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A series of coordination polymers based on terphenyl tetracarboxylates and bis-pyridyl ligands with water vapor sorption properties

机译:基于三羧酸四苯酯和双吡啶基配体的一系列配位聚合物,具有水蒸气吸附特性

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Six new coordination polymers, namely, {[Mn2(L1)(bpfp)(H2O)2]·6H2O·(CH3OH)}n (1), {[Mn43-O)2(L1)2(bpe)2(H2O)2]·2H2O}n (2), [Ni(HL1)(Hbpmp)(H2O)2]n (3), [Co22-OH)(HL1)(bpmp)(H2O)4]n (4), {[Co2(L2)(bpfp)(H2O)2]·4H2O}n (5), {[Co2(L2)2(bpe)2(H2O)2·2H2O]·(NH4)4}n (6) (H4L1 = [1,1′:4′,1′′-terphenyl]-2,2′′,5,5′′-tetracarboxylic acid, H4L2 = [1,1′:4′,1′′-terphenyl]-3,3′′,5,5′′-tetracarboxylic acid, bpfp = bis(4-pyridylformyl)piperazine, bpe = 1,2-bis(pyridin-4-yl)ethane and bpmp = N,N′-bis(4-pyridyl)piperazine) were synthesized under hydrothermal conditions by terphenyl tetracarboxylates, bis-pyridyl ligands and transition metal salts. These six complexes were characterized by elemental analysis, infrared (IR) spectroscopy, thermogravimetric analysis (TGA), single-crystal X-ray diffraction, powder X-ray diffraction (PXRD) and fluorescence spectroscopy. Complexes 1 and 5 possess three-dimensional (3D) (4,6)-connected networks with {43·63}2{46·66·83} and {44·610·8}{44·62} topologies, respectively. Complexes 2–4 and 6 feature two-dimensional (2D) networks, which are expanded into 3D supramolecular frameworks via hydrogen bonding interactions. Desorption of lattice water molecules in complexes 1 and 2 was analyzed, and the values of water vapor uptake are 15.17 mL g?1 and 27.24 mL g?1, respectively.
机译:六个新的配位聚合物,即{[Mn 2 (L1)(bpfp)(H 2 O) 2 ]·6H 2 O·(CH 3 OH)} n (1),{[Mn 4 ( μ 3 -O) 2 (L1) 2 (bpe) 2 (H 2 O) 2 ]·2H 2 O} n (2), [Ni(HL1)(Hbpmp)(H 2 O) 2 ] < em> n (3),[Co 2 (μ 2 < / small> -OH)(HL1)(bpmp)(H 2 O) 4 ] n (4),{[Co 2 (L2)(bpfp)(H < small> 2 O) 2 ]·4H 2 O } n (5),{[ Co 2 (L2) 2 (bpe) 2 (H 2 O) 2 ·2H 2 < / small> O]·(NH 4 4 } n (6)(H 4 L1 = [1,1':4',1''-三联苯]- 2,2',, 5,5'-四羧酸,H 4 L2 = [1,1':4',1''-三联苯] -3 ,3',5,5''-四羧酸,bpfp =双(4-吡啶基甲酰基)哌嗪,bpe = 1,2-双(吡啶-4-基)乙烷,bpmp = N 在水热条件下,通过四羧酸三苯酯,双吡啶基配体和过渡金属盐合成了 N '-双(4-吡啶基)哌嗪)。通过元素分析,红外(IR)光谱,热重分析(TGA),单晶X射线衍射,粉末X射线衍射(PXRD)和荧光光谱对这6种配合物进行了表征。配合物1和5具有3维(3D)(4,6)连接的网络,其中具有{4 3 ·6 3 } 2 {4 6 ·6 6 ·8 3 }和{4 4 ·6 10 < / sup> ·8} {4 4 ·6 2 }拓扑。配合物2–4和6具有二维(2D)网络,通过氢键相互作用将其扩展为3D超分子框架。分析了配合物1和2中晶格水分子的解吸,水蒸气吸收值为15.17 mL g ?1 和27.24 mL g ?1

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