The title complex [Nd(Gly)(H 2O) 7]Cl 3 was synthesized and its crystal structure was determined by X ray diffraction to obtain a final R value of 0 026 0 and a wR value of 0 086 8. The crystal is of m...The title complex [Nd(Gly)(H 2O) 7]Cl 3 was synthesized and its crystal structure was determined by X ray diffraction to obtain a final R value of 0 026 0 and a wR value of 0 086 8. The crystal is of monoclinic system with a space groug Pm . Every two neodymium ions in the crystal are connected with a carboxyl group to form a polymeric chain molecule. And each neodymium ion is further coordinated with seven oxygen atoms from water molecules. The counter ion(Cl -) is non coordinated to fill up the space between the polymeric chains. So the Nd 3+ cation is nine coordinated and the coordination polyhedron is a trigonotetradecahedron. In addition, there exists the mirror symmetry in the complex.展开更多
The title complex was synthesized in an aqueous solution at pH=3. 5,and its crystal structure was determined by X-ray diffraction methods. The com-plex is triclinic with space group P1, formula C30H66O42N6Cl6ErY, Mr,=...The title complex was synthesized in an aqueous solution at pH=3. 5,and its crystal structure was determined by X-ray diffraction methods. The com-plex is triclinic with space group P1, formula C30H66O42N6Cl6ErY, Mr,= 1651. 76, a=9. 860(2), b=13. 020(5), c= 13. 632(5) A ; a= 109. 32(3), β=110. 19(2), γ=100. 96(2)°, V= 1456(1 ) A3, Dc= 1. 884 g/cm3, Z= 1, F(000) =833, P= 2. 812mm-1 ;R=0. 046, wR(F2) =0. 123 for 4897 reflections with I>2(I). The complexis of an infinite chain structure with the neibouring metal ions connected by two bridging carboxyl groups from two different proline molecules. The erbium ion and the yttrium ion statistically lies at the position of the metal ion with M=1/2(Er+Y).展开更多
文摘The title complex [Nd(Gly)(H 2O) 7]Cl 3 was synthesized and its crystal structure was determined by X ray diffraction to obtain a final R value of 0 026 0 and a wR value of 0 086 8. The crystal is of monoclinic system with a space groug Pm . Every two neodymium ions in the crystal are connected with a carboxyl group to form a polymeric chain molecule. And each neodymium ion is further coordinated with seven oxygen atoms from water molecules. The counter ion(Cl -) is non coordinated to fill up the space between the polymeric chains. So the Nd 3+ cation is nine coordinated and the coordination polyhedron is a trigonotetradecahedron. In addition, there exists the mirror symmetry in the complex.
文摘The title complex was synthesized in an aqueous solution at pH=3. 5,and its crystal structure was determined by X-ray diffraction methods. The com-plex is triclinic with space group P1, formula C30H66O42N6Cl6ErY, Mr,= 1651. 76, a=9. 860(2), b=13. 020(5), c= 13. 632(5) A ; a= 109. 32(3), β=110. 19(2), γ=100. 96(2)°, V= 1456(1 ) A3, Dc= 1. 884 g/cm3, Z= 1, F(000) =833, P= 2. 812mm-1 ;R=0. 046, wR(F2) =0. 123 for 4897 reflections with I>2(I). The complexis of an infinite chain structure with the neibouring metal ions connected by two bridging carboxyl groups from two different proline molecules. The erbium ion and the yttrium ion statistically lies at the position of the metal ion with M=1/2(Er+Y).
