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奎宁与过渡元素钨硼多金属氧酸盐中配位水的取代反应研究 总被引:1,自引:3,他引:1
报道了钨硼杂多阴离子[BW11O39M(H2O)]^7-(M=Co^2 ,Cu^2 ,Ni^2 )中配位水与奎宁的取代反应,利用UV—vis和ESR谱进行了表征,并且测定了配合物的旋光度,结果表明奎宁取代了杂多阴离子中的配位水,与杂多阴离于中的取代过渡金属原子形成了配位键.奎宁与杂多阴离子键合生成的杂多配合物,仍然具有旋光活性,其中含Cu^2 的奎宁杂多化合物保持了奎宁的左旋特性,而含Ni^2 的奎宁杂多配合物由左旋变为右旋。并初步探讨了取代反应的机理。 相似文献
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《图解量子化学》(绘考元量子化学)是日本著名化学家、诺贝尔化学奖获得者福井谦一的专著。该书经厦门大学的教师译成中文,已由化学工业出版社于1981年出版。该书是以简明易懂并能结合实际解决应用问题的 相似文献
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过渡元素钼钨钒磷五元杂多配合物的合成、表征以及与奎宁的取代反应 总被引:4,自引:0,他引:4
Eight new complexes were synthesized for the first time. The compounds which have the general formula KxH2[PM(OH2)Mo7W2V2O39]·nH2O(M=Cr3+,Mn2+,Fe3+,Co3+,Ni2+,Cu2+,Zn2+, Cd2+; x=4 or 5) were de-termined by conductance titration and elemental analysis. The analysis of IR, UV, XRD and ESR show that the products hold the Keggin structure and TG-DTA, IR, XRD at various temperatures and water solubility test also give the evidences that the range of pyrolysis temperature is 300~350℃. The study on the substitutional reaction of coordinated water by optical ligand quinine shows that the SN2 nucleophilic substitution occures when Ni is con-tained in the compound and SN1 nucleophilic substitution occures when Cu is contained. These also confirmed that the transitional metals are in the inner sphere of the complexes. 相似文献
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Keggin结构过渡金属杂多阴离子中配位水与奎宁的取代反应 总被引:1,自引:0,他引:1
The substitution reaction of quinine by the 18 types of heteropoly complexes, for these formed compounds are Keggin structure and the molecular formulas are [XM11O39M′(OH)2]6-(X=Si,Ge,P;M=Mo or W;M′=Co,Ni,Cu), was studied by the means of phase transfer. The results of characterization that were accomplished by UV and ESR indicated that the quinine does form the chemical bond with the hetropoly ligands. Spectral experiment demonstrated that the structure held the same when the heteropoly complex contained Cu2+ was reacted with qui-nine, while the heteropoly complex contained Ni2+ resulted in the changing of the structure. Such a result of op-tical rotatory opticity testified that quinine reacting with heteropoly acid contained transitional metals could form a kind of new complexes which were optical rotation. 相似文献
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