一个新的铀（Ⅵ）三元协萃体系

研究了由４，４＇－癸二酰－双－（１－苯基－３－甲基－５－吡唑啉酮）（ＤＢＰＭＰ，简作Ｈ２Ａ），氧化三辛基膦（ＴＯＰＯ），吡啶（Ｐｙ）组成的三元体系从硝酸溶液中对铀的协同萃取，斜率法确定萃合物组成为ＵＯ２Ａ．ＴＯＰＯ．Ｐｙ，制取了固体协萃配合物，并用元素分析、ＩＲ及ＨＮＭＲ等进行了表征。     

二硝酸根（N，N，N’，N’－四正丁基丙二酰胺）合铀酰（Ⅱ）配合物的合成和结构

配合物［ＵＯ２（Ｂｕ２ＮＣＯＣＨ２ＣＯＮＢｕ２）（ＮＯ３）２］晶体属单斜晶系，Ｐ２１／ｃ空间群，ａ＝１０．７４４（２），ｂ＝１３．２２９（５），ｃ＝２０．０１１（８）Ａ，β＝９９．２１（３）°，Ｖ＝２８０８（２）Ａ３，Ｄｃ＝１．０７ｇ·ｃｍ（－３），Ｚ＝４，配合物分子中具有直线结构的铀酰离子由六个氧原子配位，其中四个来自硝酸根，另外两个来自羰基，形成平面六角形，六角形的平面与铀酰离子的直线垂直，两个硝酸根处于相邻位置．     

Zn（ClO_4）_2－DAPTU（MAPTU）－H_2O三元体系30℃时的相平衡研究

测定了三元体系Ｚｎ（ＣｌＯ４）２－Ｌ－Ｈ２Ｏ（Ｌ＝ＤＡＰＴＵ，Ｎ，Ｎ′－二安替比林硫脲；Ｌ＝ＭＡＰＴＵ，Ｎ－甲基－Ｎ′－安替比林硫脲）在３０℃时的溶解度和饱和溶液的折光率，绘制了相应的溶度图和折光率－组成图．体系的溶度曲线和折光率曲线均由３支组成，分别与Ｌ（Ｌ＝ＤＡＰＴＵ，ＭＡＰＴＵ）、Ｚｎ（ＣｌＯ４）２·Ｌ２·ｎＨ２Ｏ（Ｌ＝ＡＰＴＵ．ｎ＝２；Ｌ＝ＭＡＰＴＵ，ｎ＝０）和Ｚｎ（ＣｌＯ４）２·６Ｈ２Ｏ相对应．从溶度图上发现两个未见报道的固液异组成溶解的化合物，经化学分析、元素分析、ＴＧ－ＤＴＡ、ＩＲ表征，结果表明，三元化合物Ｚｎ（ＤＡＰＴＵ）２（ＣｌＯ４）２．２Ｈ２Ｏ中ＤＡＰＴＵ是以两个羧基氧与Ｚｎ２＋离子配位，而在二元化合物Ｚｎ（ＭＡＰＴＵ）２（ＣｌＯ４）２中ＭＡＰＴＵ则以氧和硫原子与Ｚｎ（２＋）离子配位。     

ELECTROCHEMICAL BEHAVIOR OF MOLYBDOTUNGSATE HETEROPOLY COMPLEX WITH NEODYMIUMK_（10）H_3［Nd（SiMO_7W_4O_（39）_2）］xH_20 IN AQUEOUS SOLUTION

ＥＬＥＣＴＲＯＣＨＥＭＩＣＡＬＢＥＨＡＶＩＯＲＯＦＭＯＬＹＢＤＯＴＵＮＧＳＡＴＥＨＥＴＥＲＯＰＯＬＹＣＯＭＰＬＥＸＷＩＴＨＮＥＯＤＹＭＩＵＭＫ_（１０）Ｈ_３［Ｎｄ（ＳｉＭＯ_７Ｗ_４Ｏ_（３９）_２）］ｘＨ_２０ＩＮＡＱＵＥＯＵＳＳＯＬＵＴＩＯＮＸｉｕＭ?..     

THE SYNTHESIS AND CRYSTAL STRUCTURE COMPLEX OF SCHIFF BASE CONTAINING S·N－Cd_3｜CH_3O（O）C_6H_3CH＝NNHC（S）NH_2｜4·（CH_3COO_2·1／2［CH_3S（O）CH_3］·2H_2O

ＴＨＥＳＹＮＴＨＥＳＩＳＡＮＤＣＲＹＳＴＡＬＳＴＲＵＣＴＵＲＥＣＯＭＰＬＥＸＯＦＳＣＨＩＦＦＢＡＳＥＣＯＮＴＡＩＮＩＮＧＳ·Ｎ－Ｃｄ_３｜ＣＨ_３Ｏ（Ｏ）Ｃ_６Ｈ_３ＣＨ＝ＮＮＨＣ（Ｓ）ＮＨ_２｜４·（ＣＨ_３ＣＯＯ_２·１／２［ＣＨ_３Ｓ（Ｏ）ＣＨ_３］·?..     

1,10-双(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)癸二酮-[1,10]与三苯基氧化膦对钐(Ⅲ)的协同萃取行为研究

研究了１，１０－双（１′－苯基－３′－甲基－５′－氧代吡唑－４－基）癸二酮－［１，１０］（ＢＰＭＰＤＤ，Ｈ２Ａ）与三苯基氧化膦（ＴＰＰＯ，Ｂ）的氯仿溶液从硝酸介质中对Ｓｍ（Ⅲ）的协同萃取行为，计算了体系的酸性协萃系数ＲＡ和协萃系数Ｒ，用斜率法测得协萃合物的组成为ＳｍＡ·ＨＡ·Ｂ，计算了协萃平衡常数，用萃取法制得了固态协萃合物，并对其组成、ＩＲ及ＴＧ－ＤＴＡ进行了研究     

N1923从碱性氰化液中萃取金(Ⅰ)的研究

采用放射性同位素１９８Ａｕ示踪法研究了伯胺Ｎ１９２３和ＴＢＰ从碱性氰化液中萃取金（Ⅰ）,考察了酸化率、水相ｐＨ值、萃取剂浓度等对萃取率的影响,以及ＮａＯＨ对载金有机相的反萃作用。结果表明,ＴＢＰ含量大于２０％,酸化的Ｎ１９２３与ＫＡｕ（ＣＮ）２摩尔比值在１：１时,金能够完全被萃取。载金有机相可采用０．ｌｍｏｌ·Ｌ－１的Ｎａ０Ｈ溶液定量反萃。机理研究表明,伯胺和ＴＢＰ萃取Ａｕ（ＣＮ）２－,符合ＢＣ类协同萃取机理。当金浓度大于１０ｇ·Ｌ－１时,在萃取有机相中形成纳米级的聚集体。     

BTMPPA与HPMBP协同萃取稀土元素（Ⅲ）的研究

研究了二（２，４，４－三甲基戊基）膦酸（ＢＴＭＰＰＡ，ＨＬ）和１－苯基－３－甲基－４－苯甲酰基吡唑酮－５（ＨＰＭＢＰ，ＨＡ）的苯溶液在不同矿物酸介质中，对稀土元素（Ⅲ）的ＡＡ类协同革取。以Ｎｄ￣（３＋）、Ｙｂ￣（３＋）为例，研究了ＢＴＭＰＰＡ－ＨＰＭＢＰ苯溶液从ＨＮＯ＿３介质中协同萃取稀土元素（Ⅲ）的机理。用斜率法确定了协萃配合物组成为Ｎｄ（ＨＬ＿２）Ａ＿２、Ｙｂ（ＨＬ）２）＿２·Ａ·ＨＡ，计算了协萃平衡常数。     

1,9—双（1′—苯基—3′—甲基—5′—氧代吡唑—4′—基）壬二酮—（1,9）与三？…

研究了１，９－双（１′－苯基－３′－甲基－５′－氧代吡唑－４′－基）壬二酮－（１，９）（ＢＰＭＰＮＤ，Ｈ２Ａ）与三辛基氧膦（ＴＯＰＯ，Ｂ）的氯仿溶液，从硝酸介质中对Ｌａ（Ⅲ），Ｄｙ（Ⅲ）的协同萃取，计算了体系的酸性协萃系数ＲＡ和协萃系数Ｒ，用斜率法测得协萃合物的组成ＬａＡ．ＨＡ．Ｂ和ＤｙＡ．ＨＡ．Ｂ计算了协萃取平衡常数，研究了温度对协萃反应的影响，用萃取法制得了固态协萃合物，并对其组成，ＩＲ及ＴＧ     

稀释剂对N,N-二丁基十二酰胺萃取硝酸平衡的影响

本文研究了新萃取剂Ｎ，Ｎ二丁基十二酰胺（ＤＢＤＯＡ）萃取硝酸的机理。考察了不同稀释剂如：二甲苯、甲苯、四氯化碳、正辛烷、苯、环己烷、氯仿等对萃取平衡的影响，分析了萃取有机相的红外光谱。得到在不同稀释剂中萃取反应均为：ＨＮＯ３＋ＤＢＤＯＡ（０）＝ＨＮＯ３·ＤＢＤＯＡ（０）利用不同的稀释剂参数与萃取平衡常数进行了关联，发现任一参数都难以定量描述稀释剂的影响。     

Extraction of uranium(VI) with N,N,N′,N′-tetrabutylmalonamide and N,N,N′,N′-tetrahexylmalonamide

A new diamide N,N,N′,N′-tetrahexylmalonamide (THMA) was synthesized, characterized and used in the extraction of U(VI) from nitric acid solutions. N,N,N′,N′-tetrabutylmalonamide (TBMA) was also studied to test the steric hindrance. Factors affecting this extraction system, the concentration of the extractant, aqueous nitric acid and NaNO₃ and the temperature were investigated. The IR spectral study was also made of the extracted species.     

N,N′-dialkyl-N,N′-dinitrosulfodiamides

N,N-dinitrosulfodiamides are formed in the nitration of sulfodiamides with concentrated nitric acid or nitronium borofluoride, and also on substitutional nitration of the corresponding N,N-di-tert.-butyl derivatives with those reagents. Sulfuryl chloride reacts with the disodium salt of ethylene N,N-dinitramine to produce 2,5-dinitro-1,2,5-thiadiazolidine-1,1-dioxide. The corresponding N-nitrosulfamides are formed when nitramine salts react with methane sulfochloride.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1812–1815, August, 1989.     

Isomerization of N,N,N′-trifluoroalkylamidines

Conclusions The syn-isomers of N,N,N-trifluorobutyramidine and N,N,N-trifluoromonochloroacetamidine are isomerized in the presence of HCl to the anti-form. The isomerization of the syn-isomer of N,N,N-trifluoromonochloroacetamidine also proceeds in the presence of ethanol.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 2159–2160, September, 1973.     

Synthesis of Five-Membered N,N,N- and N,N,N,N-Heterocyclic Compounds: Applications of Microwaves

The development of new strategies for the synthesis of small-sized heterocycles has remained a highly attractive but challenging proposition. An overview of the application of microwave irradiation to the synthesis of five-membered heterocyclic compounds containing three and four nitrogen atoms is presented, focusing on the developments in the past 5–10 years. This contribution covers the literature concerning the total synthesis of N,N,N- and N,N,N,N-heterocycles. The literature data are summarized based on the size and type of cycles.     

Synthesis of asymmetrical N,N′-disubstituted N,N′-dinitromethylenediamine

Conclusions Syntheses are reported for asymmetric N,N-disubstituted N.N-dinitromethylenediamines by the Mannich reaction from N-nitroalkylamines, formaldehyde, and 2-fluoro-2,2-dinitro-ethylamine in methanol or ethanol.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 721–723, March, 1989.     

N, N, N′, N′-四丁基丙二酰胺萃取Pr3+的研究

利用丙二酸二乙酯与二正丁胺反应高收率的制备了N，N，N′，N′-四丁基丙二酰胺(TBMA)萃取剂。研究了硝酸浓度、硝酸锂浓度、萃取剂浓度以及温度等对萃取Pr(Ⅲ)分配比的影响，确定了萃合物的组成，得到了不同稀释剂中萃取反应的热力学数据。结合红外光谱和摩尔电导数据初步推断了萃合物的结构。