The synthesis and characterization of N,N＇-bis（salicylidene） ethylenediamine, Salen said that were carried out. The behavior of this ligand has been studied in solution in solvent homogeneous and heterogeneous syst...The synthesis and characterization of N,N＇-bis（salicylidene） ethylenediamine, Salen said that were carried out. The behavior of this ligand has been studied in solution in solvent homogeneous and heterogeneous systems in sulphate medium. The use of pH-metric titration, GRAN and JOB＇s methods have permitted the determination of different parameters governing the behavior of Salen in solution such as the acidity constant, the stability constant, the nature of the interaction solvent-solute, the solvation number, the stoichiometry of extracted complex etc.. Then the extraction of the Salen was finally undertaken to words the copper （II） sulfate medium. The pH of complexation, extraction time, the number of protons exchanged and the number of ligands have been finally determined.展开更多
The title complex was obtained by reaction of hydrated neodymium(Ⅲ) nitrate with N,N-disalicyclideneethylenediamine in DMSO. The complex [Nd(C_6H_4OHCHNC_2H_4NCHC_6H_4OH)(NO_3)_3(CH_3SOCH_3)] crystallizes in monoclin...The title complex was obtained by reaction of hydrated neodymium(Ⅲ) nitrate with N,N-disalicyclideneethylenediamine in DMSO. The complex [Nd(C_6H_4OHCHNC_2H_4NCHC_6H_4OH)(NO_3)_3(CH_3SOCH_3)] crystallizes in monoclinic system, space group- P2_1/n, a=9.663(2), b=16.610(6),c=16.322(5),β=102.77(2)°,V=2555(3),M_r=676.71,Z=4,Dx=1.759 gcm-3. The coordination number of Nd(Ⅲ) is 9 with the geometry of a monocapped square antiprism.All of coordination atoms are oxygen atoms from three bidentate nitrate groups, two dischiff base molecules and one DMSO molecule.展开更多
The title complex 1, C28H26CoN4O2, crystallizes in the triclinic system, space group P with a = 9.506(3), b = 9.506(3), c = 14.837(5) ? a = 106.397(5), b = 106.012(5), g = 91.889(6), V = 1217.7(7) 3, Z = 2, Dc =1.390 ...The title complex 1, C28H26CoN4O2, crystallizes in the triclinic system, space group P with a = 9.506(3), b = 9.506(3), c = 14.837(5) ? a = 106.397(5), b = 106.012(5), g = 91.889(6), V = 1217.7(7) 3, Z = 2, Dc =1.390 g/cm3, Mr = 509.46, F(000) = 530, m(MoKa) = 0.738 mm-1, the final R = 0.0359 and wR = 0.0951 for 4275 observed reflections with I > 2s(I). The complex adopts a distorted tetrahedral coordination sphere around the cobalt atom.展开更多
文摘The synthesis and characterization of N,N＇-bis（salicylidene） ethylenediamine, Salen said that were carried out. The behavior of this ligand has been studied in solution in solvent homogeneous and heterogeneous systems in sulphate medium. The use of pH-metric titration, GRAN and JOB＇s methods have permitted the determination of different parameters governing the behavior of Salen in solution such as the acidity constant, the stability constant, the nature of the interaction solvent-solute, the solvation number, the stoichiometry of extracted complex etc.. Then the extraction of the Salen was finally undertaken to words the copper （II） sulfate medium. The pH of complexation, extraction time, the number of protons exchanged and the number of ligands have been finally determined.
文摘The title complex was obtained by reaction of hydrated neodymium(Ⅲ) nitrate with N,N-disalicyclideneethylenediamine in DMSO. The complex [Nd(C_6H_4OHCHNC_2H_4NCHC_6H_4OH)(NO_3)_3(CH_3SOCH_3)] crystallizes in monoclinic system, space group- P2_1/n, a=9.663(2), b=16.610(6),c=16.322(5),β=102.77(2)°,V=2555(3),M_r=676.71,Z=4,Dx=1.759 gcm-3. The coordination number of Nd(Ⅲ) is 9 with the geometry of a monocapped square antiprism.All of coordination atoms are oxygen atoms from three bidentate nitrate groups, two dischiff base molecules and one DMSO molecule.
基金This work was supported by the National Natural Science Foundation of China (No. 20272062)
文摘The title complex 1, C28H26CoN4O2, crystallizes in the triclinic system, space group P with a = 9.506(3), b = 9.506(3), c = 14.837(5) ? a = 106.397(5), b = 106.012(5), g = 91.889(6), V = 1217.7(7) 3, Z = 2, Dc =1.390 g/cm3, Mr = 509.46, F(000) = 530, m(MoKa) = 0.738 mm-1, the final R = 0.0359 and wR = 0.0951 for 4275 observed reflections with I > 2s(I). The complex adopts a distorted tetrahedral coordination sphere around the cobalt atom.
