FeⅡ-TPPS_3配合物光谱电化学研究

用吸收光谱、单扫描极谱及光谱电化学方法研究Ｆｅ２＋三磺基四苯基卟啉（简写为ＴＰＰＳ３）的水溶性配合物在ｐＨ～４．０的ＨＡｃ－ＮａＡｃ缓冲体系中的性质。实验证明Ｆｅ２＋与ＴＰＰＳ３在９０℃下加热８０ｍｉｎ可以反应完全,配合物主要以ＴＰＰＳ３二聚体和ＴｅⅢ－ＴＰＰＳ３单体的形态存在于该介质中,Ｈ＋参与了配合物的电极反应,Ｆｅ－ＴＰＰＳ３体系中配合物的组成比为１∶１,ＦｅⅢ－ＴＰＰＳ３在电极上还原为ＦｅⅡ－ＴＰＰＳ２为不可逆过程。     

前驱体溶液pH值对溶胶凝胶制备钛酸铋薄膜的影响

采用溶胶凝胶技术在石英玻璃基片上制备钛酸铋薄膜,讨论了前驱体溶液的酸碱度（ｐＨ值）对薄膜结构和结晶性的影响．ｐＨ＜２和ｐＨ＞３５的前驱体溶液所制备的薄膜在晶化过程中出现Ｂｉ２Ｔｉ２Ｏ７和Ｂｉ２Ｔｉ４Ｏ１１杂相．ｐＨ＝２５～３５的前驱体溶液制备的薄膜是钙钛矿Ｂｉ４Ｔｉ３Ｏ１２结构的取向薄膜     

Hofmann重排法合成苯氨基甲酸酯

采用一种新型的溴化试剂１,３－二溴－５,５－二甲基海因（ＤＢＤＭＨ）,在醋酸汞存在下,使苯甲酰胺发生Ｈｏｆｍａｎｎ重排、经异氰酸酯中间体,与醇作用,合成了苯氨基甲酸酯。     

氯代吲哚丁酸乙酯的合成研究

以Ｆｅ粉为催化剂,用直接通入Ｃｌ２的方法对吲哚丁酸乙酯进行氯化,其氯代产物经确证为一未见文献报道的新化合物,对其合成方法进行了详细的讨论。     

Surface state of molybdenum cations in MoO3/CeO2

Conclusion  

土壤中碳酸钙和有机碳测定的一种新方法

利用阿曼苏丹国的一千多个土壤样品,对土壤中碳酸钙和有机碳测定的实验方法进行了研究。发现实际碳酸钙的含量可由“亚稳态”时碳酸钙含量乘以适当的因子代替,从而大大提高了工作效率。而利用有机碳/全氮(C/N)的特殊规律,则可建立一个确定“有机碳”实验中所需土壤样品量的新方法。     

Enzymatic hydrolysis reaction of phospholipids in monolayers

The hydrolysis reaction of , and , -dipalmitoylphosphatidylcholine (DPPC) catalized by bee venom phospholipase A₂ was studied in spreading monolayer at the water/air interface. DPPC and the hydrolysis products, palmitic acid and -lysophosphatidylcholine, palmitoyl were characterized at the interface by means of surface pressure, surface potential and ellipsometric measurements. Furthermore, mixed monolayers of reagents and products were investigated to ascertain their miscibility. The results show that the hydrolysis reaction can be followed by the decrease of surface pressure with time on subphases containing β-cyclodextrin, a well-known complexing agent of many amphiphilic compounds. The order of the reaction, the kinetic constant and other kinetic parameters are deduced.     

纳米级NiTiO3粉体的合成

以Ｈ２ＴｉＯ３，Ｈ２Ｏ２及ＮｉＣｌ２为主要原料，用化学共沉淀法制备了纳米级ＮｉＴｉＯ３。确定了反应物Ｈ２ＴｉＯ３，Ｈ２Ｏ２，ＮＨ３的最佳摩尔比为１：８：２，用不同的退火温度和退火时间对样品处理得到相应粒径的纳米级粉体。     

Synthesen von α,β-ungesättigten 2-(2-Oxo-benzazolin-3-yl)-3-hydroxy-dithio-carbonsäure-alkylestern und entsprechend substituierten Keten-S,S-acetalen sowie deren Kristall- und Molekülstruktur

Summary The new alkyl 2-(2-oxo-benzazoline-3-yl)-3-hydroxy dithiocrotonates and dithiocinnamates4 and the corresponding ketene dithioacetals2 and5 are obtained by dithiocarboxylation of the 3-acceptormethyl substituted benzazoline-2-ones1 or3. Alkylation at room temperature gives compounds4 whereas at higher alkylation temperature2 or5 are formed. The results of X-ray analyses performed for methyl 3-hydroxy-p-chloro-dithiocinnamate4d and of N-[1-(4-chloro-benzoyl)-2,2-bis(methylthio)-vinyl]-benzothiazoline-2-one5e are discussed.

     

Fluorinated triazinones from hexafluoroacetone ethoxycarbonylimine

The behavior of hexafluoroacetone ethoxycarbonylimine in cyclocondensation with different binucleophiles of the amidine type, viz., amino derivatives of N- and N,S-heterocycles, was studied. A preparative method for the synthesis of previously unknown annelated 2,2-bis(trifluoromethyl)-1,3,5-triazinones was developed.