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), {[Mn_2.5(H₂DDB)(HDDB)(bib)_0.5(μ₂-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)₄(μ₂-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.

中文翻译：

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从设计的3,5-二（2'，4'-二羧基苯基）苯甲酸生成的5种3D配位聚合物的结构多样性，磁性和发光感测†

基于设计的3,5-二（2'，4'-二羧基苯基）苯甲酸（H ₅ DDB）和双（咪唑）辅助接头的π-共轭芳族五羧酸酯（bib = 1,4-bis（imidazol-1 -基）苯，间-基= 1,3-双（咪唑-1-基甲基）苯，对-基= 1,4-双（咪唑-1-基甲基）苯，五个3D配位聚合物，即{ CO ₂（HDDB）（BIB）_1.5（H ₂ O）₂ ]·H ₂ ö} _ñ（1），{[锰_2.5（H ₂ DDB）（HDDB）（BIB）_0.5（μ ₂ -H ₂ O） （H ₂ O）_1.5 ]·（Hbib）·0.5（H ₂ bib）·0.5H₂ O} _n（ 2），{[Cd ₂（HDDB）（围嘴） _1.5（H ₂ O）]·2.5H ₂ O} _n（ 3），{[Cd ₂（HDDB）（m-bimb）]·已经获得并表征了H ₂ O} _n（ 4）和{[Cd ₂（DDB）（p-bimb）]·2.5H ₂ O·0.5（pH ₂ bimb）} _n（ 5）。复合体1是3D 3倍互穿（3,4）-c {8 ³ } ₂ {8 ⁵ ·9} -vtx网。基于所述双核锰{ ₂（COO）₂ }的SBU，以及三核{的Mn ₃（COO）₄（μ ₂ -H ₂ O）₂ }的SBU，复杂2示出了3D 3,4,6-C 3,4,6T10网，其点符号为{3·7 ² } ₂ {3 ² ·7 ³ ·8} {3 ² ·7 ⁶ ·8 ⁶ ·10}。复合体3显示了前所未有的3D（3,4,4）-c网络，其点符号为{6·8 ² } ₂ {6 ⁴ ·8 ² } ₂基于双核{Cd ₂（COO）₄ } SBU的{8·10 ⁴ ·12} 。络合物4显示了基于四边形四核{Cd ₄（COO）₈ } SBU的有趣的3D（3,10）-c {4 ¹⁰ ·6 ³² ·8 ³ } {4 ³ } ₂网。配合物5表现出基于线性四核{Cd ₄（COO）₄ } SBU的3D（4,10）-c deh1网，其点符号为{3·4 ⁵ } ₂ {3 ⁴ ·4 ¹² ·5 ¹⁰ ·6 ¹⁴·7 ³ ·8 ² }。可变温度磁化率研究表明，在1和2中的相邻金属离子之间存在反铁磁相互作用。荧光测量表明3–5是用于检测水溶液中Cr（VI）阴离子（CrO ₄ ^2-和Cr ₂ O ₇ ^2-阴离子）的有前途的发光传感器。