芳香族羟肟过渡金属配合物及其^(15)N同位素取代红外光谱位移和结构的研究  

^(15)N Isotope Shifted IR Spectra and Structure Study of Arylhydroxyoximes and their Transition Metal Complexes

作　　者：聂崇实[1] 陈耀焕 周澄明[1] 曾明英[1] 盛怀禹 

机构地区：[1]中国科学院上海有机化学研究所,上海200032

出　　处：《有机化学》1990年第2期141-148,共8页Chinese Journal of Organic Chemistry

基　　金：国家自然科学基金

摘　　要：芳香族羟肟类化合物能与过渡金属离子螯合,已成功地应用于金属分析和湿法冶金。显然,此类配合物结构和键性质的研究对于了解反应机理和配位体的分子设计具有指导意义,已经开展了多方面的研究。作者曾报道了2-羟基-4(5)-取代二苯甲酮肟顺式(Syn)和反式(Anti)异构体的v_(OH)The IR spectra (4000～75 cm^(-1)) of five arylhydroxy-oxime and their transitionmetal complexes as well as their corresponding ^(15)N isotope substitutes were measured. Accor-ding to the ^(15)N isotope shifted bands, the characteristic V_(C=N) and V_(=N-O) frequencies of theoximes and their metal complexes are assigned to a medium strong band in 1640～1610 cm^(-1)region and near 1000 cm^(-1) respectively. In low frequency region, a week band showing small^(15)N isotope shift in 380～330 cm^(-1) is assigned to metal-ligand M-N, coordination bond stre-tching mode absorption for the complexes. Using ^(83)Cu and ^(65)Cu isotope shifts, a mediumstrong band in 270～220 cm^(-1) region is tentatively assigned to V_(M-O) mode absorption. For HAP coordinated with different metals, the V_(OH) and V_(=N-O) frequencies of the com-plexes increase and slightly decrease respectively according to the sequence: Fe^(2+), Co^(2+), Cu^(2+),Ni^(2+). The sequence is in consistant with the radius of the metal ions and the roported relative molecular ion peak heights of their EI mass spectra.

关 键 词：芳香羟肟 过渡金属 配合物 氮15 

分 类 号：O614[理学—无机化学]