Syntheses,Crystal Structures and Magnetic Properties of Cobalt(Ⅱ) and Manganese(Ⅱ) Coordination Polymers Constructed from 5-(Pyridin-4-yl)Isophthalate Ligands

Two coordination polymers, namely {[Co(L)(H2O)]·H2O}n(1) and [Mn(L)(phen)]n(2, H2L = 5-(pyridin-4-yl)isophthalic acid, phen = 1,10-phenanthroline), have been hydrothermally synthesized and characterized by elemental analysis, IR, TG, magnetic properties, and single-crystal X-ray diffraction. 1 belongs to the triclinic system, space group P1 with a = 7.2188(7), b = 10.0835(8), c = 10.2069(7) ?, α = 113.713(7), β = 99.490(7), γ = 104.516(8)o, V = 628.24(9) ?3, C13H11NCoO6, Mr = 336.16, Z = 2, Dc = 1.777 Mg/m3, μ(MoKα) = 1.395 mm–1, F(000) = 342, S = 1.041, the final R = 0.0381 and wR = 0.0819 for 3744 observed reflections(I 2σ(I)) and R = 0.0448 and wR = 0.0874 for all data. 2 belongs to the monoclinic system, space group P2/c with a = 12.9185(3), b = 10.4343(2), c = 31.7650(6)?, β = 101.282(2)o, V = 4199.08(13)?3, C50H30N6Mn2O8, Mr = 952.68, Z = 4, Dc = 1.507 Mg/m3, μ(MoKα) = 5.447 mm–1, F(000) = 1944, S = 1.128, the final R = 0.1003 and wR = 0.1052 for 8247 observed reflections(I 2σ(I)) and R = 0.2595 and wR = 0.2625 for all data. Single-crystal X-ray diffraction studies show that compound 1 features a 2D sheet structure based on a dicobalt(II) subunit, which is further extended into a 3D metal-organic supramolecular framework by O–H···O hydrogen bond. Compound 2 also possesses a 2D sheet, which is held together into a 3D supramolecular architecture via C–H···O hydrogen bond and π-π stacking interactions. Magnetic studies for compound 2 show antiferromagnetic coupling between the adjacent metal centers, with J = –11.8 cm–1 and g = 2.12 for 2.     

2-丙基-1H-4, 5-咪唑二酸构筑的混核锌-钕配位聚合物的合成、晶体结构及磁性质

通过水热方法,合成了一个杂金属的配位聚合物{[NdZn(H₂pimda)₃(Hpimda)(H₂O)₂]·H₂O}_n(1),(H₃pimda=2-丙基-1H-4,5-咪唑二酸),并对其结构和磁性质进行了研究。结构分析结果表明配合物1的晶体属于单斜晶系,P2₁/c空间群。配合物1是由配体2-丙基-1H-4,5-咪唑二酸连接而成的二维层状结构,该二维层通过氢键延伸为三维超分子结构。磁性研究表明,配合物1中相邻钕离子间存在着反铁磁相互作用。     

以2,4,4’-联苯三羧酸及2,2’-联吡啶构筑的三维钴(Ⅱ)配位聚合物的合成、晶体结构及磁性质

通过水热方法,以2,4,4’-联苯三羧酸（H₃btc）和2,2’-联吡啶（2,2’-bpy）与CoCl₂·6H₂O反应,合成了1个具有三核钴单元的三维配位聚合物[Co_1.5（btc）（2,2’-bpy）_0.5（2H₂O）]_n,并对其结构和磁性质进行了研究。结构分析结果表明该聚合物的晶体属于单斜晶系,I2/a空间群,a=1.7744（4）nm,b=1.1423（2）nm,c=1.8908（4）nm,β=105.18（3）°,V=3.6985（13）nm³,D_c=1.745g·cm^-3,Z=8,R=0.0484,wR=0.0852（I>2σ（I））。来自4个不同btc^3-配体的4个羧基连接相邻的3个钴（Ⅱ）离子形成了1个三核钴（Ⅱ）的结构单元。这些三核钴（Ⅱ）的结构单元又通过btc^3-配体与钴（Ⅱ）离子的配位作用形成了1个三维的框架。研究表明,该聚合物中相邻钴（Ⅱ）离子之间存在铁磁相互作用。     

2-丙基-1H-4, 5-咪唑二酸构筑的混核锌-钕配位聚合物的合成、晶体结构及磁性质

通过水热方法,合成了一个杂金属的配位聚合物{[NdZn(H2pimda)3(Hpimda)(H2O)2]·H2O}n(1),(H3pimda=2-丙基-1H-4,5-咪唑二酸),并对其结构和磁性质进行了研究。结构分析结果表明配合物1的晶体属于单斜晶系,P21/c空间群。配合物1是由配体2-丙基-1H-4,5-咪唑二酸连接而成的二维层状结构,该二维层通过氢键延伸为三维超分子结构。磁性研究表明,配合物1中相邻钕离子间存在着反铁磁相互作用。     

Syntheses,Crystal Structures and Luminescent and Magnetic Properties of Cerium(Ⅲ) and Zinc(Ⅱ) Coordination Compounds Constructed from 3,5-Dibromobenzoic Acid

Two coordination compounds, namely [Ce(3,5-Br2BC)3(3,5-HBr2BC)]n(1) and [Zn(3,5-Br2BC)2(phen)](2, 3,5-HBr2 BC = 3,5-dibromobenzoic acid, phen = 1,10-phenanthroline), were assembled. Single-crystal X-ray diffraction studies show that compound 1 possesses a 1D chain coordination network, which is further extended into a 3D supramolecular architecture via Br···Br and Br···O halogen bonding. Compound 2 consists of a mononuclear molecule, which is assembled to a 3D supramolecular framework through C–H···O hydrogen bond, π-π stacking interactions and Br···π halogen bonding. Luminescent and magnetic properties of both compounds have also been studied.     

以2,4,4′-联苯三羧酸及2,2′-联吡啶构筑的三维钴(Ⅱ)配位聚合物的合成、晶体结构及磁性质(英文)

通过水热方法,以2,4,4′-联苯三羧酸(H3btc)和2,2′-联吡啶(2,2′-bpy)与CoCl2·6H2O反应,合成了1个具有三核钴单元的三维配位聚合物[Co1.5(btc)(2,2′-bpy)0.5(2H2O)]n,并对其结构和磁性质进行了研究。结构分析结果表明该聚合物的晶体属于单斜晶系,I2/a空间群,a=1.774 4(4)nm,b=1.142 3(2)nm,c=1.890 8(4)nm,β=105.18(3)°,V=3.698 5(13)nm3,Dc=1.745 g·cm-3,Z=8,R=0.048 4,wR=0.085 2(I2σ(I))。来自4个不同btc3-配体的4个羧基连接相邻的3个钴(Ⅱ)离子形成了1个三核钴(Ⅱ)的结构单元。这些三核钴(Ⅱ)的结构单元又通过btc3-配体与钴(Ⅱ)离子的配位作用形成了1个三维的框架。研究表明,该聚合物中相邻钴(Ⅱ)离子之间存在铁磁相互作用。     

Syntheses,Crystal Structures and Luminescent Properties of Lead(Ⅱ) and Cadmium(Ⅱ) Coordination Polymers Constructed from Biphenyl-2,5,3′-tricarboxylate

Two coordination polymers, namely [Pb(Hbtc)(phen)]n(1) and {[Cd3(btc)2(H2O)4]·2H2O}n(2, H3btc = biphenyl-2,5,3'-tricarboxylic acid, phen = 1,10-phenanthroline), were assembled. Single-crystal X-ray diffraction studies show that compound 1 possesses a zigzag chain 1D coordination network, which is further extended into a 3D supramolecular architecture via O–H···O hydrogen bonds and π-π packing interactions. Compound 2 features a 3D open framework based on a tricadmium(II) subunit, generating a trinodal 4,4,6-connected net with the 4,4,6T24 topology defined by the point symbol of(44·62)3(46·69)2. Thermal stability and luminescent properties of both compounds were studied and discussed.     

Syntheses,Crystal Structures,and Magnetic Properties of the Cobalt(Ⅱ) and Nickel(Ⅱ) Coordination Polymers Constructed from 5-Halonicotinate and 2,2ˊ-Biimidazole

Two coordination polymers, namely [Co(5-Clnic)2(H2biim)]n 1 and {[Ni(5-Clnic)(Hbiim)]·H2O}n 2(5-Clnic H = 5-halonicotinic acid, H2 biim = 2,2ˊ-biimidazole), were assembled. Single-crystal X-ray diffraction studies show that compound 1 possesses a 1D chain coordination network, which is further extended into a 3D supramolecular architecture via N–H···O hydrogen bonds and π-π packing interactions. Compound 2 features a 1D chain structure based on the hexanuclear macrocycles. The adjacent 1D chains are held together into a 3D supramolecular framework via N–H···O and O–H···O hydrogen bonding interactions. Thermal stability and magnetic properties of both compounds were studied and discussed.     

Synthesis, Crystal Structure and Luminescent Properties of a Novel 2D Sheet Cd(Ⅱ) Coordination Polymer [Cd(Cpna)(Py)]n

A coordination polymer, [Cd(cpna)(py)]n(H2cpna = 5-(2-carboxylphenyl) nicotic acid, py = pyridine) 1 has been hydrothermally synthesized and characterized by elemental analysis, IR, TG, fluorescence spectra and single-crystal X-ray diffraction. Colorless crystals crystallize in the monoclinic system, space group P21/c with a = 8.589(2), b = 13.047(3), c = 14.940(4) , β = 96.001(2)°, V = 1664.9(7) 3 , C18H12CdN2O4 , Mr = 432.70, Dc = 1.726 g/cm 3 , F(000) = 856, Z = 4, μ(MoKα) = 1.337 mm -1 , the final R = 0.0396 and wR = 0.0891 for 2422 observed reflections (I > 2σ(I)). Complex 1 exhibits a two-dimensional (2D) sheet structure, which further builds a three-dimensional (3D) supramolecular architecture via C-H···O hydrogen-bonding interactions.     

基于5-氯烟酸的锌（Ⅱ）和镉（Ⅱ）配合物的合成、晶体结构及荧光性质

通过水热方法,以5-氯烟酸（5-ClnicH）和2,2’-联咪唑（2,2’-biimidazole）分别与Zn（NO₃）₂·6H₂O和Cd（NO₃）₂·4H₂O反应,合成了2个配合物[Zn（5-Clnic）₂]_n（1）和[Cd（5-Clnic）₂（H₂biim）₂]（2）,并对其结构和荧光性质进行了研究。结构分析结果表明配合物1和2分别属于单斜晶系,C2c空间群和三斜晶系,P1空间群。配合物1具有二维层状结构,而且这些层通过Cl…Cl卤键作用进一步形成了三维超分子框架。2为单核镉配合物,通过分子间N-H…O、C-H…N和C-H…Cl氢键作用,单核的分子被进一步连接成了三维超分子结构。配合物1和2在室温下能分别发出很强的紫色和绿色荧光。