Assembly and photocatalytic property of a Keggin -type POM -based complex constructed by a pyridyl -pyrazine amide ligand
ZENG Ling
BAI Xue
WANG Qing-lin
LIN Hong-yan
Abstract：A new pyridyl-pyrazine amide ligand ( pdya =N-( pyridin-3-yl) pyrazinamide ) has been designed and synthesized , then the Keggin -type polyoxometalate -based complex {H [ ( Hpdya ) 2 ( PMo12 O40 ) ]}n constructed by the pdya ligand was obtained in the hydrothermal condition .The structure of the title complex was characterized by the elemental analysis , IR spectra , thermogravimetric analysis and single crystal X-ray diffraction .Results reveal that the title complex is triclinic system with P 21/n space group , its formula is C20 H19 PMo12 N8 O42 , Mr =2225.68,V=2.6536(2) nm3 ,a=1.23920(6) nm,b=1.53750(7) nm,c=1.40440 (7) nm,β=97.3830(10)°,Z=2,Dc =2.784 g/cm3,μ=2.877 mm-1, F(000) =2098, Rint =0.0401, R=0.0749,wR=0.2187.The structural unit of the title complex is consist of the protonated pyridyl -pyrazine amide ligand Hpdya and inorganic [ PMo12 O40 ] 3-polyanions .The hydrogen -bonding interactions between the organic Hpdya ligands and [ PMo12 O40 ] 3-anions can lead to the formation of the one -dimensional supramolecu-lar chain.The title complex has good thermal stability and possesses the photocatalytic activities towards the deg -radation of methylene blue under UV irradiation .
Keywords：pyridyl-pyrazinamide ligandKeggin-type polyoxometalatehybrid materialhydrogen-bond-ing interactionsphotocatalytic activity
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 243-247 )