TY - JOUR
T1 - Syntheses, structures and physical properties of transition metal-organic frameworks assembled from trigonal heterofunctional ligands
AU - Song, Shu Yan
AU - Song, Xue Zhi
AU - Zhao, Shu Na
AU - Qin, Chao
AU - Su, Sheng Qun
AU - Zhu, Min
AU - Hao, Zhao Min
AU - Zhang, Hong Jie
PY - 2012/9/14
Y1 - 2012/9/14
N2 - Six novel metal-organic frameworks (MOFs), {Mn(bpydb)(bpyHdbH)} n (1) {[Co 2(bpydb) 2](H 2O) 0.5} n (2), {[Ni 0.5(bpydbH)(H 2O)](DMF) 2} n (3), {[Cu 2(bpydb) 2](H 2O) 0.5} n (4), {Zn(bpyHdb) 2} n (5) and {[Cd 0.5(bpydb) 0.5(DMF)](H 2O)} n (6), were successfully synthesized by assembling transition metal salts with trigonal heterofunctional ligand 4,4′-(4,4′-bipyridine-2,6-diyl) dibenzoic acid (bpydbH 2) under hydrothermal and/or solvothermal conditions. Compound 1 features a rare 4-fold interpenetrating (3,5)-connected framework with hms-type topology. Isostructural compounds 2 and 4, constructed by M 2(COO) 4 secondary building units, exhibit a robust 3D framework with alb topological type in 2-fold interpenetrating mode. Compound 3 consists of 2D (4,4) networks, which are further assembled into the new topological framework with the symbol (5 3·6 2·8)(5 3·6 3) 2 through O-H⋯O interactions. Compound 5 manifests a novel 4-connected interpenetrating framework, constructed by 2D (4,4) layers and interbedded N-H⋯O interactions. Non-interpenetrating honeycomb networks are observed in compound 6, and further packed into a 3D framework featuring 1D channels. The magnetic susceptibility of compound 2 indicates antiferromagnetic interactions between cobalt ions. The photoluminescent properties of 5 and 6 were investigated in the solid state at room temperature.
AB - Six novel metal-organic frameworks (MOFs), {Mn(bpydb)(bpyHdbH)} n (1) {[Co 2(bpydb) 2](H 2O) 0.5} n (2), {[Ni 0.5(bpydbH)(H 2O)](DMF) 2} n (3), {[Cu 2(bpydb) 2](H 2O) 0.5} n (4), {Zn(bpyHdb) 2} n (5) and {[Cd 0.5(bpydb) 0.5(DMF)](H 2O)} n (6), were successfully synthesized by assembling transition metal salts with trigonal heterofunctional ligand 4,4′-(4,4′-bipyridine-2,6-diyl) dibenzoic acid (bpydbH 2) under hydrothermal and/or solvothermal conditions. Compound 1 features a rare 4-fold interpenetrating (3,5)-connected framework with hms-type topology. Isostructural compounds 2 and 4, constructed by M 2(COO) 4 secondary building units, exhibit a robust 3D framework with alb topological type in 2-fold interpenetrating mode. Compound 3 consists of 2D (4,4) networks, which are further assembled into the new topological framework with the symbol (5 3·6 2·8)(5 3·6 3) 2 through O-H⋯O interactions. Compound 5 manifests a novel 4-connected interpenetrating framework, constructed by 2D (4,4) layers and interbedded N-H⋯O interactions. Non-interpenetrating honeycomb networks are observed in compound 6, and further packed into a 3D framework featuring 1D channels. The magnetic susceptibility of compound 2 indicates antiferromagnetic interactions between cobalt ions. The photoluminescent properties of 5 and 6 were investigated in the solid state at room temperature.
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U2 - 10.1039/c2dt30826f
DO - 10.1039/c2dt30826f
M3 - Article
C2 - 22814798
AN - SCOPUS:84864981122
SN - 1477-9226
VL - 41
SP - 10412
EP - 10421
JO - Dalton Transactions
JF - Dalton Transactions
IS - 34
ER -