A novel binucleus mixed-ligand[Cd2(phen)4(bmal)2]·3H2O (phen=phenanthroline; bmal=benzylmalonic acid radical) has been synthesized by the reaction of phen and bmal with cadmium(Ⅱ) salt. X-ray crystal structure a...A novel binucleus mixed-ligand[Cd2(phen)4(bmal)2]·3H2O (phen=phenanthroline; bmal=benzylmalonic acid radical) has been synthesized by the reaction of phen and bmal with cadmium(Ⅱ) salt. X-ray crystal structure analysis was carried out to determine the crystal structure of the title complex. The crystal of the title complex belongs to monoclinic system with space group P21/c, a=1.119 1(8) nm, b=2.480 5(17) nm, c=1.063 4(8) nm, β=142.042(12)°, Z=4, V=2.887(3) nm3, Dc=1.613 g·cm-3, R1=0.046 2, wR2=0.115 6, F(000)=1 424. One carboxyl of bmal is coordinated to Cd(1) with monodentate form, the others are coordinated to Cd(2) with bidentate form. The complexes form a 1-D chain structure bridged by hydrogen bonds that formed by uncoordinated water and oxygen atom of carboxyl group in bmal, the 2-D network structure was formed by π-π interaction of neighbouring phen. CCDC: 257080.展开更多
Complex [Tb(2-FC6H4COO)3·C10H8N2]2 was synthesized from TbCl3·nH2O,2-fluorobenzoic acid,and 2,2′-bipyridine(C10H8N2).The crystals are monoclinic with space group P21/n,and the crystal parameters are:a=1.21...Complex [Tb(2-FC6H4COO)3·C10H8N2]2 was synthesized from TbCl3·nH2O,2-fluorobenzoic acid,and 2,2′-bipyridine(C10H8N2).The crystals are monoclinic with space group P21/n,and the crystal parameters are:a=1.219 1（4） nm,b=1.777 4（6） nm,c=1.371 5（4） nm,β=111.400（5）,（M=）732.41,V=2.767（15） nm3,Z=4,Dcalc=1.758 g/cm3,T=293（2） K.The final R=0.030 2,（wR=）0.054 7.The two Tb3+ ions are linked together by four 2-fluorobenzoate groups in a bridging mode to form a dimeric unit.Each Tb3+ ion is also chelated by one 2-fluorobenzoate group and one 2,2′-bipy ligand,making a coordination number of eight.There are four emission peaks in the luminescence spectrum at 490,545,584,and 618 nm,corresponding to the transitions of the Tb3+ ion:5D4→7F6,5D4→7F5,5D4→7F4,and(5D4→)7F3,respectively.展开更多
The complex \ 2 Complex LI Xia *, JIN Qiong Hua (Department of Chemistry,Capital Normal University,Beijing 100037) Abstract The complex \[Nd(C 4 H 3 OCOO) 2 ·NO 3 ·C 10 H 8 N 2 \] 2 was synthesized from Nd(N...The complex \ 2 Complex LI Xia *, JIN Qiong Hua (Department of Chemistry,Capital Normal University,Beijing 100037) Abstract The complex \[Nd(C 4 H 3 OCOO) 2 ·NO 3 ·C 10 H 8 N 2 \] 2 was synthesized from Nd(NO 3 ) 3 · n H 2 O, 2 furancarboxylic acid(C 4 H 3 OCOOH), and 2,2′ bipyridine(C 10 H 8 N 2 ). The unit cell is triclinic and of Pī symmetry. Unit cell parameters are:Pī, a =0 992 18(17) nm, b =1 023 05(17) nm, c = 1 114 4(3) nm , α =86 778(8)°, β =76 153(5)°, γ =70 363(14)°, M =584 58, V = 1 037 3(4) nm 3 , Z =1 , D calc = 1 877 Mg/m 3 , T =293(2) K. The final R =0 061 8, w R =0 164 4. Each Nd 3+ ion is coordinated by five O atoms of four furancarboxylate groups, two O atoms of nitrate and two N atoms of 2,2′ bipyridine molecule, with a coordination number of 9. The four carboxylate groups coordinate in two modes:bridging and bridging chelating . The two Nd 3+ ions in the dimer are held together by four carboxylate groups of furancarboxylic acid.展开更多
文摘A novel binucleus mixed-ligand[Cd2(phen)4(bmal)2]·3H2O (phen=phenanthroline; bmal=benzylmalonic acid radical) has been synthesized by the reaction of phen and bmal with cadmium(Ⅱ) salt. X-ray crystal structure analysis was carried out to determine the crystal structure of the title complex. The crystal of the title complex belongs to monoclinic system with space group P21/c, a=1.119 1(8) nm, b=2.480 5(17) nm, c=1.063 4(8) nm, β=142.042(12)°, Z=4, V=2.887(3) nm3, Dc=1.613 g·cm-3, R1=0.046 2, wR2=0.115 6, F(000)=1 424. One carboxyl of bmal is coordinated to Cd(1) with monodentate form, the others are coordinated to Cd(2) with bidentate form. The complexes form a 1-D chain structure bridged by hydrogen bonds that formed by uncoordinated water and oxygen atom of carboxyl group in bmal, the 2-D network structure was formed by π-π interaction of neighbouring phen. CCDC: 257080.
文摘Complex [Tb(2-FC6H4COO)3·C10H8N2]2 was synthesized from TbCl3·nH2O,2-fluorobenzoic acid,and 2,2′-bipyridine(C10H8N2).The crystals are monoclinic with space group P21/n,and the crystal parameters are:a=1.219 1（4） nm,b=1.777 4（6） nm,c=1.371 5（4） nm,β=111.400（5）,（M=）732.41,V=2.767（15） nm3,Z=4,Dcalc=1.758 g/cm3,T=293（2） K.The final R=0.030 2,（wR=）0.054 7.The two Tb3+ ions are linked together by four 2-fluorobenzoate groups in a bridging mode to form a dimeric unit.Each Tb3+ ion is also chelated by one 2-fluorobenzoate group and one 2,2′-bipy ligand,making a coordination number of eight.There are four emission peaks in the luminescence spectrum at 490,545,584,and 618 nm,corresponding to the transitions of the Tb3+ ion:5D4→7F6,5D4→7F5,5D4→7F4,and(5D4→)7F3,respectively.
文摘The complex \ 2 Complex LI Xia *, JIN Qiong Hua (Department of Chemistry,Capital Normal University,Beijing 100037) Abstract The complex \[Nd(C 4 H 3 OCOO) 2 ·NO 3 ·C 10 H 8 N 2 \] 2 was synthesized from Nd(NO 3 ) 3 · n H 2 O, 2 furancarboxylic acid(C 4 H 3 OCOOH), and 2,2′ bipyridine(C 10 H 8 N 2 ). The unit cell is triclinic and of Pī symmetry. Unit cell parameters are:Pī, a =0 992 18(17) nm, b =1 023 05(17) nm, c = 1 114 4(3) nm , α =86 778(8)°, β =76 153(5)°, γ =70 363(14)°, M =584 58, V = 1 037 3(4) nm 3 , Z =1 , D calc = 1 877 Mg/m 3 , T =293(2) K. The final R =0 061 8, w R =0 164 4. Each Nd 3+ ion is coordinated by five O atoms of four furancarboxylate groups, two O atoms of nitrate and two N atoms of 2,2′ bipyridine molecule, with a coordination number of 9. The four carboxylate groups coordinate in two modes:bridging and bridging chelating . The two Nd 3+ ions in the dimer are held together by four carboxylate groups of furancarboxylic acid.
