A polynuclear complex [Cd（endc）（H20）]n·nH2O （endc = endo-norbornene-cis- 5,6-dicarboxylate anion） has been synthesized by the hydrothermal reaction of cadmium nitrate tetrahydrate with endo-norbornene-cis-5...A polynuclear complex [Cd（endc）（H20）]n·nH2O （endc = endo-norbornene-cis- 5,6-dicarboxylate anion） has been synthesized by the hydrothermal reaction of cadmium nitrate tetrahydrate with endo-norbornene-cis-5,6-dicarboxylic acid in 1：1 molar ratio, and structurally characterized by single-crystal X-ray diffraction. It crystallizes in monoclinic, space group P21/c with α = 1.16471（7）, b = 0.95334（7）, c = 0.91109（9） nm, Z= 4, V= 1.01035（14） nm^3, D, = 2.160 g/cm^3,μ = 2.172 mm^-1, F（000） = 648, R = 0.0302 and wR = 0.0752. According to structural analysis, each Cd（II） ion is coordinated to six O atoms from three endc anions and one water molecule, giving a distorted octahedral geometry. Two- dimensional layer arrangement of the title complex is constructed from the bridging nature of endc. It is worth notice that adjacent two-dimensional layers are joined together to form a three-dimensional supramolecular framework via intermolecular hydrogen bonding interactions.展开更多
Cis-diaminedithiocyanatoplatinum(Ⅱ)(cis-[Pt(SCN)2(NH3)2])was prepared and characterized through content analysis of Pt,MS,IR.The results show that the complex has cis configuration and the bond type of Pt and SCN-is ...Cis-diaminedithiocyanatoplatinum(Ⅱ)(cis-[Pt(SCN)2(NH3)2])was prepared and characterized through content analysis of Pt,MS,IR.The results show that the complex has cis configuration and the bond type of Pt and SCN-is Pt-S.When the aqueous solution of the complex was stored for one week,an orange-yellow precipitation appeared,different from the complex with light yellow color.Further comparative studies of these two complexes suggested that the precipitation is cis-[Pt(NCS)2(NH3)2],the linkage isomerism of cis-[Pt(SCN)2(NH3)2].The mechanism of the isomerism reaction is also discussed.展开更多
基金This work was supported by the National Natural Science Foundation of China (No. 20571057)
文摘A polynuclear complex [Cd（endc）（H20）]n·nH2O （endc = endo-norbornene-cis- 5,6-dicarboxylate anion） has been synthesized by the hydrothermal reaction of cadmium nitrate tetrahydrate with endo-norbornene-cis-5,6-dicarboxylic acid in 1：1 molar ratio, and structurally characterized by single-crystal X-ray diffraction. It crystallizes in monoclinic, space group P21/c with α = 1.16471（7）, b = 0.95334（7）, c = 0.91109（9） nm, Z= 4, V= 1.01035（14） nm^3, D, = 2.160 g/cm^3,μ = 2.172 mm^-1, F（000） = 648, R = 0.0302 and wR = 0.0752. According to structural analysis, each Cd（II） ion is coordinated to six O atoms from three endc anions and one water molecule, giving a distorted octahedral geometry. Two- dimensional layer arrangement of the title complex is constructed from the bridging nature of endc. It is worth notice that adjacent two-dimensional layers are joined together to form a three-dimensional supramolecular framework via intermolecular hydrogen bonding interactions.
文摘Cis-diaminedithiocyanatoplatinum(Ⅱ)(cis-[Pt(SCN)2(NH3)2])was prepared and characterized through content analysis of Pt,MS,IR.The results show that the complex has cis configuration and the bond type of Pt and SCN-is Pt-S.When the aqueous solution of the complex was stored for one week,an orange-yellow precipitation appeared,different from the complex with light yellow color.Further comparative studies of these two complexes suggested that the precipitation is cis-[Pt(NCS)2(NH3)2],the linkage isomerism of cis-[Pt(SCN)2(NH3)2].The mechanism of the isomerism reaction is also discussed.
