N－丙烯酰基－N＇－苯基脲及其衍生物的合成与聚合反应

以三种合成路线分别合成了含有脲键的一类单体，Ｎ－丙烯酰基－Ｎ’－苯基脲（ＡＰＵ）、Ｎ－甲基丙烯酰基－Ｎ’－苯基脲（ＭＰＵ）、Ｎ－甲基丙．烯酰基－Ｎ’－对甲苯基脲（ＭＴＵ），通过单体的自由基聚合与共聚合，制备了均聚物和共聚物，经ＩＲ、１Ｈ—ＮＭＲ表征和ＴＧＡ、ＤＳＣ测定．     

铕—N，N—二（N—亚甲基琥珀酰亚胺）甘氨酸—1，10—二氮杂菲三元配合物的

合成了N,N－二（N－亚甲基琥珀酰亚胺）甘氨酸,并以元素分析、IR、^1H NMR和质谱进行表征,实现中发现铕（Ⅲ）与N,N－二（N－亚甲基琥珀酰亚胺）甘氨酸和1,10二氮杂菲形成的配合物具有光致变色的性质。在铕变色物种里,铕离子与N,N－二（N－亚甲基琥珀酰亚胺）甘氨酸中的羧基,1,10－二氮杂菲中的氮原子相结合,同时也可能与水分子和羟基基团结合。     

5，6－二取代－3，4－二氢－2－吡啶酮的N－烷基化反应

由四个５，６－二取代－３，４－二氢－２－吡啶酮经烷基化反应合成了九个未见文献报道的Ｎ－取代５，６－二取代－３，４－二氢－２－吡啶酮，并确定了它们的结构。     

对－N，N－二甲氨基苯乙烯及其聚合物与碳－60的电荷转移现象

对－Ｎ，Ｎ－二甲氨基苯乙烯及其聚合物与碳－６０的电荷转移现象邱健，尹芊，杨华铨，姚光庆，李福绵（北京大学化学系北京１００８７１）关键词电荷转移复合物，对－Ｎ，Ｎ－二甲氨基苯乙烯，碳－６０，荧光光谱电荷转移现象是备受瞩目的一个研究领域，诸如在电荷转移引...     

氮氧自由基研究（ⅩⅩⅢ）——哌啶氮氧自由基及其氧铵盐与N，N，N′，N′—

ESR波谱和流动－停止UV动力学研究表明，水溶液中2，2，6，6－四甲基－4－羟基哌啶－1－氧自由基1和相应氧铵溴盐2均可将N，N，N′，N′－四甲基对苯二胺（TMPD）氧化为相应自由基正离子TMPD^＋，2还能将TMPD^＋进一步氧化为二价正离子TMPD^2＋。TMPD^＋可发生可逆歧化，其稳定性强烈受介质酸碱性的影响，利用计算机对动力学曲线的模拟测得上述有关反应的速率常数，并讨论了反应机理。     

N－（N＇，N＇－二甲氨基甲基）丙烯酰胺－过硫酸钾引发丙烯酰胺聚合的研究

Ｎ－（Ｎ＇，Ｎ＇－二甲氨基甲基）丙烯酰胺－过硫酸钾引发丙烯酰胺聚合的研究潘松汉，唐康泰，王贞，王真智中国科学院广州化学研究所，广州，５１０６５０关键词Ｎ－（Ｎ＇，Ｎ＇－二甲氨基甲基）丙烯酰胺、反应动力学、氧化还原体系、相对分子质量及分布为了制备高质量...     

一种水溶性可聚合敏化剂N－甲基丙烯酰－N＇－嘧啶哌嗪敏化的丙烯酰胺光聚合

一种水溶性可聚合敏化剂Ｎ－甲基丙烯酰－Ｎ＇－嘧啶哌嗪敏化的丙烯酰胺光聚合高青雨，杨更须，张福莲，张举贤，李福绵（河南大学化学化工系开封４７５００１）（北京大学化学系北京１００８７１）关键词Ｎ－甲基丙烯酰－Ｎ＇－嘧啶哌嗪，丙烯酰胺，水溶性光敏剂，光聚合...     

芳胺常压气相N－烷基化反应研究

在固定床催化反应器中常压下研究了芳胺和醇的气相法Ｎ－烷基化反应。考察了γ－Ａｌ２Ｏ３系列催化剂的反应性能，筛选出了两种适用于苯胺Ｎ－甲基化反应且性能较好的催化剂。反应条件为：在甲醇和苯胺的摩尔比为３１时，反应温度为２８０℃，液时空速为０．３ｈ－１的条件下，苯胺转化率为９９％，生成Ｎ，Ｎ－二甲基苯胺（ＤＭＡ）的选择性为９２％。研究了甲醇和芳环上不同位置取代的甲基苯胺的反应规律，其转化率顺序：苯胺≈对一甲苯胺≈间－甲苯胺＞邻－甲苯胺。从Ｃ１到Ｃ４不同结构的醇和苯胺反应的规律研究，证明随醇中碳原子数目的增加，醇的反应活性降低，正构醇和苯胺反应和异构醇与苯胺反应随温度升高的变化趋势相反。     

薄层光密度法测定低含量的N－（α－萘基）咔唑和N－（β－萘基）咔唑

测定了光诱导ＳＲＮ１反应生成的Ｎ－（α－萘基）咔唑和Ｎ－（β－萘基）咔唑。光化学反应产物用硅胶板展开，外标法定量，测定波长２８８ｎｍ，斑点的线性范围０～２μｇ，回收率１００．５％，相对标准偏差４．８％，Ｎ－（α－萘基）咔唑含量＜１％，Ｎ－（β－萘基）咔唑含量２．２６％。     

铕（Ⅲ）－β－二酮－4，4＇－联吡啶－N，N＇－二氧化物三元配合物的合成与表征

铕（Ⅲ）－β－二酮－４，４＇－联吡啶－Ｎ，Ｎ＇－二氧化物三元配合物的合成与表征林惠文，朱文祥（海南师范学院化学系，海口，５７１１５８）（北京师范大学化学系，北京，１００８７５）关键词铕（Ⅲ），４，４＇－联吡啶－Ｎ，Ｎ＇－二氧化物，β－二酮，三元配合物...     

OH(3) (-) and O(2)H(5) (-) double Rydberg anions: predictions and comparisons with NH(4) (-) and N(2)H(7) (-)

A low barrier in the reaction pathway between the double Rydberg isomer of OH(3) (-) and a hydride-water complex indicates that the former species is more difficult to isolate and characterize through anion photoelectron spectroscopy than the well known double Rydberg anion (DRA), tetrahedral NH(4) (-). Electron propagator calculations of vertical electron detachment energies (VEDEs) and isosurface plots of the electron localization function disclose that the transition state's electronic structure more closely resembles that of the DRA than that of the hydride-water complex. Possible stabilization of the OH(3) (-) DRA through hydrogen bonding or ion-dipole interactions is examined through calculations on O(2)H(5) (-) species. Three O(2)H(5) (-) minima with H(-)(H(2)O)(2), hydrogen-bridged, and DRA-molecule structures resemble previously discovered N(2)H(7) (-) species and have well separated VEDEs that may be observable in anion photoelectron spectra.     

Mixed ligand titanium(IV) complexes. Chlorobis(dithiocarbamato)bis(methylsalicylato)titanium(IV) andbis(dithiocarbamato)bis(methylsalicylato)titanium(IV)

Summary Dichlorobis(methylsalicylato)titanium(IV) reacts with potassium or amine salts of dialkyl or diaryl dithiocarbamates in 11 and 12 molar ratios in anhydrous benzene (room temperature) or in boiling CH₂Cl₂ to yield mixed ligand complexes: (AcOC₆H₄O)₂ Ti(S₂CNR₂)Cl (1) and (AcOC₆H₄O)₂ Ti(S₂CNR₂)₂ (2), R=Et, n-Pr, n-Bu, cyclo-C₄H₈ and cyclo-C₅H₁₀. These compounds are moisture sensitive and highly soluble in polar solvents. Molecular weight measurement in conjunction with i.r.,¹H and¹³C n.m.r. spectral studies suggest coordination number 7 and 8 around titanium(IV) in (1) and (2) respectively.     

Bis(trifluoroacetyl) peroxide, CF(3)C(O)OOC(O)CF(3)

Pure, highly explosive CF(3)C(O)OOC(O)CF(3) is prepared for the first time by low-temperature reaction between CF(3)C(O)Cl and Na(2)O(2). At room temperature CF(3)C(O)OOC(O)CF(3) is stable for days in the liquid or gaseous state. The melting point is -37.5 degrees C, and the boiling point is extrapolated to 44 degrees C from the vapor pressure curve log p = -1875/T + 8.92 (p/mbar, T/K). Above room temperature the first-order unimolecular decay into C(2)F(6) + CO(2) occurs with an activation energy of 129 kJ mol(-1). CF(3)C(O)OOC(O)CF(3) is a clean source for CF(3) radicals as demonstrated by matrix-isolation experiments. The pure compound is characterized by NMR, vibrational, and UV spectroscopy. The geometric structure is determined by gas electron diffraction and quantum chemical calculations (HF, B3PW91, B3LYP, and MP2 with 6-31G basis sets). The molecule possesses syn-syn conformation (both C=O bonds synperiplanar to the O-O bond) with O-O = 1.426(10) A and dihedral angle phi(C-O-O-C) = 86.5(32) degrees. The density functional calculations reproduce the experimental structure very well.