碳团簇的结构及其演进

碳团簇是一种新型的碳材料,自20世纪80年代被发现以来,就以其独特的结构和优越的性能而在科学界掀起了研究狂潮。碳团簇的范畴非常广泛,小到气相中的单个碳原子,大到富勒烯、碳纳米管、碳纳米锥、石墨烯等都可以看作是碳团簇的存在形式。研究碳团簇的结构及其演进,解开碳团簇形成机理之谜,对开拓新型碳团簇材料的结构和应用都具有重要意义。本文对碳团簇的结构及其演进过程进行了回顾,并概述了目前碳团簇的合成方法、碳团簇结构的表征手段以及碳团簇演进的研究现状。国家自然科学基金项目(No.21721001,51572231)资助~

Synthetic Chemistry of Fullerenes

通讯作者地址: Deng, SL (通讯作者), Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 2. Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 电子邮件地址: [email protected][中文文摘]富勒烯是一类由12 个五元环和若干六元环组成的笼状分子，自20 世纪80 年代中期被发现 以来就以其独特的结构和新奇的性质而成为科学界研究的热点，25 年来，无论在基础研究还是在实际应用 领域都有了长足的进步，人们在发展富勒烯合成新方法和寻找富勒烯新结构方面做了大量的工作。本文对 富勒烯的各种宏量合成方法进行了回顾，并概述了迄今已发表的60 余种富勒烯新结构，包括各种富勒烯空 笼、内嵌富勒烯、富勒烯笼外修饰衍生物及氮杂富勒烯等结构。[英文文摘]Fullerenes are a class of cage-like molecules made of hexagons and exactly twelve pentagons. Since the discovery of fullerene in the middle of 1980's, the chemistry of fullerenes has become a flourishing field as a result of their unique structures and remarkable properties. In the past twenty-five years, significant progress has been achieved in both fundamental and practical fields. Efforts have been made to improve synthetic efficiency and to synthesize new species of fullerene cage. Herein we review the methods for fullerene synthesis and the novel cage geometries (more than 60 fullerene structures) that have been retrieved and characterized to date. Advances in the production, separation and characterization of various fullerenes are presented, including hollow fullerenes, endohedral fullerenes, exohedral derivatives of fullerenes and azafullerenes

Synthetic Chemistry of Fullerenes

Fullerenes are a class of cage-like molecules made of hexagons and exactly twelve pentagons. Since the discovery of fullerene in the middle of 1980's, the chemistry of fullerenes has become a flourishing field as a result of their unique structures and remarkable properties. In the past twenty-five years, significant progress has been achieved in both fundamental and practical fields. Efforts have been made to improve synthetic efficiency and to synthesize new species of fullerene cage. Herein we review the methods for fullerene synthesis and the novel cage geometries (more than 60 fullerene structures) that have been retrieved and characterized to date. Advances in the production, separation and characterization of various fullerenes are presented, including hollow fullerenes, endohedral fullerenes, exohedral derivatives of fullerenes and azafullerenes

等离子体反应合成全卤代

用聚四氟乙烯电弧蒸发和氯仿蒸气辉光放电方法合成了一系列全卤代芳香化合物，分离和表征了其中的全氟代芘（Ｃ１６Ｆ１０）和全氯代芘（Ｃ１６Ｃｌ１０），讨论了等离子体反应特征和产物形成机理．研究表明：等离子反应产物的形成不受起始物种、结构、形态和反应介质、放电方式的显著影响，而是形成了一系列结构相似的同系

Synthesis, Isolation and Characterization of Chlorofullerenes

会议地点:中国天津[英文文摘]Chlorofullerenes are valuable reactants for further derivation. The fullerenes chlorides synthesized so far are considerably less than those of bromides and fluorides. To date, only C60Cl6 can be macroscopically synthesized. Here we report a facile synthesis of Ih-C60Cl8 and Ih-C60Cl10, as well as their separation and analyses

Synthesis of Narrow Size Distributional Thiol-Functionalized

会议地点：中国天津[英文文摘]A number of thiol-functional organic microspheres are synthesized via the willisamson reactions of perchlorinated PAHs with the sodium salts of 2,5-dimercapto-1,3,4-thiadizaole, dithioglycol or Na2S·9H2O, respectively. These as-synthesized microspheres can be further functionalized as monodispersed noble metal-nanoparticle-embedded materials

石墨电弧中C5环的原位捕获与形成

五元环是富勒烯的重要构筑基元,是形成凸多面体碳笼的关键因素,研究C5环的形成对理解富勒烯自下而上的生长机理有着重要的意义。该文通过在石墨电弧放电体系中引入氯源,原位捕获到了C5与C60的[4+2]环加成衍生物C60（C5Cl6）。对该分子进行了质谱和紫外-可见吸收光谱的表征,并利用X-射线单晶衍射明确了C60（C5Cl6）的分子结构。此外,还通过一系列C60衍生物的质谱表征,对C5环和C60（C5Cl6）结构的演进路线进行了分析。国家自然科学基金(21721001,21827801和51572231

Structural Recombination of Polymethylsilicone Induced by Laser Plasma

[中文文摘]将脉冲激光束在惰性气氛中溅射石墨产生的等离子体,与一维链状聚甲基硅氧烷的蒸气束流反应 ,在产物中通过真空升华和重结晶分离出了两种单晶,经X射线衍射测定为具有 (CH3SiO1.5) n(n =8,10 )组成的硅氧烷,它们均具有多面体的三维笼状构型 .通过色 -质联用还检测到其它硅氧烷化合物,其中某些产物已表征为二维多环的构型.反应结果表明,经由激光等离子体的碰撞和能量传递,反应物的链状结构发生解离和进一步反应,经结构重组形成了多种不同组成和构型的产物。[英文文摘]A special synthetic reaction has been developed, in which vapor of the reactant interacts with the high temperature plasma generated by laser ablating a graphite target. By selecting chained methylsilicone as reactant, a series of methylsilsesquioxanes products with various structural configurations have been obtained. Among them, two products, which were separated by sublimation in high vacuum and recrystalization, were characterized by X-ray crystal diffraction as (CH_3SiO_ 1.5)_n (n=8,10). Both of them are found to have three-dimensional cage structure.In addition,other products with double ring structure were detected by GC-MS analysis.The results demonstrate the potential application of the synthetic reaction.In the reaction described in this article,resulting from the collision and energy-transfer of the laser plasma,chain structure of the reactant dissociated and recombined to give the cage and ring structure of the product.国家自然科学基金重大项目(29890210)资助课

5-Bromo-2,3-dihydro-1H-cyclo­penta­[a]naphthalen-1-one

The title compound, C13H9BrO, has been synthesized by the intra­molecular Friedel–Crafts reaction of 1-(1-bromo-4-naphth­yl)-3-chloro­propan-1-one. There are two approximately planar [maximum deviations of 0.8 (2) and 0.4 (2) Å in the two mol­ecules] molecules in the asymmetric unit. The dihedral angle between their mean planes is 19.72 (8)°. Weak inter­molecular C—H⋯O hydrogen bonding is present in the crystal structure

1,2,3,4,4b,4c,6,7,8,9,9b,9c-Dodecachloro-4b,4c,9b,9c-tetrahydrocyclobuta[1,2-a;3,4-a']diindene-5,10-dione

The title compound, C18Cl12O2, was synthesized by a solvothermal reaction between sodium and carbon tetrachloride; the oxygen may come from air. The mol­ecule has crystallographic C2 symmetry and contains a four-membered ring, two five-membered rings and two six-membered rings. The five-membered rings are attached to opposite sides of the cyclo­butane group and the six-membered rings are fused to the five-membered rings. In the solid state, the mol­ecule adopts a boat form