（四甲基二硅撑）双（3—三甲硅基环戊二烯基）—四羰基二铁…

标题化合物（Ｍｅ２ＳｉＳｉＭｅ２）〔η＾５－（３－Ｍｅ３ＳｉＣ５Ｈ３）Ｆｅ（ＣＯ）２〕２／（μ－ＣＯ）２（Ａ）分子中的Ｆｅ－Ｆｅ键被钠汞齐还原断裂，生成相应的双铁负离子，分别与ＭｅＣＯＣｌ、ＰｈＣＯＣｌ、ＰｈＣＨ２Ｃｌ、ＣｌＣＨ２ＣＯＯＣ２Ｈ５和Ｐｈ３ＳｎＣｌ进行亲核取代反应，生成在铁原子上引入相应取代基的产物（Ｍｅ２ＳｉＳｉＭｅ２）〔η＾５－（３－Ｍｅ３ＳｉＣ５Ｈ３）Ｆｅ（ＣＯ）２Ｒ〕２（Ｒ：Ｍ     

应用CS2在Ag—S键中的插入反应生成新型Ag原子簇化合物研…

应用ＣＳ２在Ａｇ－Ｓ键中的单核插入物（ＰＰｈ３）２Ａｇ（Ｓ２ＣＳＰｒ３＾ｉＣ６Ｈ２）与ＣＨ２Ｃｌ２－Ｐｒ＾ｉＯＨ混合溶剂反应，生成了一个中性的三核银簇合物，并用Ｘ射线单晶衍射法测定了其晶体结构。     

甲烷与二氧化碳重整制取合成气反应的研究

合成了具有磁铅石结构的Ｓｒ１－ｘＬａｘＮｉＡｌ１１Ｏ１９系列催化剂，并用ＸＲＤ、ＵＶ－ＤＲＳ、Ｈ２－Ｏ２滴定及Ｐｙ－ＩＲ等方法对其体相及表面性质进行了表征，结果表明，Ｌａ＾３＋离子能够同晶取代Ｓｒ＾２＋离子进入催化剂晶格内部；随着Ｌａ＾２＋含量增加，催化剂的结晶度提高，从而降低了镍的还原性，并使金属镍的表面上的分散度略有提高，在ＳｒＮｉＡｌ１１Ｏ１９中掺入Ｌａ＾３＋离子，能够抑制晶体沿ｃ轴方向的生     

担载型钌催化剂吸附CO性能的原位红外研究

用原位红外研究了ＣＯ的吸附与脱附，ＣＯ／Ｈ２的共吸附及反应，考察了焙烧温度对Ｒｕ／Ａｌ２Ｏ３及Ｒｕ／ＳｉＯ２催化剂的影响，结果表明，经不同温度焙烧的催化剂样品，其吸附性能有很大差别。随着焙烧温度的升高，金属－载体相互作用增强，导致ＣＯ吸附量减少。Ｒｕ／Ａｌ２Ｏ３吸附的ＣＯ较稳定，而Ｒｕ／ＳｉＯ２吸附的ＣＯ在高温易脱附。各不同ＣＯ吸会态间、多重态更易发生反应。在未焙烧的Ｒｕ／ＳｉＯ２低ＣＯ／Ｈ２反应     

在小硅化物SiX^m4（X=H,He,Li,Be,O,F,Ne,Na,Mg,S,Cl,Ar;m=0,…

用从头算方法，在ＨＦ／ＳＴＯ－３Ｇ、ＨＦ／３－２１Ｇ和ＨＦ／６－３１Ｇ水平上研究了小硅化物ＳｉＸ＾ｍ４的成键倾向性。计算结果表明，所研究的分子势能曲线均有稳定的极小值（ＳｉＬｉ４除外）。与已知的稳定分子ＳｉＨ１、ＳｉＦ４和ＳｉＣｌ４比较，含惰性元素的未知分子ＳｉＨｅ＾４＋４、ＳｉＮｅ＾４＋４和ＳｉＡｒ＾４＋４比含碱金属和碱土金属的未知分子ＳｉＬＩ４、ＳｉＮａ４、ＳｉＢｅ＾４＋４和ＳｉＭｇ＾４＋４有     

含硅二硫代磷酸酯的合成及生物活性

硅基甲硫醇Ｒ＾１Ｒ＾２ＣＨ３ＳｉＣＨ２ＳＨ与Ｏ，Ｏ－二烷基二硫代磷酸酯（ＲＯ）２Ｐ（Ｓ）ＳＨ及甲醛可顺利地发生类Ｍａｎｎｉｃｈ缩合反应，利用此反应和硅基甲硫醇与Ｏ，Ｏ－二乙基－Ｓ（２－溴乙基）二硫代磷酸酯的取代反应合成了３７种新的含硅二硫代到酯化合物（ＲＯ）２Ｐ（Ｓ）Ｓ（ＣＨ２）ｎＳＣＨ２ＳｉＣＨ３Ｒ＾１Ｒ＾２（ｎ＝１，２），在初筛浓度下，该类化合物具有一定的杀虫，杀螨活性。     

Pd2X2（dpm）2（X=NCO^—,CH3CO2^—,SCN^—,NO^—3;dpm=Ph2PCH2PPh2）配合…

采用ＮＭＲ方法考察了室温和低温（－７８～－６０℃）下Ｐｄ２Ｘ２（ｄｐｍ）２（Ｘ＝ＮＣＯ＾－，ＣＨ３ＣＯ＾－２，ＳＣＮ＾－和ＮＯ＾－３，ｄｐｍ＝Ｐｈ２ＰＣＨ２ＰＰｈ２）与Ｈ２Ｓ在ＣＤ２Ｃｌ２或ＣＤＣｌ３中的反应。结果表明，在Ｘ＝ＮＣＯ＾－和ＣＨ３ＣＯ＾－２的情况下，Ｈ２Ｓ优先与这些Ｐｄ配合物的阴离子作用生成相应的共轭酸ＨＸ和Ｐｄ２（ＳＨ）２（ｄｐｍ）２，后者在Ｈ２Ｓ存在下又进一步转化为Ｐｄ２（ＳＨ）     

NiW／γ—Al2O3加氢催化剂化学吸附性质的研究

采用脉冲色谱法测定了噻吩在硫化态ＮｉＷ／γ－Ａｌ２Ｏ３催化剂上化学吸附过程中热力学函数的变化，并与噻吩加氢脱硫（ＨＤＳ）反应活性进行了关联。结果表明，噻吩在硫化态ＮｉＷ／γ－Ａｌ２Ｏ３催化剂上的吸附不能太强，催化剂中的Ｎｉ可以降低噻吩在催化剂表面上的吸附强度，增加ＨＤＳ反应生中心的数目。     

镓（III）—芦丁极谱络合吸附波的研究

在（ＣＨ２）６Ｎ－ＨＣｌ缓冲底液中，获得了Ｇａ（ＩＩＩ）－芦丁的络合物吸附催化前波，检出限达１．０×１０＾－８ｍｏｌ／Ｌ。用其测定了以ＳｉＯ２，Ａｌ２Ｏ３为基体的催化剂中的镓。研究了其电极过程机理。     

固相法合成中温固体电解质La-Bi-Al-O和La-Bi-Al-Zn-O系列材料

采用固相合成法合成了Ｌａ－Ｂｉ－Ａｌ－Ｏ和Ｌａ－Ｂｉ－Ａｌ－Ｚｎ－Ｏ系列材料，确定了其物相为ＬａＡｌＯ３，ＢｉＡｌＯ３和Ａｌ４Ｂｉ２Ｏ９的混合相。在Ｌａ－Ｂｉ－Ａｌ－Ｚｎ－Ｏ系列材料中，Ｚｎ＾２＋加入到ＬａＡｌＯ３和ＢｉＡｌＯ３的晶格中，且可使材料的导电率进一步增高。     

阴离子协同组装折叠体

折叠体研究的目的是设计、合成和表征具有折叠结构的人工合成寡聚物,这些折叠体的折叠结构和自然界中的生物大分子如蛋白质的结构相似但不雷同。折叠体的研究发展为分子识别特别是阴离子识别提供了一个简单而非常有效的工具。本综述将主要介绍近几年国内外关于阴离子协同组装的折叠体的研究进展,探讨了折叠体和阴离子的相互作用规律。     

Macrocyclic Weakly Coordinating Anions

Herein, the concept of macrocyclic weakly coordinating anions (M‐WCAs) is introduced. Synthetic methodologies are described how to access M‐WCAs by thermodynamically controlled self‐assembly in high yields, in particular through condensation and alkyne metathesis reactions. The anticipated properties and applications of M‐WCAs in solid state and in solution are discussed, specifically for gas storage and separation, homogeneous and heterogeneous catalysis, and as liquid and solid electrolytes.     

Halogen Bonding Between Anions: Association of Anion Radicals of Tetraiodo-p-benzoquinone with Iodide Anions

Halogen bonding between two negatively charged species, tetraiodo-p-benzoquinone anion radicals (I₄Q^−.) and iodide anions, was observed and characterized for the first time. X-ray structural and EPR/UV–Vis spectral studies revealed that the anion–anion bonding led to the formation of crystals comprising 2D layers of I₄Q^−. anion radicals linked by iodides and separated by Et₄N⁺ counter-ions. Computational analysis suggested that the seemingly antielectrostatic halogen bonds in these systems were formed via a combination of several factors. First, an attenuation of the interionic repulsion by the solvent facilitated close approach of the anions leading to their mutual polarization. This resulted in the appearance of positively charged areas (σ-holes) on the surface of the iodine substituents in I₄Q^−. responsible for the attractive interaction. Finally, the solid-state associations were also stabilized by multicenter (4:4) halogen bonding between I₄Q^−. and iodide.     

无机阴离子的毛细管电泳分析

本文研究了常见无机阴离子的毛细管电泳规律，考察了分离电压、电解质熔液组成、浓度、ｐＨ值等对分离的影响，建立了高效、快速的无机阴离子毛细管电泳分析方法。在选定的实验条件下，各种常见无机阴离子在５ｍｉｎ内达到完全分离，对Ｂｒ＾－和Ｃｌ＾－的分离柱效每米可达７６万理论板数。迁移时间的相对标准偏差小于１％，峰面积的相对标准偏差小于５％，各离子的最低检测浓度为０．０５￣０．５μｇ／ｍｌ。     

Chalcogenocarbonic Acids and Their Anions

Carbonic acids in which the oxygen has been wholly or partly replaced by sulfur, selenium, and/or tellurium are known as “chalcogenocarbonic acids”. The aim of the present article is to review existing knowledge of these acids and so establish a basis for further systematic syntheses. The anions required for the synthesis of chalcogenocarbonic acids will also be briefly characterized.     

Compounds of Alkali Metal Anions

Anions of sodium, potassium, rubidium, and cesium are stable both in suitable solvents and in crystalline solids. The latter can be prepared either by cooling a saturated solution or by rapid solvent evaporation. Thermodynamic arguments show that alkali metal anions can probably exist in saturated solutions of the alkali metals in any compatible solvent, but that below saturation, dissociation into the cation and solvated electrons is favored in highly polar solvents such as ammonia. The key to solvent-free salts of the alkali metal anions is stabilization of the cation by incorporation into a suitable crown or cryptand complex. By using such complexes it also appears possible to produce “electride” salts in which the charge of the complexed cation is balanced by a trapped electron. The chemical, electrical, and optical properties of salts of the alkali metal anions and “electrides” could provide useful applications.     

Multiply Charged Helium Droplet Anions

The detection of multiply charged helium droplet anions is reported for the first time. By ionizing droplets of superfluid helium with low energy electrons (up to 25 eV), it was possible to produce droplets containing up to five negative charges, which remain intact on the timescale of the experiment. The appearance sizes for different charge states are determined and are found to be orders of magnitude larger than for the equivalent cationic droplets, starting at 4 million He atoms for dianions. Droplets with He*⁻ as charge carriers show signs of being metastable, but this effect is quenched by the pickup of water molecules.