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Synthesis, Characterization and Properties of Two Novel Complexes Based on 2‐Aminopyridine and Polyoxometalates †
Author(s) -
Gong Yun,
Li YangGuang,
Li Hui,
Wang YongHui,
Hu ChangWen
Publication year - 2006
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200690216
Subject(s) - chemistry , polyoxometalate , protonation , lacunary function , crystallography , 2 aminopyridine , hydrogen bond , stereochemistry , medicinal chemistry , molecule , ion , catalysis , organic chemistry , mathematics , pure mathematics
Two novel complexes based on 2‐aminopyridine and polyoxometalates (POMs) formulated as (C 5 H 7 N 2 ) 6 ‐[PMo 11 V Mo VI O 40 (V IV O) 4 ]·H 2 O ( 1 ) and (C 5 H 7 N 2 ) 16 [P 2 W 18 O 61.5 ] 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, [PMo 11 V Mo VI O 40 (V IV O) 4 ] 6− in which four [V IV O 5 ] square pyramids cap the equatorial positions of Keggin core [PMo 11 V Mo VI O 40 ] 14− , linked together with six protonated 2‐aminopyridine via hydrogen bonding interactions. Dawson and lacunary Dawson POMs, [P 2 W 18 O 62 ] 6− and [P 2 W 17 O 61 ] 10− coexist in complex 2 , they link together with sixteen protonated 2‐aminopyridine via hydrogen bonding interactions. Complex 2 exhibits photochromic property.