Synthesis and Spectroscopic Characterization of Transition Metal Complexes of Maleionitriledithiolate and 5-Nitro-Phenanthroline

The dithiolenes and diimines and their metal complexes are an important research field in the organic and coordination chemistry^[1-3]. Transition metal complexes of a dithiolene and a diimine have excellent electronic functions due to the intramolecular charge transfer from a ligand to other ligand (LL'CT)^[3], in which are interested authors^[4,5]. Recently we have been studied in detail the synthesis and properties of the title complexes M(mnt)(5-NO₂-phen), M=Mn^Ⅱ, Fe^Ⅱ, Co^Ⅱ, Ni^Ⅱ, Cu^Ⅱ, Zn^Ⅱ. The structure and properties of the M(mnt)(5-NO₂-phen) were characterized by the elemental analysis, TDA-TG, MASS, IR, UV-Vis, fluorescence and EPR spectra,molar conductivity and magnetic susceptibility. In the present abstract we report only the synthesis and spectroscopic characterization of these complexes.     

Studies of Permeabilities of Metallic Ions Through Crosslinked Chitosan Membranes

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高效毛细管电泳-电化学检测对外消旋氯霉素前体的拆分研究

用毛细管电泳-电化学检测法对外消旋苏式-2-氨基-1-对硝基苯基-1,3-丙二醇(氯霉素前体)进行了拆分研究．考察了影响检测及分离效果的实验参数,同时对其拆分机制进行了初步探讨．     

Competition Between the SDW and CDW in Quasi-One-Dimensional Organic Polymer Ferromagnet

The next-nearest-neighbor hopping interactions of ρ-electrons in quasi-onedimensional organic polymer ferromagnet are considered by Peierls-Hubbard model, and a set of self-consistent equations are established to optimize the system. The competition between the SDW and CDW states, which is determined by the interplay between the electron-electron correlation and the next-nearest-neighbor hopping interaction, is studied. At the CDW state,the SDW along the main chain will be tuned by the CDW. Consequently the ferromagnetic state, in which all the spins of the unpaired electrons at side freeradicals are arranged parallelly,will be no longer a stable ground state of the system.     

Suppressing Chaos and Transient in Parameter Perturbed Systems

The systems with some system parameters perturbed are investigated. These systems might exist in nature or be obtained by perturbation or truncation theory. Chaos might be suppressed or induced. Some of these dynamical systems exhibit extraordinary long transients, which makes the temporal structure seem sensitively dependent on initial conditions in finite observation time interval.     

含有双发色团的化合物分子内能量传递的研究

合成了一系列含有萘环和蒽环的不同链长的二元化合物, 简写为N-Mn-A(n=2,4,6,8,10)。在有机溶剂中做了上述系列化合物的荧光光谱。激发波长为λex=280nm时, 发现荧光光谱中有两个发射峰, λem1=370nm, λem2=450nm。前者为萘的荧光峰, 后者为蒽的荧光峰。实验证明, 只有萘吸收280nm的光, 而蒽无吸收。所以在激发萘的条件下, 能量由处于激发态的萘环传向了外于基态的蒽环。在不同的有机溶剂中, 分别做了该系列化合物的荧光光谱随浓度的变化。实验结果指出, 两个荧光峰强度的比值不随浓度的变化而变化, 表明其能量传递为分子内的能量传递。另外在1%的糖淀粉水溶液中, N-Mn-A的浓度为1.0×10^-^5mol.dm^-^3,通过荧光光谱发现没有发生能量传递。表明处于伸展状态的N-Mn-A化合物分子不能发生能量传递。     

Nafion-汞膜化学修饰电极测定GPT的研究

Ｎａｆｉｏｎ－汞膜化学修饰电极测定ＧＰＴ的研究金利通,叶建山,史占玲,方禹之（华东师范大学化学系,上海,２０００６２）关键词Ｎａｆｉｏｎ－汞膜化学修饰电极,谷丙转氨酶,α－酮戊二酸正常人血清中转氨酶活力很小,而组织中转氨酶活力很高．当组织病变时,细胞...     

烯酮或乙烯与甲醛环加成协同反应机理的对比研究

本文研究了烯酮与甲醛, 乙烯与甲醛两个环加成反应的协同过程的过渡态(TS),用能量分解方法对两个过渡态中反应物间的相互作用能的本质做了剖析。通过对比,发现在乙烯与甲的过渡态中反应物的占有轨道间电子的交换排斥作用能比较大, 从而可以说明此反应比乙烯与烯酮间的协同过程难于进行。     

四元体系Li^+,K^+,Mg^2^+/SO~4^2^——H~2O25℃相关系和溶液物化性质的研究

用等温溶解平衡法研究了四元体系Li^+,K^+,Mg^2^+/SO~4^2^--H~2O 25℃溶解度,测定了饱和溶液的密度,粘度,折光率,pH和电导率等物化性质. 四元体系相图由六条溶解度分枝线和五个结晶区构成,分别对应于原始组分和复盐Li~2SO~4·K~2SO~4,K~2SO~4·MgSO~4·6H~2O,没有发现新的复盐或固溶体, 也没有发生原始组分的脱水作用,用现代电解质溶液理论-Pitzer模型校验该体系的溶解度测定值, 结果令人满意     

Syntheses of 3－Methyl－1－propyl－4－piperidoneand1－Methyl－3，7－dipropyl－3，7－diazabicyclo［3，3，1］nonan－9－one

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