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Issue 33, 2018
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Structural diversity, magnetic properties, and luminescence sensing of five 3D coordination polymers derived from designed 3,5-di(2′,4′-dicarboxylphenyl)benozoic acid

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Abstract

Based on the designed π-conjugated aromatic pentacarboxylate of 3,5-di(2′,4′-dicarboxylphenyl)benozoic acid (H5DDB) and bis(imidazole) ancillary linkers (bib = 1,4-bis(imidazol-1-yl)benzene, m-bimb = 1,3-bis(imidazol-1-ylmethyl)benzene, p-bimb = 1,4-bis(imidazol-1-ylmethyl)benzene), five 3D coordination polymers, namely, {Co2(HDDB)(bib)1.5(H2O)2]·H2O}n (1), {[Mn2.5(H2DDB)(HDDB)(bib)0.52-H2O)(H2O)1.5]·(Hbib)·0.5(H2bib)·0.5H2O}n (2), {[Cd2(HDDB)(bib)1.5(H2O)]·2.5H2O}n (3), {[Cd2(HDDB)(m-bimb)]·H2O}n (4), and {[Cd2(DDB)(p-bimb)]·2.5H2O·0.5(p-H2bimb)}n (5), have been obtained and characterized. Complex 1 is a 3D 3-fold interpenetrating (3,4)-c {83}2{85·9}-vtx net. Based on the binuclear {Mn2(COO)2} SBUs, as well as the trinuclear {Mn3(COO)42-H2O)2} SBUs, complex 2 shows a 3D 3,4,6-c 3,4,6T10 net with a point symbol of {3·72}2{32·73·8}{32·76·86·10}. Complex 3 displays an unprecedented 3D (3,4,4)-c net with a point symbol of {6·82}2{64·82}2{8·104·12} based on the binuclear {Cd2(COO)4} SBUs. Complex 4 shows an interesting 3D (3,10)-c {410·632·83}{43}2 net based on the quadrilateral tetranuclear {Cd4(COO)8} SBUs. Complex 5 exhibits a linear tetranuclear {Cd4(COO)4} SBU-based 3D (4,10)-c deh1 net with a point symbol of {3·45}2{34·412·510·614·73·82}. A variable temperature magnetic susceptibility investigation indicated that antiferromagnetic interactions exist between the neighbouring metal ions in 1 and 2. Fluorescence measurements showed that 3–5 are promising luminescence sensors for the detection of Cr(VI) anions (CrO42− and Cr2O72− anions) in aqueous solution.

Graphical abstract: Structural diversity, magnetic properties, and luminescence sensing of five 3D coordination polymers derived from designed 3,5-di(2′,4′-dicarboxylphenyl)benozoic acid

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Publication details

The article was received on 26 May 2018, accepted on 10 Jul 2018 and first published on 11 Jul 2018


Article type: Paper
DOI: 10.1039/C8CE00877A
Citation: CrystEngComm, 2018,20, 4752-4762
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    Structural diversity, magnetic properties, and luminescence sensing of five 3D coordination polymers derived from designed 3,5-di(2′,4′-dicarboxylphenyl)benozoic acid

    L. Fan, Y. Zhang, J. Liang, X. Wang, H. Lv, J. Wang, L. Zhao and X. Zhang, CrystEngComm, 2018, 20, 4752
    DOI: 10.1039/C8CE00877A

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