以α-H_(3)PMo_(12)O_(40)·nH_(2)O,La_(2)O_(3)和二甲基亚砜(DMSO)为原料,在乙腈和水的混合溶剂中制得了一维锯齿链状配位聚合物[{La(DMSO)_(6)(H_(2)O)}(PMo_(12)O_(40))·H_(2)O]_(n).X射线单晶衍射结果表明,聚合物中金属...以α-H_(3)PMo_(12)O_(40)·nH_(2)O,La_(2)O_(3)和二甲基亚砜(DMSO)为原料,在乙腈和水的混合溶剂中制得了一维锯齿链状配位聚合物[{La(DMSO)_(6)(H_(2)O)}(PMo_(12)O_(40))·H_(2)O]_(n).X射线单晶衍射结果表明,聚合物中金属配阳离子与杂多阴离子骨架通过Mo Od La Od Mo相连并形成一维无限链,每一个不对称结构单元中含一个结晶水,La^(3+)的配位数为九,三帽三棱柱构型,配位氧原子分别来自6个DMSO分子,1个H_(2)O分子和2个相邻杂多阴离子的端氧.晶体属于单斜晶系,P2_(1)/c空间群,a=13916(3)nm,b=17058(3)nm,c=24750(5)nm,β=9916(3)°,Z=4,V=5800(2)nm^(3),Dc=2825g/cm^(3),R_(1)=00446,wR_(2)=00871.IR光谱和X射线单晶衍射结果一致表明,在固态条件下配阳离子和杂多阴离子之间存在相互作用.UV光谱表明,在稀的水溶液中,由于溶剂化作用,杂多阴离子与配阳离子处于解离状态.热性质研究表明,形成标题化合物后。展开更多
The novel amino acid containing polyoxometalate K 6[Cu(Ala) 2(H 2O) 2] 2[Cu 4(H 2O) 2\5(AsW 9O 34 ) 2]·16H 2O was synthesized from the reaction of K 10 [Cu 4(H 2O) 2(AsW 9O 34 ) 2]·20H 2O with β alanine. It...The novel amino acid containing polyoxometalate K 6[Cu(Ala) 2(H 2O) 2] 2[Cu 4(H 2O) 2\5(AsW 9O 34 ) 2]·16H 2O was synthesized from the reaction of K 10 [Cu 4(H 2O) 2(AsW 9O 34 ) 2]·20H 2O with β alanine. Its structure has been determined by single crystal X ray diffraction. It crystallizes in the triclinic space group P1 , with a =1.196 3(2) nm, b =1.536 5(3) nm, c =1.591 4(3) nm, α=93.97(3)°, β=110.88(3)°, γ=101.07(3)°, V =2.651 8(9) nm 3 and Z =1. Least squares refinement of the structure leads to R and R w factors of 0.067 3 and 0.162 8, respectively. An unusual structural feature of the compound is that the polyanion [Cu 4(H 2O) 2(AsW 9O 34 ) 2] 10- is linked with the amino acid complex of Cu 2+ by a μ oxygen atom.展开更多
A new kind of Anderson type chromium molybdates containing the rare earth elements are synthesized, which have the general molecular formula of (NH4)6[CrMo5Ln(OH2)2O24H6]·xH2O (Ln=La,Ce,Pr,Nd,Sm,Gd and Yb). The c...A new kind of Anderson type chromium molybdates containing the rare earth elements are synthesized, which have the general molecular formula of (NH4)6[CrMo5Ln(OH2)2O24H6]·xH2O (Ln=La,Ce,Pr,Nd,Sm,Gd and Yb). The components of theseheteropoly complexes are determined by chemical elemental analysis, ICP and TG DTA. And IR, UV, ESR,XPS and 1H NMR are also applied to characterize the complexes as well. The results indicate that the structures of these complexes are Anderson B type and the rare earth elements are in the inner sphere of the heteropoly salts. The thermal stabilities of these complexes studied by TG DTA show that the range of pyrolysis temperature is between 490℃and 500℃.展开更多
文摘以α-H_(3)PMo_(12)O_(40)·nH_(2)O,La_(2)O_(3)和二甲基亚砜(DMSO)为原料,在乙腈和水的混合溶剂中制得了一维锯齿链状配位聚合物[{La(DMSO)_(6)(H_(2)O)}(PMo_(12)O_(40))·H_(2)O]_(n).X射线单晶衍射结果表明,聚合物中金属配阳离子与杂多阴离子骨架通过Mo Od La Od Mo相连并形成一维无限链,每一个不对称结构单元中含一个结晶水,La^(3+)的配位数为九,三帽三棱柱构型,配位氧原子分别来自6个DMSO分子,1个H_(2)O分子和2个相邻杂多阴离子的端氧.晶体属于单斜晶系,P2_(1)/c空间群,a=13916(3)nm,b=17058(3)nm,c=24750(5)nm,β=9916(3)°,Z=4,V=5800(2)nm^(3),Dc=2825g/cm^(3),R_(1)=00446,wR_(2)=00871.IR光谱和X射线单晶衍射结果一致表明,在固态条件下配阳离子和杂多阴离子之间存在相互作用.UV光谱表明,在稀的水溶液中,由于溶剂化作用,杂多阴离子与配阳离子处于解离状态.热性质研究表明,形成标题化合物后。
文摘The novel amino acid containing polyoxometalate K 6[Cu(Ala) 2(H 2O) 2] 2[Cu 4(H 2O) 2\5(AsW 9O 34 ) 2]·16H 2O was synthesized from the reaction of K 10 [Cu 4(H 2O) 2(AsW 9O 34 ) 2]·20H 2O with β alanine. Its structure has been determined by single crystal X ray diffraction. It crystallizes in the triclinic space group P1 , with a =1.196 3(2) nm, b =1.536 5(3) nm, c =1.591 4(3) nm, α=93.97(3)°, β=110.88(3)°, γ=101.07(3)°, V =2.651 8(9) nm 3 and Z =1. Least squares refinement of the structure leads to R and R w factors of 0.067 3 and 0.162 8, respectively. An unusual structural feature of the compound is that the polyanion [Cu 4(H 2O) 2(AsW 9O 34 ) 2] 10- is linked with the amino acid complex of Cu 2+ by a μ oxygen atom.
文摘A new kind of Anderson type chromium molybdates containing the rare earth elements are synthesized, which have the general molecular formula of (NH4)6[CrMo5Ln(OH2)2O24H6]·xH2O (Ln=La,Ce,Pr,Nd,Sm,Gd and Yb). The components of theseheteropoly complexes are determined by chemical elemental analysis, ICP and TG DTA. And IR, UV, ESR,XPS and 1H NMR are also applied to characterize the complexes as well. The results indicate that the structures of these complexes are Anderson B type and the rare earth elements are in the inner sphere of the heteropoly salts. The thermal stabilities of these complexes studied by TG DTA show that the range of pyrolysis temperature is between 490℃and 500℃.
