The two title complexes,[Cd2(phen)2(succ)(H2O)2](NO3-)2 ·3H2O(1)and [Cd2(phen)2(glut)2][Cd2(phen)2(Cl-)2] 2NO3-·14H2O(2)(succ =succinic acid,glut =glutaric acid,phen=1,10-phenanthroline)have been synthesized...The two title complexes,[Cd2(phen)2(succ)(H2O)2](NO3-)2 ·3H2O(1)and [Cd2(phen)2(glut)2][Cd2(phen)2(Cl-)2] 2NO3-·14H2O(2)(succ =succinic acid,glut =glutaric acid,phen=1,10-phenanthroline)have been synthesized at room temperature,and characterized by elemental analysis,IR spectrum and X-ray crystal diffraction.The results show that the complex 1 belongs to monoclinic system with space group P2(1)/c and cell parameter: a=15.373(5),b=13.786(4),c=25.434(7),β=104.582(6)°,V=5217(3)3,Z=4,,Dc=1.624g/cm3,μ(MoKα)=0.895mm-1,F(000)=2576,R1=0.0699,wR2=0.1280.And complex 2 belongs to triclinic system,space group Pī,cell parameter: a=14.131(4),b=14.546(4),c=15.392(5),β=93.731(6),V=2674.93,Z=2,Dc=1.613 g/cm3,μ(MoKα)=0.921 mm-1,F(000)=1316,R1=0.0746,wR2=0.121.Complex 2 has two independent structure and Cd(Ⅱ) is rare seven-coordinated mode.The two complexes formed 2D molecular architectures by hydrogen-bonding and π-π stacking interactions.展开更多
A new coordination polymer of Cd(Ⅱ) was prepared by the reaction of Cd(ClO4)2·6H2O with mixed ligands, namely, neutral double betaine derivative 1,3-bis(pyridinio-4-carboxylato)propane and SCN- anion in aqueous ...A new coordination polymer of Cd(Ⅱ) was prepared by the reaction of Cd(ClO4)2·6H2O with mixed ligands, namely, neutral double betaine derivative 1,3-bis(pyridinio-4-carboxylato)propane and SCN- anion in aqueous solution. The crystal structure of 1 has been determined by single-crystal X-ray diffraction methods. Crystal data for 1: orthorhombic, space group P212121, a=1.050 9(2), b=1.162 8(2), c=1.649 5(3) nm, V=2.015 7(7) nm3, Z=4, F(000)=1 064, Dc=1.756 g·cm-3, the final R=0.050 8 and wR=0.130 1 for 3 530 observed reflections [I>2σ(I)]. Crystal structure of 1 indicates that the ( μ-1,3-NCS) bridging NCS- ligand connects neighboring cadmium atoms, leading to a single strand helical chain which propagates along crystallographic a axis. The metallic nodes of adjacent helical chains are linked by monodentate-monodentate coordination mode of both carboxylate groups in L molecules to generate 2D coordination sheet which parallels to the (001) plane. Adjacent layers are further joined by C-H…O hydrogen bonds; the structure thus expanded into a three-dimensional network. CCDC: 612657.展开更多
文摘The two title complexes,[Cd2(phen)2(succ)(H2O)2](NO3-)2 ·3H2O(1)and [Cd2(phen)2(glut)2][Cd2(phen)2(Cl-)2] 2NO3-·14H2O(2)(succ =succinic acid,glut =glutaric acid,phen=1,10-phenanthroline)have been synthesized at room temperature,and characterized by elemental analysis,IR spectrum and X-ray crystal diffraction.The results show that the complex 1 belongs to monoclinic system with space group P2(1)/c and cell parameter: a=15.373(5),b=13.786(4),c=25.434(7),β=104.582(6)°,V=5217(3)3,Z=4,,Dc=1.624g/cm3,μ(MoKα)=0.895mm-1,F(000)=2576,R1=0.0699,wR2=0.1280.And complex 2 belongs to triclinic system,space group Pī,cell parameter: a=14.131(4),b=14.546(4),c=15.392(5),β=93.731(6),V=2674.93,Z=2,Dc=1.613 g/cm3,μ(MoKα)=0.921 mm-1,F(000)=1316,R1=0.0746,wR2=0.121.Complex 2 has two independent structure and Cd(Ⅱ) is rare seven-coordinated mode.The two complexes formed 2D molecular architectures by hydrogen-bonding and π-π stacking interactions.
文摘A new coordination polymer of Cd(Ⅱ) was prepared by the reaction of Cd(ClO4)2·6H2O with mixed ligands, namely, neutral double betaine derivative 1,3-bis(pyridinio-4-carboxylato)propane and SCN- anion in aqueous solution. The crystal structure of 1 has been determined by single-crystal X-ray diffraction methods. Crystal data for 1: orthorhombic, space group P212121, a=1.050 9(2), b=1.162 8(2), c=1.649 5(3) nm, V=2.015 7(7) nm3, Z=4, F(000)=1 064, Dc=1.756 g·cm-3, the final R=0.050 8 and wR=0.130 1 for 3 530 observed reflections [I>2σ(I)]. Crystal structure of 1 indicates that the ( μ-1,3-NCS) bridging NCS- ligand connects neighboring cadmium atoms, leading to a single strand helical chain which propagates along crystallographic a axis. The metallic nodes of adjacent helical chains are linked by monodentate-monodentate coordination mode of both carboxylate groups in L molecules to generate 2D coordination sheet which parallels to the (001) plane. Adjacent layers are further joined by C-H…O hydrogen bonds; the structure thus expanded into a three-dimensional network. CCDC: 612657.
