Abstract
Six novel coordination polymers, namely, [Cu1.5(H2L)0.5(H4L)0.5(bibp)1.5]·3H2O (1), [Zn1.5L0.5(bib)(H2O)]·4H2O (2), [Zn1.5L0.5(bib)1.5]·DMF (3), [Co0.5(H4L)0.5(bibpip)(H2O)]·3H2O (4), [Zn(H2L)0.5(tip)] (5), [Cu(H4L)0.5(H6L)0.5(tip)(H2O)]·2H2O (6), [H6L=p-terphenyl-2,2″,2′′′,5,4″,4′′′-hexcarboxylic acid, bibpip=1,4-bis(4-(1H-imidazol-l-yl)benzyl)piperazine, bib=1,4-bis(imidazolyl)butane], tib=1,3,5-tris(1-imidazolyl)benzene, bibp=4,4′-bis(imidazol-1-yl)biphenyl, have been synthesized under solvothermal and hydrothermal conditions. Their structures have been characterized by single-crystal X-ray diffraction analysis, elemental analysis, Infrared spectroscopy and thermogravimetric analysis. Compound 1 exhibits an infinite 3D structure with (52·62·7·8)(53·6·72) topology. Compound 2 features an unusual structure exhibiting (3,4,6)-connected 3D framework with (52·64)(52·6)2(54·66·72·8·92) topology. Compound 3 shows (4,6)-connected 3D framework with (52·6·7·82)2(55·7)(56·62·74·83) topology. Compound 4 views of 2D sheets. Compound 5 exhibits an unusual two-fold interpenetrating 3D framework with (64·82)(66)2 topology. Compound 6 shows (3,4)-connected binodal 2D net with the (42·6)(42·63·8) topology. Their photochemical properties were measured.
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