The title complex {[Ni(TCB)2/2(Him)2(H2O)2]· 6H2O}n(where TCB = 1,2,4,5 benzentetracarboxylic anion, Him=imidazole) has been synthesized in aqueous solution. The <IMG SRC="IMAGE/12180050.JPG" HEIGHT=...The title complex {[Ni(TCB)2/2(Him)2(H2O)2]· 6H2O}n(where TCB = 1,2,4,5 benzentetracarboxylic anion, Him=imidazole) has been synthesized in aqueous solution. The <IMG SRC="IMAGE/12180050.JPG" HEIGHT=11 WIDTH=12>crystal structure has been determined by single crystal X ray diffraction method. It crystallizes in the triclinic system, space group (# 2) with a=1.0661(4)nm,b=1.1175(3)nm,c=1.0062(4)nm,α =94.03(3)° ,β = 110.81(3)° ,γ =114.71(2)° ,V=0.9837(7)nm3,Z=1,F(000)=478,DC=1.553g· cm- 3,F.W.=920.11,u=10.41cm- 1,R=0.040,RW=0.051.In this compound, one of the nickel atom is coordinated by two oxygen atoms from TCB, two oxygen atoms from two water molecules and two nitrogen atoms from two imidazole molecules in a trans fashion to complete an octahedron; whereas the other is ligated by four nitrogen atoms from four imidazole molecules to form a planar square geometry.展开更多
A new Schiff base complex, CoL(ClO4)·3H2O (1) {L represents condensed fromequal molar ratio of salicylaldehyde and diethylenetriamine} was synthesized and characterized. Further, a new coordination polymer, {[Fe...A new Schiff base complex, CoL(ClO4)·3H2O (1) {L represents condensed fromequal molar ratio of salicylaldehyde and diethylenetriamine} was synthesized and characterized. Further, a new coordination polymer, {[FeⅡFeⅢ(ox)3]·1.5H2O}∞(2), was synthesized and characterized, where ox2-=oxalate. The results of the IR and Mssbauer spectra of 2 revealed that the coordination polymer exists 2 D layer structure in the solid state, and anions layer was formed by [FeⅡFeⅢ(ox)3]-unit. The magnetic properties of 2 have been measured and the results indicate that there is magnetic ordering in the low temperature, which may arise from intermolecular ferromagnetic interactions or spin canted effects.展开更多
A coordination polymer,namely [Fe(DPPZ)(dipic)]n(1)(DPPZ =dipyrido [3,2-a:2',3'-c]phenazine and H2dipic=pyridine-2,6-dicarboxylic acid),has been obtained by using hydrothermal synthesis method.The crystal stru...A coordination polymer,namely [Fe(DPPZ)(dipic)]n(1)(DPPZ =dipyrido [3,2-a:2',3'-c]phenazine and H2dipic=pyridine-2,6-dicarboxylic acid),has been obtained by using hydrothermal synthesis method.The crystal structure was determined by X-ray single crystal structure analysis with the following data:Monoclinic,P21/c,a= 0.794 95(16) nm,b=3.601 1(7) nm,c=0.734 32(15) nm,β=106.07(3)°,V=2.020 0(7) nm3,Z=4,Mr=503.25,Dc=1.655 g·cm-3,F(000)=1 024,μ(Mo Kα)=0.795 mm-1,R=0.038 5 and wR=0.081 0.Complex 1 has octahedral coordination geometry and forms 1D zigzag coordination chains that organize into an unusual 3D supramolecular motif through noncovalent bonds,such as π-π stacking interactions and C-H … O hydrogen bonds.The result of TG analysis indicates that the title complex is stable till 290 ℃.展开更多
文摘The title complex {[Ni(TCB)2/2(Him)2(H2O)2]· 6H2O}n(where TCB = 1,2,4,5 benzentetracarboxylic anion, Him=imidazole) has been synthesized in aqueous solution. The <IMG SRC="IMAGE/12180050.JPG" HEIGHT=11 WIDTH=12>crystal structure has been determined by single crystal X ray diffraction method. It crystallizes in the triclinic system, space group (# 2) with a=1.0661(4)nm,b=1.1175(3)nm,c=1.0062(4)nm,α =94.03(3)° ,β = 110.81(3)° ,γ =114.71(2)° ,V=0.9837(7)nm3,Z=1,F(000)=478,DC=1.553g· cm- 3,F.W.=920.11,u=10.41cm- 1,R=0.040,RW=0.051.In this compound, one of the nickel atom is coordinated by two oxygen atoms from TCB, two oxygen atoms from two water molecules and two nitrogen atoms from two imidazole molecules in a trans fashion to complete an octahedron; whereas the other is ligated by four nitrogen atoms from four imidazole molecules to form a planar square geometry.
文摘A new Schiff base complex, CoL(ClO4)·3H2O (1) {L represents condensed fromequal molar ratio of salicylaldehyde and diethylenetriamine} was synthesized and characterized. Further, a new coordination polymer, {[FeⅡFeⅢ(ox)3]·1.5H2O}∞(2), was synthesized and characterized, where ox2-=oxalate. The results of the IR and Mssbauer spectra of 2 revealed that the coordination polymer exists 2 D layer structure in the solid state, and anions layer was formed by [FeⅡFeⅢ(ox)3]-unit. The magnetic properties of 2 have been measured and the results indicate that there is magnetic ordering in the low temperature, which may arise from intermolecular ferromagnetic interactions or spin canted effects.
文摘A coordination polymer,namely [Fe(DPPZ)(dipic)]n(1)(DPPZ =dipyrido [3,2-a:2',3'-c]phenazine and H2dipic=pyridine-2,6-dicarboxylic acid),has been obtained by using hydrothermal synthesis method.The crystal structure was determined by X-ray single crystal structure analysis with the following data:Monoclinic,P21/c,a= 0.794 95(16) nm,b=3.601 1(7) nm,c=0.734 32(15) nm,β=106.07(3)°,V=2.020 0(7) nm3,Z=4,Mr=503.25,Dc=1.655 g·cm-3,F(000)=1 024,μ(Mo Kα)=0.795 mm-1,R=0.038 5 and wR=0.081 0.Complex 1 has octahedral coordination geometry and forms 1D zigzag coordination chains that organize into an unusual 3D supramolecular motif through noncovalent bonds,such as π-π stacking interactions and C-H … O hydrogen bonds.The result of TG analysis indicates that the title complex is stable till 290 ℃.
