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本文通过理论计算和实验证明,无氰铵盐(NH_4Cl)镀锌溶液中Z_n`(2 )主要以辞氯配离子的形式存在;而锌氨配离子的含量很小。 相似文献
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1 INTRODUCTION For a long time much research interest has been focused on coordination polymers because such new coordination polymers may afford new materials with useful properties such as catalytic activity, mi- croporosity, electrical conductivity, … 相似文献
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A two-dimensional coordination polymer [Zn2(DTB)(DMF)4(H2O)2]n has been synthesized by 1,4-dinitro-2,3,5,6-tetracarboxylatebenzenic acid and hydrate zinc perchlorate in the solutions of DMF and H2O. The crystal belongs to the triclinic system, space group P with a = 8.887(6), b = 9.225(6), c = 9.828(7)(°A), α = 85.249(11), β = 74.863(11), γ= 86.510(13)°, V = 774.4(9), Z = 1, C22H32N6O18Zn2, Mr = 799.28, Dc = 1.714 g/cm3, F(000) = 410 and μ= 1.639 mm-1. The structure was refined to R = 0.0539 and wR = 0.1161 for 1584 observed reflections (I > 2б(I)). In the complex there exist two kinds of coordination environments for the zinc(Ⅱ) ions and a two-dimensional sheet is formed via the coordination of carboxylates and zinc(Ⅱ) ions. 相似文献
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1 INTRODUCTION Much research interest has been focused on thecoordination polymers for a long time because theymay afford new materials with useful properties,such as catalytic activity, microporosity, electricalconductivity, non-linear optical activit… 相似文献
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叔胺催化合成S,S'-(2-苯并噁唑基)-1,2-二硫代草酸酯吴长举,于雁,赵玉国,高克珍山东师范大学化学系,250014,济南;山东师范大学软科学研究所,250014,济南;山东临朐化肥厂,262600,山东临朐;山东师范大学化工厂,250014,... 相似文献
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1 INTRODUCTION Polynitrile compound Na(cda) is a very useful ligand and its complexes have been synthesized[1~3], in which the two-dimensional Eu(III) complex exhi- bits the strongest fluorescence and non-linear optic property[4]. We originally want to… 相似文献
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The three-dimensional coordination polymer {[Cd(cda)2](2CH3OH}n has been syn- thesized by Na(cda) (cda = carbamyldicyanomethanide anion) and hydrated cadmium perchlorate in methanol solution. The crystal belongs to monoclinic, space group C2/c with a = 15.686(3), b = 8.1650(18), c = 13.119(3) (A), β= 119.334(2)°, V = 1464.8(6) (A)3, Z = 4, C10H12CdN6O4, Mr = 392.66, Dc = 1.780 g/cm3, F(000) = 776 and μ = 1.516 mm-1. The structure was refined to R = 0.0248 and wR = 0.0628 for 1176 observed reflections (I > 2σ(I)). The Cd(II) ion is coordinated by two amide- oxygen and four nitrile-nitrogen atoms from six different cda bridging ligands, forming a three- dimensional structure. 相似文献