异构体

This paper deals with the preparation of synthetic diamond single crystal with boron at high temperature and high pressure from Fe-Ni-C-B system.

1前言石墨转变为金刚石是碳的同素异构体转变，由于触媒的参与使之合成压力与温度大幅度降低。

One compound is identified as the title compound 2-benzyloxy-5-fluoro-4-oxo-pyrimidine-3-butyric acid ethyl ester, and the other one is its formula isomer.

通过IR谱确证一个化合物是目标物2-苄氧基－5-氟－4-嘧啶酮－3-丁酸乙酯，另一化合物是它的同分异构体。

Cisatracurium is one of the stereoisomersof atracurium.

顺式阿曲库铵是阿曲库铵的一个同分异构体。

In the third part, MP2 and B3LYP methods are employed to study the relative stabilities of conformers of N-Cl glycine using 6-311 G** basis set.

第三部分采用了MP2和B3LYP方法在6-311 G**基组水平下研究了13种N-Cl甘氨酸异构体的相对稳定性。

The stability of PBPTH congeners was theoretically proposed based on the relative magnitude of their .

根据 的相对大小，从理论上求得异构体的相对稳定性顺序。

The congeners distribution presented great comparability to each other as 1,2,3,7,8-PeCDD and 2,3,4,7,8-PeCDF contributed about 33.6%～40.5% of total TEQ.

二英异构体的分布具有相似性，其中1，2，3，7，8-PeCDD和2，3，4，7，8-PeCDF共占毒性当量的

The values of ΔfH$ and ΔfG$ of PCPhen congeners with the same number of chlorine atoms show a strong dependence on the positions of chlorine atoms.

具有相同数目氯原子的多氯代菲异构体的ΔfH$和ΔfG$与氯原子的取代位置有很大的关系。

Alkylation of C6D6 with 1-dodecene using Br-ALCl3 as a catalyst was firstly carried out. Molecular structures of products, dodecylbenzene isomers, were analyzed by GC-MS and NMR, and the deuterated atom in the dodecylbenzenes was verified to be connected with 1-carbon of the side chain.

首先进行了Br-AlCl3催化氘代苯与1-十二烯烃的反应，通过GC-MS及NMR分析产物十二烷基苯同分异构体的结构，验证了氘原子与产物侧链1-位碳相连的结论。

The structures of the isomers were assigned by using 2D NMR techniques such as gCOSY. Comparing to the eluates from the chromatographic column, the first band contains the m2, the second band contains the ml.

利用一维及二维核磁共振(2D NMR)技术，结合三元胺中吡啶环的磁屏蔽效应，对两个异构体在溶液中的结构进行了解析，对应于Dowex 50Wx 2柱色层分离的第一包带的H离子为n2(cmen的2位胺基与Cl处于邻位)：第二色带的阳离子为ml。

This method can be applied in qualitative and quantitative analysis for Sitafloxacin epimers.

该方法可用于西他沙星差向异构体的定量分析。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。