Structure and properties research of two supramolecular compounds synthesis by Keggin -type polyoxometalates and imidazole ligands
FU Yubo
ZHAO Yingying
TIAN Aixiang
Abstract：Under the hydrothermal conditions , Keggin-type polyoxometalates anion was used as the inor-ganic building block, and the flexible ligands 1,1-(bis-3-imidazoles) ether (L1) and 1,1′-(1,4-bu-tane ) ( Imidazole ) ( L2 ) as an organic building block , supramolecular compounds of two polyoxometallates were obtained.Compound 1 [H4(L1)2(SiMo12O40)]· 2H2O and compound 2 [H12(PW12O40)3(L2)4].The two compounds were characterized by single crystal X -ray diffraction, elemental analysis and infrared spectrum .A-nalysis shows that compound 1 belongs to the anorthic system , space group P -1 .Compound 2 belongs to the monoclinic, space group P 21 /n.The unit cell parameters of compound 1:a=11.217(5)?,b=11.749(5)?, c=11.815(5)?,α=102.971(5)°,β=98.134(5)°,γ=115.631(5)°,V=2164.3(14)?3,Z=1,R1 =0.0485,ωR2 =0.0681.Compourd 2, a=11.776(5)?,b=20.062(5)?,c=34.500(5)?,α=90.000(5)°,β=94.500 (5)°,γ=90.000(5)°,V=8126(4)?3,Z=2,R1 =0.0373,ωR2 =0.0999.In compound 1, the ligands form a double-support structure on both sides of Keggin type polyacid anion .In compound 2, the ligands are surroun-ded by polyanions , showing a variety of existing states .Both compounds formed supramolecular frameworks through abundant hydrogen bonding .
Keywords：polyoxometalatesupramolecular frameworkhydrothermal syntheseselectrochemistry
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 24-30 )