反式构型

计算结果表明，NMF的顺式和反式构型都可以与水分子形成线型的氢键结构。

The results show that both cis - and trans - form of NMF can form a linear hydrogen bond with water .

按照EHMO方法，计算了聚乙烯链段取近邻规则折迭构型的能量以及取全反式构型的能量，并进行了比较和讨论。

The energy of regular adjacent reentry conformations as well as that of all trans-conformation in polyethylene chain segment was calculated by means of EHMO method . Their results were compared and discussed .

结果表明，在不同基组水平上，由MP2，QCISD，B3LYP方法均能得到草酰碘分子的交叉式构型和平面反式构型，与实验所得草酰卤化物的构型完全相符。

The result shows that MP2 , QCISD , B3LYP can gain the gauche and anti conformers of oxalyl iodide , which is in good agreement with configuration of oxalyl halides in experiment .

提高温度和延长反应时间都会增加聚酯中反式构型的含量。

Increased temperature and duration of polyesterification increased the trans-content of the polyester obtained .

反式构型铂配合物抗癌药物研究进展

Research Progress in Trans Platinum Antitumor Drugs

这些剩余的双键就由天然的顺式构型转化为反式构型。

These double bonds are transformed from the natural " cis " configuration to the " trans " configuration .

铜（Ⅱ）及镍（Ⅱ）的配合物是反式构型，具有五元环的氢键桥，红外吸收较明显。

However , Cu (ⅱ) or Ni (ⅱ) complex possesses trans configuration with five membered hydrogen-bonding bridge showing characteristic OH absorption band in the infrared region .

含芳香族氨基酸的二肽抑制剂中的肽键的氨基和苯环部分羟基端呈反式构型，它们相隔7个键位。

The amide of the peptide bond in the Dipeptide inhibitors which included aromatic series amino acid showed trans configuration with the hydroxide of the benzene ring . There were seven bonds between them .

丁二烯链节的微观结构基本上是反式-1,4构型。

Butadiene unit in copolymers is exclusively in trans-1,4 structure .

计算结果表明，标题物Ⅰ和Ⅲ为反式弯曲几何构型，Ⅱ为弯曲几何构型，Ⅳ为线性平面分子。

The calculated results show that titled compounds ⅰ and ⅲ have a trans-bent geometry ,ⅱ has a bent geometry ,ⅳ has a planar geometry .

研究LCP-POSS溶液的紫外光致异构行为，发现随着紫外光照时间增加，LCP-POSS的偶氮基元发生由反式向顺式构型的转变，其吸光强度逐渐降低。

The trans-isomers of azobenzene moieties in LCP-POSS were gradually transformed to cis-isomers with increasing the UV-irradiation time , accompanied by a decrease in the absorbance .

以4a佛石作催化剂时，生成的别罗勒烯有4反.6反式及4反，6顺式构型。

When4a zeolite was used as catalyst , alloocimenols prodused were the4and6trans types and the4-trans , 6 CIS type .