The title complex [(C8H23N4)3+ (ClO4)3-]. H2O was crystallized intriclinic system, P1 space group with unite cell parameters: a= 8. 386(2), b= 10. 558(2), c=11. 865(3) A, a= 77. 75(2)’ β= 72. 65(2),γ= 74. 77(2)...The title complex [(C8H23N4)3+ (ClO4)3-]. H2O was crystallized intriclinic system, P1 space group with unite cell parameters: a= 8. 386(2), b= 10. 558(2), c=11. 865(3) A, a= 77. 75(2)’ β= 72. 65(2),γ= 74. 77(2)°, V= 957. 3(4)A3, Z= 2, Dc= 1. 706 g/cm3, M,=491. 66, F(000) = 512, μ(MoKa) =5. 49cm-1,=0. 71069 (graphite- monochromated), T = 296K. The title complex is composed ofone [C8H23N4]3+ cation, three ClO4 ions and one crystal water molecule. The final Rand Rw values are 0. 058 and 0. 068 respectively.展开更多
The acid dissociation constants of N-carboxymethyl-N-(p-hydroxy phenyl carbamoyl- methyl)-2,3-dihydroxy-5-carbomethoxy benzylamine(CHDCB) and the stability constants of its 1:1 complexes with alkaline earth, Cd(Ⅱ), ...The acid dissociation constants of N-carboxymethyl-N-(p-hydroxy phenyl carbamoyl- methyl)-2,3-dihydroxy-5-carbomethoxy benzylamine(CHDCB) and the stability constants of its 1:1 complexes with alkaline earth, Cd(Ⅱ), Co(Ⅱ), Ni(Ⅱ), Cu(Ⅱ), Zn(Ⅱ), Fe(Ⅲ),Th(Ⅳ)and U(Ⅵ)ions have been determined at 25.0±0.1℃ and at an ionic strength of 0.1(KNO_3)by pH titration method. The probable coordination sites have also been discussed.展开更多
文摘The title complex [(C8H23N4)3+ (ClO4)3-]. H2O was crystallized intriclinic system, P1 space group with unite cell parameters: a= 8. 386(2), b= 10. 558(2), c=11. 865(3) A, a= 77. 75(2)’ β= 72. 65(2),γ= 74. 77(2)°, V= 957. 3(4)A3, Z= 2, Dc= 1. 706 g/cm3, M,=491. 66, F(000) = 512, μ(MoKa) =5. 49cm-1,=0. 71069 (graphite- monochromated), T = 296K. The title complex is composed ofone [C8H23N4]3+ cation, three ClO4 ions and one crystal water molecule. The final Rand Rw values are 0. 058 and 0. 068 respectively.
文摘The acid dissociation constants of N-carboxymethyl-N-(p-hydroxy phenyl carbamoyl- methyl)-2,3-dihydroxy-5-carbomethoxy benzylamine(CHDCB) and the stability constants of its 1:1 complexes with alkaline earth, Cd(Ⅱ), Co(Ⅱ), Ni(Ⅱ), Cu(Ⅱ), Zn(Ⅱ), Fe(Ⅲ),Th(Ⅳ)and U(Ⅵ)ions have been determined at 25.0±0.1℃ and at an ionic strength of 0.1(KNO_3)by pH titration method. The probable coordination sites have also been discussed.