排序方式: 共有19条查询结果,搜索用时 281 毫秒
1.
The binuclear complex [Cu2(TS)(H2O)]·CH3OH, where TS denotes the binucleating ligand derived from the schiff base N,N′-bis(3-carboxylsalidene)trimethylenediamine, was obtained from the self-decomposition of mononuclear complex Na2CuTS·H2O. It crystallizes in the monoclinic system, space group P21/c. The lattice parameters are a=11.935(2)?,b=15.667(3)?,c=11.621(2)?,β=111.60(3)°,V=2020.2(7)?3, Z=4 with R=0.0467. The structure is made of binuclear units, in which two copper atoms are bridged by two phenolic oxygen atoms. The “inside”copper atom is coordinated by two nitrogens, two phenolic oxygens in a planar coordi-nation site, the copper atom deviates from the mean plane by 0.47?. The “outside” copper atom is five coordinated by two phenolic oxygen atoms、two equatorial carboxyl oxygen atoms and one axial water oxygen atom in a distorted tetragonal cone site, the copper atom is pulled out of the equatorial plane by 0.46?. 相似文献
2.
合成了 4种不对称草酰胺桥联异双核配合物 [Cu( oxca) M( phen) 2 ]Cl O4· 2 H2 O[oxca表示 N -( 2 -羧基苯 ) -N -( 3-氨丙基 )草酰胺三价阴离子 ,phen代表邻菲啉 ,M=Mn、Co、Ni、Zn].用元素分析、红外光谱、电子光谱、热分析及室温磁矩等对所合成配合物进行了表征 .在 DMSO溶剂中采用循环伏安法研究了配合物的电化学性质 .在 4~ 30 0 K范围测量了 Cu( ) -Mn( )和 Cu( ) -Ni( )的变温磁化率 ,经拟合分别得磁参数 J=-1 0 .5 6 cm- 1 和 J=-1 7.0 8cm- 1 ,表明在异双核配合物中金属离子间有较弱的反铁磁性自旋交换作用 . 相似文献
3.
草酰胺桥联大环二羰四胺铜(Ⅱ)-钴(Ⅱ)异双核配合物的合成、结构、表征和电化学性质 总被引:2,自引:0,他引:2
合成了一种具有草酰胺桥联大环二羰四胺结构的 Cu( ) -Co( )异双核配合物 ,用红外光谱、电子光谱、摩尔电导、热重分析、室温磁矩、循环伏安等对其进行了表征 .初步推定 Cu( ) -Co( )异双核配合物具有草酰胺桥联大环二羰四胺结构 .室温磁矩测定表明 ,通过草酰胺桥联配体金属离子间有一定的反铁磁性自旋偶合作用 .循环伏安法测定了配合物的半波电位 ,实验表明 ,此类配合物能够稳定高价态 Cu( ) ,外延桥基配位对大环内腔 Cu( )离子的氧化还原过程无影响 .单核配合物 X射线晶体衍射研究表明 ,其为单斜晶系 ,空间群 P2 1 /c,a=0 .73 861 (1 5 ) nm,b=2 .1 2 1 1 (4 ) nm,c=0 .95 2 5 0 (1 9) nm,β=94.70 (3 )°,R1 =0 .0 5 1 3 ,w R2 =0 .1 1 77,Z=4.Cu( )处于大环四胺平面正方中心上方 0 .0 3 nm,并具有外延草酰胺桥 相似文献
4.
5.
The homobinuclear complexes of Cu (Ⅱ) and Ni (Ⅱ) with N, N'-bis(3-Carboxyl salicyl aminal ethylene) oxalamide were synthesized, and characterized by elemental analysis, IR spectra, Uv-visible spectra, conductometry, thermogravimetry, and magnetic susceptibility measurement, which indicated the complexes own an oxalic amide bridge-linking structure. Room temperature magnetic moment data show that there are antiferromagnetic spin coupling through oxalic amide conjugated double bond, In DMF, the redox half wave potential of Cu (Ⅱ) binuclear complexes have been measured by cyclic voltammetry, which proves that the Cu (Ⅱ) complex has two redox waves. 相似文献
7.
8.
9.
用pH滴定法研究了在0.1MNaClO_4水溶液中(30.0±0.1℃)Cu(II)-邻羟基苄胺(HBA)和Cu(II)-L(L为乙二胺En,联呲啶DiPY,氨基乙酸Gly,丙二酸Mal,草酸Ox)与HBA的配位反应.测得了Cu(II)-HBA配合物稳定常数(logK_1=9.46,logK_2=7.21)和配位反应平衡常数logk_2[En(7.88),Dipy(9.09),Gly(8.23),Mal(8.48),Ox(8.24)].计算了△logK[△logK=logk_2-logK_1(HBA)]和歧化反应的平衡常数logX.所有混合型配合物的稳定性都比单纯配位统计效应所预期的稳定性要大(即logX>0.6).讨论了pH滴定曲线和几种影响混合型配合物稳定性的因素. 相似文献
10.