排序方式: 共有37条查询结果,搜索用时 15 毫秒
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苯并咪唑(bim)和NiCl<,2>·6H<,m2>O分别与L-丙氨酸(L-ala),L-亮氨酸(L-leu)和L-精氨酸(L-arg)反应,合成了三种新的Ni-SOD模拟物:Ni(bim)<,2>(L-ala)<,2>(1),Ni(bim)2(L-leu)<,2>·H<,2>O(2)和Ni(bim)2(L-arg)<,2>(3),其结构经UV-Vis,IR,元素分析和摩尔电导率表征.用改进的氮蓝四唑(NBT)光还原法测定了1~3对O<,2><'->·歧化的催化作用,结果显示:1~3的IC<,50>值分别为0.24 μmol·L<'-1>,0.39 μmol·L<'-1>和0.37μmol·L<'-1>,表明1-3均具有良好的超氧化物歧化酶活性. 相似文献
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合成了三种邻菲罗啉-氨基酸酮(Ⅱ)的配合物,用元素分析,摩尔电导,IR和电子吸收光谱等手段对配合物进行表征。 相似文献
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The complex [Cu(phen)2(POAc)3]ClO·4H2O has been synthesized and investigated by elemental analysis, IR spec-troscopy and X-ray diffraction methods, where phen = 1,10-phenanthroline, POAc = phenylacetate group). The complex crystallizes in the triclinic space group PI with two molecules in a unit cell of dimensions a = 1.0579(2) nm, b = 1.2423(3) nm, c = 1.9190(4) nm, α = 71.84(1)°, β = 80.50(2)°, γ = 88.60(1)°, V = 2.3625(9) nm3, R = 0.0407 and Rw = 0.0656. The complex results from bridging of two Cu(phen)2 units by three carboxylate groups, and each Cu2 ion is in a distorted square pyramidal geometry with two nitrogen atoms of phen and three carboxylate oxygen atoms of POAc. It has been showed that intramolecular stacking interactions occur between the phenyl moieties of POAc and aromatic rings of phen, leading to a novel molecule structure with two coordinating modes of carboxylate ligands, of which two phenylacetates are μ2-carboxylate-O-bridging ligands, and the other is a μ2-carboxylate- 相似文献
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[Cu(L-Ⅱe)(Phen)(H2O)(ClO4)]的合成、结构及稳定性研究 总被引:3,自引:0,他引:3
合成了三元混配配合物[Cu(L-Ile)(Phen)(H_2O)(ClO_4)](L-Ile=L=异亮氨酸,phen=1,10-邻菲咯啉),通过红外光谱、紫外-可见光谱、摩尔电导率、X射线单晶结构分析,对配合物进行了表征。该晶体属单斜晶系,P2_1空间群,晶胞参数:a=1.1704(5)nm,b=0.8090(5)nm,c=2.1822(5)nm,β=98.061(5)°,Z=2,D_x=1.60Mg·m~(-3),R_1=0.0462,wR_2=0.1225。每个配合物分子中Cu(Ⅱ)离子与一个L-Ile(N,O)配体、一个Phen(N,N)配体、一个H_2O(O)配体及一个Cl_O~-(O)形成六配位的畸变八面体构型。本文还用电位滴定法测定了配合物的稳定常数,结果表明,配合物具有高的稳定性。 相似文献
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合成了三元混配配合物[Cu(L-Ile)(Phen)(H20)(ClO4)](L-Ile=L-异亮氨酸,phen=1,10-邻菲咯啉),通过红外光谱、紫外-可见光谱、摩尔电导率、X射线单晶结构分析,对配合物进行了表征.该晶体属单斜晶系,P21空间群,晶胞参数:a=1.1704(5)nm,b=0.8090(5)nm,c=2.1822(5)nm,β=98.061(5)°,Z=2,Dx=1.60Mg·m-3,R1=0.0462,wR2=0.1225.每个配合物分子中Cu(Ⅱ)离子与一个L-Ile(N,O)配体、一个Phen(N,N)配体、一个H2O(O)配体及一个ClO4-(O)形成六配位的畸变八面体构型.本文还用电位滴定法测定了配合物的稳定常数,结果表明,配合物具有高的稳定性. 相似文献
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