二原子金属的

Generally speaking, the reaction types involvingα-oxoketene--acetals mainly include the regioselective addition-aromatization with organometallic reagents, conjugate addition-cyclization with nitrogen nucleophilicspecies, nucleophilic reactions ofα-carbon, acting as odorless dithiol equivalentsin thioacetalization, Michael additions and [5+1] annulation, as well as the synthetic applications based on the above reactions.

一般来说，基于α-羰基二硫缩烯酮化学的反应主要为：与金属有机试剂的选择性加成反应，与氮亲核体的共轭加成反应，α-碳原子的亲核性及相关反应，烷硫基作为硫醇的替代试剂的应用，α-羰基二硫缩烯酮在碳环、杂环化合物合成中的应用等。

It indicates that the N—O bonds in the singlet dimer adsorption configurations are weaker than any other structures, and this is propitious to the NO direct decomposition. 7. Unlike NO molecules interaction with copper atoms, when two NO molecules interact with the adjacent silver atoms, the non-planar structures are more stable than the planar.

同时，单重态的二聚体与相邻的金属铜和银原子作用时，由于电子从金属原子转移到二聚体上的数量最多，因此在这种吸附构型中，金属原子被离子化的倾向最大，同时使得二聚体中N—O键被削弱的程度也最大，有利于NO的直接分解； 7。

The electrochemical property of PDT and PDT metal complexes were characterized by CV, from the result of CV, it can be found that PDT and PDT metal complexes possesses electrochemical activity, which arised from the heteroatom of molecules.

我们用循环伏安表征了对二苯甲醛缩氨基硫脲及其金属络合物的电化学性质，从循环伏安的结果来看，对二苯甲醛缩氨基硫脲及其金属络合物具有一定的电化学活性，并且这些电化学活性主要来自于分子中的杂原子。

The results showed that the mole ratio of three ligands to CoCl_2, NiCl_2 were 1:1 and to CuCl_2, ZnCl_2, CdCl_2 were 2:1, The IR, UV-Vis and FS of complexes were investigated. Their IR peaks were classified as the corresponding groups or bonds; The relation of their structure with the conjugative effects, absorbtion wavelength and molar absorb coefficients were discussed with the UV-Vis and FS.

结果表明：噻唑类配体与金属CuCl_2，CdCl_2配位比分别2∶3和3∶2，至于配位机理还需进一步探讨；硒二唑配体与CoCl_2和NiCl_2配位比均是1∶1，而与CuCl_2、ZnCl_2和CdCl_2的配位均为比2∶1；对配合物的IR吸收峰进行了归类与指认，并对配合物的紫外和荧光光谱进行讨论分析，推测硒二唑类化合物与金属发生配位的部位是v中Se原子与金属配位。

Based on reviewing of functionalization of saturated carbon by catalytic oxidation with metalloporphyrins and metal phthalocyanines as a mimic of the enzyme cytochrome P-450, two reaction systems of which one was the preparation of 4, 4'-dinitrostilbene-2, 2'-disulfonic acid from 4-nitrotoluene2-sulfonic acid and the other was the preparation of 4, 4'-bis (dimethylamino -diphenyl) phenylmethanol from 4, 4'-bis (dimethylamino-diphenyl) phenyl methane , were specifically studied as carfunctionalization and oxyfunctionalization of saturated carbon.

本文在全面综述金属卟啉和金属酞菁类模拟细胞色素P-450酶催化剂催化氧化饱和碳原子功能化的基础上，选择由4-硝基甲苯-2-磺酸制取4，4'-二硝基二苯乙烯-2，2'-二磺酸和由4，4'-二苯基甲烷制取4，4'-二苯基甲醇两个反应体系进行饱和碳原子碳功能化和氧功能化的具体研究。

The structure of the compound 〓(1) consists of a pentanuclear molecule which is center-symmetric. One W atom is coordinated by four S atoms and two Cu atom. As expected, the Fe atoms are sandwiched between two staggered pentadiene rings. The most interesting aspect of the structure is that Fe-C-P-Cu-P-Cconstitutes a distorted hexagon and Fe-Cu-W-Cu-Fe is nearly in a line.

结构是以W原子为对称中心含有五个金属原子的线型结构，W原子与四个μ〓-S和两个Cu原子配位；Fe原子在两个戊二烯环中间形成一个三明治夹心结构；Fe〓-C〓-P〓-Cu〓-P〓-C〓-构成扭曲的六边形，由于两边1，1'-双二茂铁配体的作用导致Cu-S键的拉长。

The results showed that terephthalic acid in the carboxyl oxygen and the phenanthroline nitrogen atoms with transition metal ions (Co2 +, Cu2 +, Fe3 +) coordination.

结果表明，对苯二甲酸中羧基氧和邻菲罗啉中的氮原子均与过渡金属离子（Co2+、Cu2+、Fe3+）配位。

In order to get the information of interaction between metal complex and DNA and select metal complexes which can cleave DNA effectively, twenty seven transition metal complexes containing O/N coordinate atoms have been synthesized in this thesis. We report the synthesis, crystal structure and properties of the complexes. One of the complexes is the first μ〓-oxalato tetranuclear Cu complex, in which there is ferromagnetic interaction between the copper atoms bridged by oxalate ions. Two trinuclear copper complexes containing partial cubane Cu〓O〓 cores have been synthesized and discussed the magnetic properties.

为了解金属配合物与DNA的相互作用及筛选能有效切割DNA的金属配合物，为无机药物合成及应用提供基础信息，本文利用十个含N、O原子的多齿配体设计合成了二十七个未见文献报道的过渡金属配合物，并解析了它们的晶体结构：其中包括首例μ〓-草酸根的四核铜配合物；合成了两个具有μ〓-OH〓三核缺角立方烷结构的Cu配合物；以HCBP衍生物为配体合成了七个过渡金属配合物；以SCN〓、N〓，C〓O〓等为桥联配体，以dmpyen为端基配体合成了十一个配合物。

The geometric and electronic structures of the unreduced and reduced Pt-doped ceria with different doping concentration are systematically studied using the first principles method based on the density functional theory with the inclusion of on-site Coulomb interaction.

本文用基于密度泛函理论的第一性原理方法，并考虑了Ce4f电子的在位库仑作用（on-site Coulomb interaction），计算并分析了不同浓度金属Pt掺杂对二氧化铈原子结构、电子结构和化学特性的影响。

Atoms have wave character therefore two dimension atom probability standing wave may be obviously observed inside quantum corrals .

量子围栏是以原子为材料在金属表面构成的闭合图案，由于电子具有波动性，因此，在量子围栏内可明显观察到二维电子概率驻波。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。