysis, ICP, IR, UV-Vis, TG, ESR and single crystal X-ray diffraction methods.Complex 1 consists of a novel tetra-capped Keggin POMs, [PMoⅤ11MoⅥO40(VⅣO)4]6-, in which four [VⅣO5]square pyramids cap the equatorial positions of Keggin core [PMoⅤ11MoⅥO40]14-, linked together with six protonated 2-aminopyridine via hydrogen bonding interactions. Dawson and lacunary Dawson POMs, [P2W18O62]6- and [P2W17O61]10- coexist in complex 2, they link together with sixteen protonated 2-aminopyridine via hydrogen bonding interactions. Complex 2 exhibits photochromic property.