Reactions of 2-（2-benzoimidazolyl）acetonitrile and Na N3 with Zn SO4 or Zn Cl2 in the presence of nicotinic acid in the mixture of Et OH/H2 O afforded a mononuclear compound [Zn（L1）2]（1） and a 1-D polymer [Zn（L...Reactions of 2-（2-benzoimidazolyl）acetonitrile and Na N3 with Zn SO4 or Zn Cl2 in the presence of nicotinic acid in the mixture of Et OH/H2 O afforded a mononuclear compound [Zn（L1）2]（1） and a 1-D polymer [Zn（L1）Cl]n（2）, respectively（L1 = 5-[（benzoimidazolyl）methyl]-1H-tetrazolate）. However, in the similar condition except that imidazole was added instead of nicotinic acid, the reaction afforded a 1-D compound [Zn（L1）2]n（3） featuring triply helical chains via the π-π stacking of ligands. They are characterized by elemental analysis and IR, and their structures have been determined by X-ray crystallography. Thermal stability of these compounds was measured by TGA and their luminescent properties were investigated at room temperature.展开更多
A novel 2-D {[Cd4（tpt）2（Cl）4（2,4-pdc）2]·4H2O}n （1） has been synthesized from the hydrothermal reaction of 3,5,6-tris（2-pyridyl）-1,3,5-triazine （tpt）, hydrated CdCI2, and 2,4-dicarboxylic acid （2,4-H2...A novel 2-D {[Cd4（tpt）2（Cl）4（2,4-pdc）2]·4H2O}n （1） has been synthesized from the hydrothermal reaction of 3,5,6-tris（2-pyridyl）-1,3,5-triazine （tpt）, hydrated CdCI2, and 2,4-dicarboxylic acid （2,4-H2pdc）. Compound 1 crystallizes in triclinic, P1^- space group with a = 8.9434（5）, b = 9.5486（7）, c = 17.5772 （8） A, a = 75.014 （5）, β= 83.778（5）, γ = 68.304（6）°, V = 1347.14（14） A^3, C50H38Cd4C14N14O12, Mr = 1618.32, Dc = 1.990 g/cm^3, S = 0.95,μ（MoKa） = 1.83 mm^-1, F（000） = 788, Z = 1, R = 0.039 and wR = 0.080. The structure consists of tetranuclear [Cd4（tpt）2（Cl）4]^4＋ cores as the secondary building unit, which is further connected by the ligand pdc2 to give a 2-D extended structure. Tpt entities are located on both sides of each 2-D framework and act as ＇side arms＇ to form a corrugated layer and the adjacent layers are arranged in a tongue-and-groove interdigitating fashion. 1 was characterized by IR, TGA, PX1RD, and elemental analysis. The solid state luminescent properties were also investigated at room temperature.展开更多
The syntheses, crystal structures and magnetic properties of two cyano-bridged heterobimetallic compounds prepared from a paramagnetic Ru^Ⅲ building block, transK[Ru^Ⅲ（salchda）（CN）2]（1, salchda = N,N＇-bis（sal...The syntheses, crystal structures and magnetic properties of two cyano-bridged heterobimetallic compounds prepared from a paramagnetic Ru^Ⅲ building block, transK[Ru^Ⅲ（salchda）（CN）2]（1, salchda = N,N＇-bis（salicylidene）-o-cyclohexylenediamine）, are described.1 reacts with hydrated CoCl2 and [Mn Ⅲ（salchda）（Cl）（H2O）] in MeOH to produce a trinuclear compound {[Ru^Ⅲ（salchda）（CN）]2（μ-CN）2[Co（MeOH）4]·4MeOH}n（2） and a dinuclear{[Ru^Ⅲ（salchda）（CN）]（μ-CN）[Mn^Ⅲ（salchda）（MeOH）]·2MeOH}n（3）, respectively. Both compounds exhibit intramolecular ferromagnetic coupling between Ru^Ⅲ and 3-d metal centers via the cyano bridge and intermolecular antiferromagnetic coupling. Moreover, 2 exhibits antiferromagnetic ordering below 3.4 K.展开更多
基金supported by the National Natural Science Foundation of China(21201023)the scientific research fund of Hubei Provincial Education Department(D20131202)
文摘Reactions of 2-（2-benzoimidazolyl）acetonitrile and Na N3 with Zn SO4 or Zn Cl2 in the presence of nicotinic acid in the mixture of Et OH/H2 O afforded a mononuclear compound [Zn（L1）2]（1） and a 1-D polymer [Zn（L1）Cl]n（2）, respectively（L1 = 5-[（benzoimidazolyl）methyl]-1H-tetrazolate）. However, in the similar condition except that imidazole was added instead of nicotinic acid, the reaction afforded a 1-D compound [Zn（L1）2]n（3） featuring triply helical chains via the π-π stacking of ligands. They are characterized by elemental analysis and IR, and their structures have been determined by X-ray crystallography. Thermal stability of these compounds was measured by TGA and their luminescent properties were investigated at room temperature.
基金supported by the financial support of National Natural Science Foundation of China(21201023)the scientific research fund of Hubei Provincial Education Department(D20131202)
文摘A novel 2-D {[Cd4（tpt）2（Cl）4（2,4-pdc）2]·4H2O}n （1） has been synthesized from the hydrothermal reaction of 3,5,6-tris（2-pyridyl）-1,3,5-triazine （tpt）, hydrated CdCI2, and 2,4-dicarboxylic acid （2,4-H2pdc）. Compound 1 crystallizes in triclinic, P1^- space group with a = 8.9434（5）, b = 9.5486（7）, c = 17.5772 （8） A, a = 75.014 （5）, β= 83.778（5）, γ = 68.304（6）°, V = 1347.14（14） A^3, C50H38Cd4C14N14O12, Mr = 1618.32, Dc = 1.990 g/cm^3, S = 0.95,μ（MoKa） = 1.83 mm^-1, F（000） = 788, Z = 1, R = 0.039 and wR = 0.080. The structure consists of tetranuclear [Cd4（tpt）2（Cl）4]^4＋ cores as the secondary building unit, which is further connected by the ligand pdc2 to give a 2-D extended structure. Tpt entities are located on both sides of each 2-D framework and act as ＇side arms＇ to form a corrugated layer and the adjacent layers are arranged in a tongue-and-groove interdigitating fashion. 1 was characterized by IR, TGA, PX1RD, and elemental analysis. The solid state luminescent properties were also investigated at room temperature.
基金supported by the financial support of National Natural Science Foundation of China(21201023)the scientific research fund of Hubei Provincial Education Department(D20131202)
文摘The syntheses, crystal structures and magnetic properties of two cyano-bridged heterobimetallic compounds prepared from a paramagnetic Ru^Ⅲ building block, transK[Ru^Ⅲ（salchda）（CN）2]（1, salchda = N,N＇-bis（salicylidene）-o-cyclohexylenediamine）, are described.1 reacts with hydrated CoCl2 and [Mn Ⅲ（salchda）（Cl）（H2O）] in MeOH to produce a trinuclear compound {[Ru^Ⅲ（salchda）（CN）]2（μ-CN）2[Co（MeOH）4]·4MeOH}n（2） and a dinuclear{[Ru^Ⅲ（salchda）（CN）]（μ-CN）[Mn^Ⅲ（salchda）（MeOH）]·2MeOH}n（3）, respectively. Both compounds exhibit intramolecular ferromagnetic coupling between Ru^Ⅲ and 3-d metal centers via the cyano bridge and intermolecular antiferromagnetic coupling. Moreover, 2 exhibits antiferromagnetic ordering below 3.4 K.
