Details

Autor(en) / Beteiligte

• Fan, Liming
• Zhang, Yujuan
• Liang, Jinfang
• Wang, Xiaoqing
• Lv, Hongxiao
• Wang, Jiang
• Zhao, Li
• Zhang, Xiutang

Titel

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

Ist Teil von

• CrystEngComm, 2018, Vol.20 (33), p.4752-4762

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Based on the designed π-conjugated aromatic pentacarboxylate of 3,5-di(2′,4′-dicarboxylphenyl)benozoic acid (H 5 DDB) 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, {Co 2 (HDDB)(bib) 1.5 (H 2 O) 2 ]·H 2 O} n ( 1 ), {[Mn 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)·0.5H 2 O} n ( 2 ), {[Cd 2 (HDDB)(bib) 1.5 (H 2 O)]·2.5H 2 O} n ( 3 ), {[Cd 2 (HDDB)(m-bimb)]·H 2 O} n ( 4 ), and {[Cd 2 (DDB)(p-bimb)]·2.5H 2 O·0.5(p-H 2 bimb)} n ( 5 ), have been obtained and characterized. Complex 1 is a 3D 3-fold interpenetrating (3,4)-c {8 3 } 2 {8 5 ·9}- vtx net. Based on the binuclear {Mn 2 (COO) 2 } SBUs, as well as the trinuclear {Mn 3 (COO) 4 (μ 2 -H 2 O) 2 } SBUs, complex 2 shows a 3D 3,4,6-c 3,4,6T10 net with a point symbol of {3·7 2 } 2 {3 2 ·7 3 ·8}{3 2 ·7 6 ·8 6 ·10}. Complex 3 displays an unprecedented 3D (3,4,4)-c net with a point symbol of {6·8 2 } 2 {6 4 ·8 2 } 2 {8·10 4 ·12} based on the binuclear {Cd 2 (COO) 4 } SBUs. Complex 4 shows an interesting 3D (3,10)-c {4 10 ·6 32 ·8 3 }{4 3 } 2 net based on the quadrilateral tetranuclear {Cd 4 (COO) 8 } SBUs. Complex 5 exhibits a linear tetranuclear {Cd 4 (COO) 4 } SBU-based 3D (4,10)-c deh1 net with a point symbol of {3·4 5 } 2 {3 4 ·4 12 ·5 10 ·6 14 ·7 3 ·8 2 }. 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 (CrO 4 2− and Cr 2 O 7 2− anions) in aqueous solution.