非异构的

However, the formation of metal chelation at one or two side of biphenyl resulted a pair of enantiomers of monometallic or bimetallic complexes. Moreover, if the coordinating groups have chiral element (e.g., chiral oxazolines), the diastereomeric metal complexes will be formed.

而且，如果配位基团上带有手性元素，它们跟金属配位后得到一对非对映异构体，由于手性元素的影响，形成这一对非对映异构体的能量是有差异的。

In these solvents there is an equilibrium for 2-(2-mercaptophenyl)benzoxazole in the ground state between E1 and K, and the equilibrium shifts toward the tautomer K as the polarity of the solvent increases.

在溶液中，随着溶剂极性的增强，醇式异构体E1与K之间的反应平衡向K方向移动，在非极性溶剂环己烷中， E1为优势构型，而在强极性水溶液中， K为优势构型。

In addition ,nine new O,O-dialkyl-[α-(1,3,4,6-tetraacetyl-2-deoxy-β-D-glucoamino)-p-methyl benzlidene] phosphonatesand eight O,O-dialkyl-α-(2-deoxy-D-glucoamino)-p-methyl benzylidene phosphonates were prepared. The 〓 and〓 spectra of Ⅰ-Ⅴ compounds indicated clearly that each of Ⅰ-Ⅴ compounds contains two diastereo-isomers.

我们对非对映异构体的分离方法进行了研究，并分离得到了五个单一构型的异构体〓、〓、〓、〓和〓，培养出了〓、〓和〓三个异构体的单晶，通过X-射线衍射分析，确定了〓、〓和〓三个异构体的绝对构型，反应过程中引入的手性原子的构型均为R构型。

Treatment of dials with N-tert-butanesulfinamide, all biaryl dials were successfully converted into the corresponding bis-imines which were then treated with samarium diiodide to afford diamine products. The absolute configurations of all the intramolecular coupling products were determined by X-ray crystallography.

轴手性二醛与N-叔丁基亚磺酰胺缩合得到相应的亚胺，其为一对非对映异构体。N-叔丁基亚磺酰亚胺在二碘化钐条件下得到的偶联产物，经X-衍射也确定了其立体构型。

It was found that manganese porphyrins linked with stable nitroxyl radials could oxidize sulfides using NaOCl as the oxidant to give the corresponding sulfoxides in good to excellent yields (80-97%) with high chemoselectivity and diasteroselectivity (dr≥7:1 for glycosyl sulfoxides).

发现连有稳定氮氧自由基的卟啉锰络合物对NaOCl选择性氧化各种硫醚底物有较好的催化效果，获得了高的产率(80％～97％)、化学选择性和非对映选择性(糖基亚砜非对映异构体的比例大于7：1)。

First the NHBL model (Nondedicated Heterogeneous Barrier LogGP model) has been introduced, and it is based on LogGP model . But LogGP doesn't be considered nondedication and heterogeneity between nodes, so it can't be used to describe the parallel computing time accurately.

论文首先对非独占、异构、同步的NHBL(Nondedicated Heterogeneous Barrier LogGP model)模型做了详细地介绍，NHBL是基于LogGP模型提出的，LogGP模型没有考虑到节点的异构和非独占性，不能很好的对并行计算的时间开销进行描述。

The invention includes all sterioisomeric forms, including individual diastereoisomers and enantiomers of the compound of formula as well as racemic and non-racemic mixtures thereof.

本发明包括式化合物所有的立体异构形式，包括单个的非对映异构体和对映异构体，及其外消旋的和非外消旋的混合物。

To realize network interoperability is a pressing problem, but limitations and unfeasibility exist in the interoperability of telecom services between broadband heterogeneous networks while using existing techniques.

文章针对现有网络互通的现实要求，分析了现有技术手段解决电信业务在宽带异构网络间互通的局限性和非可行性，提出了一种在软交换体系下宽带异构网络间的互通模型和实现方法，并给出了采用此方法的两个互通实例，最后阐明了该方案的具体优点和现实可行性。

Mass spectrometry results revealed that the pair of eluents respresented a pair of ternary copper complexes with mixed ligands, providing the first experimental evidence. These complexes are diastereoisomer in nature. The optimized configuration of the diastereoisomer was predicted by theoretical calculation.

质谱实验结果表明，拆分组分是一对铜混合配体复合物离子，其中的一个配体是提供手性环境的流动相添加物，另一配体是待拆分物质的某一构型对映体，这对铜混合配体复合物离子本质上属于非对映异构体。

Many studies dealing with chiral drugs which are administered as their racemates rely on non-stereoselective analytical techniques. It was shown that the use of such an analytical method can lead to the collection of data which may be both quantitatively and qualitatively inaccurate with respect to the individual enantiomers.

一般非对掌选择性的药物分析条件，得到的药物血中浓度是个别镜像异构物的总和，而非个别镜像异构物的血中浓度，因此并无法对於对掌性药品的立体选择性动态学做定性或定量的探讨。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。