Reactions of CdX2（X=NO3-, ClO4-） with Hatza （atza=5-aminotetrazole-1-acetato anion） and 2,2′-bipyridine （2,2′-bipy） or 1,10-phenanthroline （1,10-phen） in a methanol/aqueous solution produced a set of new Cd...Reactions of CdX2（X=NO3-, ClO4-） with Hatza （atza=5-aminotetrazole-1-acetato anion） and 2,2′-bipyridine （2,2′-bipy） or 1,10-phenanthroline （1,10-phen） in a methanol/aqueous solution produced a set of new Cd（Ⅱ） coordination polymers, {[Cd（atza）（H2O）（2,2′-bipy）]ClO4}n （1）, {[Cd（atza）（H2O）（1,10-phen）]ClO4 }n （2）, {[Cd（atza）（H2O）（2,2′-bipy）]NO3}n （3） and {[Cd（atza）2 （1,10-phen）]·0.5H2O}n （4）. Single-crystal X-ray diffraction analysis reveals that each Cd（Ⅱ） ion has a distorted octahedral coordination geometry in 1-4, and the Cd（Ⅱ） ion centers are connected through the tridentate atza bridging ligands to form a 2D layer （1-3） or ID chain （4） structure. The fluorescent properties of 2 and 4 are also discussed.展开更多
A new isopolyoxovanadate [Ni(1,10′-phen) 3] 2 [V Ⅳ 2V Ⅴ 8O 26] was hydrothermally synthesized and structurally characterized by the single crystal X-ray diffraction. The compound crystallizes in orthorhombic system...A new isopolyoxovanadate [Ni(1,10′-phen) 3] 2 [V Ⅳ 2V Ⅴ 8O 26] was hydrothermally synthesized and structurally characterized by the single crystal X-ray diffraction. The compound crystallizes in orthorhombic system, space group Pbcn with a=1.362 9(3) nm, b=2.215 6(4) nm, c= 2.571 2(4) nm, V=7.764(2) nm 3, Z=4, R=0.040 3, wR 2=0.044 6. The compound exhibits an unusual empty ellipsoidal cage, which is constructed by eight {V ⅤO 4} tetrahedra and two {V ⅣO 5} square pyramids via corner-sharing modes. The chiral [Ni(1,10′-phen) 3] 2+ complexes act as the counter cations.展开更多
The title ternary complex Nd[(C5H8NS2)3(C12H8N2)] has been synthesized in absolute ethanol by the reaction of NdCl33.74H2O with ammonium pyrrolidinyldithiocarboxylate (APDC) and 1,10-phenanthroline (phenH2O) at air at...The title ternary complex Nd[(C5H8NS2)3(C12H8N2)] has been synthesized in absolute ethanol by the reaction of NdCl33.74H2O with ammonium pyrrolidinyldithiocarboxylate (APDC) and 1,10-phenanthroline (phenH2O) at air atmosphere without any cautions against moisture. The bonding characteristics of the complex were characterized by IR, showing that Nd3+ is bonded with sulfur atom in the APDC and coordinated with nitrogen atom in the phen. TG-DTG investigation indicates that the title complex was decomposed into Nd2S3 and deposited carbon in one step where Nd2S3 predominated in the final products. The enthalpy change of formation of the reaction on the title com-plex in liquid-phase has been determined by a microcalorimeter. Thermodynamic parameters (the activation en-thalpy, the activation entropy and the activation free energy) and kinetics parameters (the rate constant, the apparent activation energy, the pre-exponential constant and the reaction order) of the title reaction have been calculated. The enthalpy change of the solid-phase reaction has been obtained by a thermochemistry cycle.展开更多
The enthalpy change of formation of the reaction of hydrous dysprosium chloride meter. Thermodynamic parameters (the activation enthalpy, the activation entropy and the activation free energy), rate constant and kinet...The enthalpy change of formation of the reaction of hydrous dysprosium chloride meter. Thermodynamic parameters (the activation enthalpy, the activation entropy and the activation free energy), rate constant and kinetics parameters (the apparent activation energy, the pre-exponential constant and the reaction order) of the reaction have also been calculated. The enthalpy change of the solid-phase reaction at 298.15 K has been obtained as (53.59 ± 0.29)liquid-phase and solid-phase reaction indicated that the complex could only be synthesized in liquid-phase reaction.展开更多
The binary and ternary solid complexes of Eu 3+ and La 3+ with pyridine 2,6 dicarboxylic acid (H 2DPC) and 1,10 phen anthroline were synthesized. Their compositions confirmed by elemental analysis are N...The binary and ternary solid complexes of Eu 3+ and La 3+ with pyridine 2,6 dicarboxylic acid (H 2DPC) and 1,10 phen anthroline were synthesized. Their compositions confirmed by elemental analysis are Na 3[Ln(DPC) 3]·2H 2O(Ln=La, Eu) and NaEu(DPC) 2·phen·4H 2O. The coordination mode of ligands with metal ions was studied by NMR. The influences on NMR spectra by induciton effect, screening effect and paramagnetic character of rare earth ions are discussed in this paper. The NMR studies show that these three complexes have similar symmetry and regular change of chemical shifts. Pyridine 2,6 dicarboxylic acid is a tridentate ligand. The coordination number of europium and lanthanum is nine in each of the binary complexes. The coordination number of europium is at least eight in the ternary complex.展开更多
基金supported by the Foundation of Suzhou Science and Technology of Jiangsu Province(SYN201015)Key Laboratory of Advanced Functional Materials of Jiangsu Province of China (No.10KFJJ002)
文摘Reactions of CdX2（X=NO3-, ClO4-） with Hatza （atza=5-aminotetrazole-1-acetato anion） and 2,2′-bipyridine （2,2′-bipy） or 1,10-phenanthroline （1,10-phen） in a methanol/aqueous solution produced a set of new Cd（Ⅱ） coordination polymers, {[Cd（atza）（H2O）（2,2′-bipy）]ClO4}n （1）, {[Cd（atza）（H2O）（1,10-phen）]ClO4 }n （2）, {[Cd（atza）（H2O）（2,2′-bipy）]NO3}n （3） and {[Cd（atza）2 （1,10-phen）]·0.5H2O}n （4）. Single-crystal X-ray diffraction analysis reveals that each Cd（Ⅱ） ion has a distorted octahedral coordination geometry in 1-4, and the Cd（Ⅱ） ion centers are connected through the tridentate atza bridging ligands to form a 2D layer （1-3） or ID chain （4） structure. The fluorescent properties of 2 and 4 are also discussed.
文摘A new isopolyoxovanadate [Ni(1,10′-phen) 3] 2 [V Ⅳ 2V Ⅴ 8O 26] was hydrothermally synthesized and structurally characterized by the single crystal X-ray diffraction. The compound crystallizes in orthorhombic system, space group Pbcn with a=1.362 9(3) nm, b=2.215 6(4) nm, c= 2.571 2(4) nm, V=7.764(2) nm 3, Z=4, R=0.040 3, wR 2=0.044 6. The compound exhibits an unusual empty ellipsoidal cage, which is constructed by eight {V ⅤO 4} tetrahedra and two {V ⅣO 5} square pyramids via corner-sharing modes. The chiral [Ni(1,10′-phen) 3] 2+ complexes act as the counter cations.
基金Project supported by the National Natural Science Foundation of China (No. 20171036) the National Natural Science Foundation of Shaanxi Prov-ince (No. FF02328) and Education Committee of Shannxi Province (No. 01JK229).
文摘The title ternary complex Nd[(C5H8NS2)3(C12H8N2)] has been synthesized in absolute ethanol by the reaction of NdCl33.74H2O with ammonium pyrrolidinyldithiocarboxylate (APDC) and 1,10-phenanthroline (phenH2O) at air atmosphere without any cautions against moisture. The bonding characteristics of the complex were characterized by IR, showing that Nd3+ is bonded with sulfur atom in the APDC and coordinated with nitrogen atom in the phen. TG-DTG investigation indicates that the title complex was decomposed into Nd2S3 and deposited carbon in one step where Nd2S3 predominated in the final products. The enthalpy change of formation of the reaction on the title com-plex in liquid-phase has been determined by a microcalorimeter. Thermodynamic parameters (the activation en-thalpy, the activation entropy and the activation free energy) and kinetics parameters (the rate constant, the apparent activation energy, the pre-exponential constant and the reaction order) of the title reaction have been calculated. The enthalpy change of the solid-phase reaction has been obtained by a thermochemistry cycle.
基金supported by the National Natural Science Foundation of China(Grant No.20171036)Science Foundation of Shaanxi Province(No.2003B19).
文摘The enthalpy change of formation of the reaction of hydrous dysprosium chloride meter. Thermodynamic parameters (the activation enthalpy, the activation entropy and the activation free energy), rate constant and kinetics parameters (the apparent activation energy, the pre-exponential constant and the reaction order) of the reaction have also been calculated. The enthalpy change of the solid-phase reaction at 298.15 K has been obtained as (53.59 ± 0.29)liquid-phase and solid-phase reaction indicated that the complex could only be synthesized in liquid-phase reaction.
文摘The binary and ternary solid complexes of Eu 3+ and La 3+ with pyridine 2,6 dicarboxylic acid (H 2DPC) and 1,10 phen anthroline were synthesized. Their compositions confirmed by elemental analysis are Na 3[Ln(DPC) 3]·2H 2O(Ln=La, Eu) and NaEu(DPC) 2·phen·4H 2O. The coordination mode of ligands with metal ions was studied by NMR. The influences on NMR spectra by induciton effect, screening effect and paramagnetic character of rare earth ions are discussed in this paper. The NMR studies show that these three complexes have similar symmetry and regular change of chemical shifts. Pyridine 2,6 dicarboxylic acid is a tridentate ligand. The coordination number of europium and lanthanum is nine in each of the binary complexes. The coordination number of europium is at least eight in the ternary complex.
