On the basis of the crystal field theory, the formulae of the EPR g factors of three order perturbation with b 2g ground state for 3d 9/3d 1 ions at rhombic tetrahedral clusters (AX 4) n- have been obtain...On the basis of the crystal field theory, the formulae of the EPR g factors of three order perturbation with b 2g ground state for 3d 9/3d 1 ions at rhombic tetrahedral clusters (AX 4) n- have been obtained. Using these formulae, The authors investigated the EPR g factors of the crystals Cs 2CuCl 4 and T 2CuBr 4. The calculation results agree with the experimental findings.展开更多
The solubilities of Cs 2 SO 4 -C 2 H 5 OH-H 2 O ternary system at 30℃and 50℃have been studied using microe-quipment for solubility determination.There appears two phases,alcoh olic phase,water phase in the liquid ph...The solubilities of Cs 2 SO 4 -C 2 H 5 OH-H 2 O ternary system at 30℃and 50℃have been studied using microe-quipment for solubility determination.There appears two phases,alcoh olic phase,water phase in the liquid phase.The solubilities of Cs 2 SO 4 in water,C 2 H 5 OH and mixed solvent have been determ ined.The phase diagram indicated that C 2 H 5 OH might be salted out by Cs 2 SO 4 from this system and the equilibrium solid phase is Cs 2 SO 4 .展开更多
The two new compounds Cs5EuCl8· 14H2O(5∶ 1 type) and Cs2EuCl5· 4H2O(2∶ 1 type) were found and synthesized from CsCl EuCl3 11% HCl H2O quaternary systems by phase equilibrium method, and were characterized ...The two new compounds Cs5EuCl8· 14H2O(5∶ 1 type) and Cs2EuCl5· 4H2O(2∶ 1 type) were found and synthesized from CsCl EuCl3 11% HCl H2O quaternary systems by phase equilibrium method, and were characterized and measured by ultra violet absorption spectrometry and fluorescence spectrum. The results show that upconversion spectrum exhibit at 590nm and 610nm exited at 790nm, and the upconversion intensity increases with the EuCl3 ratio increasing in CsCl.展开更多
The title compound,{[n-Bu 2 Sn(O 2 CCH 2 CS 2 NC 4 H 8 )] 2 O} 2 ,has been synthesized by the reaction of(tetrahydro-pyrrodithiolocarbamoylthio)acetic acid with the di-n-bubyltin oxide in1∶1molar ratio.The complex ha...The title compound,{[n-Bu 2 Sn(O 2 CCH 2 CS 2 NC 4 H 8 )] 2 O} 2 ,has been synthesized by the reaction of(tetrahydro-pyrrodithiolocarbamoylthio)acetic acid with the di-n-bubyltin oxide in1∶1molar ratio.The complex has been characterized by elemental analysis,IR and NMR.The crystal structure of it has been determined by X-ray single crystal diffraction.And the results showed that the crystal belongs to triclinic system with space group P1and some crystal parameters:a=1.2202(9)nm,b=1.3158(10)nm,c=1.3804(10)nm,α =111.215(9)° ,β =99.357(9)° ,γ =96.075(10)°,V=2.006(2)nm 3 ,Z=1,F(000)=908,μ =1.489mm -1 ,D c =1.474g · cm -3 ,R 1 =0.0375,wR 2 =0.0839.The complex has a centrosymmetric dimer structure mode with a four-membered central endo-cyclic Sn 2 O 2 unit in which two bridged oxygen atoms both connect with an exo-cyclic tin atom which has a distorted octahedron.Each of the endo-cyclic tin atoms exhibits a distorted trigonal bipyramid coordination geometry with an additional weak coordination carboxylate oxygen.Four carboxylate ligands are divided into two types.And two of them are bidentate and connecting to each of exo-cyclic tin atoms by using both oxygen atoms,whereas the others bridge to each pair of exo-and endo-cyclic tin atoms utilizing one oxygen atom only.CCDC:220513.展开更多
The title compound, Pd4Cl2, has been synthesized and structurally characterized. It crystallizes in orthorhombic, Pna2(1) space group , with Mr=481.79(C4H16Cl2N8PdS4), a=12.943(3), b=8.283(2), c=15.148(3)? , V=1623.9(...The title compound, Pd4Cl2, has been synthesized and structurally characterized. It crystallizes in orthorhombic, Pna2(1) space group , with Mr=481.79(C4H16Cl2N8PdS4), a=12.943(3), b=8.283(2), c=15.148(3)? , V=1623.9(6)? 3, Z=4. The Pd? ion has an square planar geometry, and is coordinated by four S atom donors from four thiourea molecules. The two Cl- anions found in the apical position balance the charge. In the solid state, the title compound forms three dimensional network structures through hydrogen bonds. The intermolecular hydrogen bonds connect the {Pd4}2+ and chloride ion to contribute to the stability of the structure. CCDC: 193379.展开更多
文摘On the basis of the crystal field theory, the formulae of the EPR g factors of three order perturbation with b 2g ground state for 3d 9/3d 1 ions at rhombic tetrahedral clusters (AX 4) n- have been obtained. Using these formulae, The authors investigated the EPR g factors of the crystals Cs 2CuCl 4 and T 2CuBr 4. The calculation results agree with the experimental findings.
文摘The solubilities of Cs 2 SO 4 -C 2 H 5 OH-H 2 O ternary system at 30℃and 50℃have been studied using microe-quipment for solubility determination.There appears two phases,alcoh olic phase,water phase in the liquid phase.The solubilities of Cs 2 SO 4 in water,C 2 H 5 OH and mixed solvent have been determ ined.The phase diagram indicated that C 2 H 5 OH might be salted out by Cs 2 SO 4 from this system and the equilibrium solid phase is Cs 2 SO 4 .
文摘The two new compounds Cs5EuCl8· 14H2O(5∶ 1 type) and Cs2EuCl5· 4H2O(2∶ 1 type) were found and synthesized from CsCl EuCl3 11% HCl H2O quaternary systems by phase equilibrium method, and were characterized and measured by ultra violet absorption spectrometry and fluorescence spectrum. The results show that upconversion spectrum exhibit at 590nm and 610nm exited at 790nm, and the upconversion intensity increases with the EuCl3 ratio increasing in CsCl.
文摘The title compound,{[n-Bu 2 Sn(O 2 CCH 2 CS 2 NC 4 H 8 )] 2 O} 2 ,has been synthesized by the reaction of(tetrahydro-pyrrodithiolocarbamoylthio)acetic acid with the di-n-bubyltin oxide in1∶1molar ratio.The complex has been characterized by elemental analysis,IR and NMR.The crystal structure of it has been determined by X-ray single crystal diffraction.And the results showed that the crystal belongs to triclinic system with space group P1and some crystal parameters:a=1.2202(9)nm,b=1.3158(10)nm,c=1.3804(10)nm,α =111.215(9)° ,β =99.357(9)° ,γ =96.075(10)°,V=2.006(2)nm 3 ,Z=1,F(000)=908,μ =1.489mm -1 ,D c =1.474g · cm -3 ,R 1 =0.0375,wR 2 =0.0839.The complex has a centrosymmetric dimer structure mode with a four-membered central endo-cyclic Sn 2 O 2 unit in which two bridged oxygen atoms both connect with an exo-cyclic tin atom which has a distorted octahedron.Each of the endo-cyclic tin atoms exhibits a distorted trigonal bipyramid coordination geometry with an additional weak coordination carboxylate oxygen.Four carboxylate ligands are divided into two types.And two of them are bidentate and connecting to each of exo-cyclic tin atoms by using both oxygen atoms,whereas the others bridge to each pair of exo-and endo-cyclic tin atoms utilizing one oxygen atom only.CCDC:220513.
文摘The title compound, Pd4Cl2, has been synthesized and structurally characterized. It crystallizes in orthorhombic, Pna2(1) space group , with Mr=481.79(C4H16Cl2N8PdS4), a=12.943(3), b=8.283(2), c=15.148(3)? , V=1623.9(6)? 3, Z=4. The Pd? ion has an square planar geometry, and is coordinated by four S atom donors from four thiourea molecules. The two Cl- anions found in the apical position balance the charge. In the solid state, the title compound forms three dimensional network structures through hydrogen bonds. The intermolecular hydrogen bonds connect the {Pd4}2+ and chloride ion to contribute to the stability of the structure. CCDC: 193379.
