摘要
Synthesis and structure of the complex NH 4[Yb(Cydta) (H 2O) 2]·5H 2O(Cydta=trans 1,2 cyclohexanediaminetetraacetic acid) were reported. The crystal and molecular structures of the title complex were determined by single crystal X ray structure analysis. The crystal of the complex NH 4[Yb Ⅲ(Cydta)(H 2O) 2]·5H 2O belongs to triclinic crystal system and P (1) space group. The crystal data are as follows: a =0.8584(4) nm, b =1.0040(4) nm, c =1.4418(6) nm, V =1.2025(9) nm 3, Z =2, M =659.49, D c=1.821 g·cm -3 , μ =3.963 mm -1 and F (000)=662. The final R and R w values for 4093 ( I >2 θ(I )) unique reflections are 0.0454 and 0.0927, and the R and R w values for 4877 (all data) are 0.0624 and 0.0985, respectively. The complex anion [Yb(Cydta)(H 2O) 2] - has a pseudo square antiprismatic eight coordinate structure in which the six coordinate atoms, two N and four O, are from a Cydta ligand and two water molecules coordinate to Yb(Ⅲ) ion directly as the another two ligands.
Synthesis and structure of the complex NH 4[Yb(Cydta) (H 2O) 2]·5H 2O(Cydta=trans 1,2 cyclohexanediaminetetraacetic acid) were reported. The crystal and molecular structures of the title complex were determined by single crystal X ray structure analysis. The crystal of the complex NH 4[Yb Ⅲ(Cydta)(H 2O) 2]·5H 2O belongs to triclinic crystal system and P (1) space group. The crystal data are as follows: a =0.8584(4) nm, b =1.0040(4) nm, c =1.4418(6) nm, V =1.2025(9) nm 3, Z =2, M =659.49, D c=1.821 g·cm -3 , μ =3.963 mm -1 and F (000)=662. The final R and R w values for 4093 ( I >2 θ(I )) unique reflections are 0.0454 and 0.0927, and the R and R w values for 4877 (all data) are 0.0624 and 0.0985, respectively. The complex anion [Yb(Cydta)(H 2O) 2] - has a pseudo square antiprismatic eight coordinate structure in which the six coordinate atoms, two N and four O, are from a Cydta ligand and two water molecules coordinate to Yb(Ⅲ) ion directly as the another two ligands.
基金
ProjectsupportedbytheNationalScienceFoundationofLiaoningProvinceScienceandTechnologyCommittee ( 9810 3 0 0 90 1)
