吡啶

Degradation products had an apparent characteristic absorption peak at 520 ran, which was caused by the keto form for STCP.

降解产物在525nm处出现的特征峰是STCP的异构体吡啶酮类化合物引起的。

With and without the assistance of one water, ammonia, and methanol molecule, the proton-transfer tautomerisms of 2-hydroxylpyridine are investigated systematically employing the B3LYP/6-311++G** level of theory. Both the keto and hydroxyl form of 2-hydroxylpyridine can exist stably though the keto form is slightly more stable than that of hydroxyl form.

采用量子化学中的密度泛函理论，在B3LYP/6-311++G**计算水平上，系统考察了在水、氨和甲醇分子辅助下，2-羟基吡啶醇式和酮式结构的质子转移异构化行为。

There are four parts:In Part 1,an introduction of fluorescence of lanthanide complexes was given.

第四节中测定了羧酸铜二聚体与2—羟基吡啶中性加合物的结构。

Objective To study diagnostic value of urine deoxypyridinoline to gestational low bone mass.

目的 探讨尿脱氧吡啶酚排泄率对妊娠性骨量减少的诊断意义。

At present, the oil washing process methods domestic uses are washing oil by removing phenol in alkali, removing pyridine and quinoline in acid, getting naphthalene oil, methylnaphthalene oil and heavy oil after distillation.

目前，国内普通采用洗油加工方法是洗油经碱洗脱酚、酸洗脱吡啶和喹啉，蒸馏得萘油、甲基萘油和重油。

In their MS breakdown mechanism, coordination of pyridyl moiety to iron atom is proposed.

在该类化合物的质谱裂解中，发现吡啶环对铁原子存在配位作用。

The ground and excited states of mono- and di-nuclear terpyridyl Pt complexes ＋(1) and (2) were explored by using the first principle based on a DFT method.

采用基于第一性原理的密度泛函理论对单核和双核三联吡啶Pt配合物＋(1)和PtC≡(2)的基态和激发态以及光谱性质进行了系统研究。

A series of oligoaniline-modified mono- and bis-nuclear iron complexes have been synthesized successfully, and their spectroscopic and electrochemical properties have been studied.

合成了一系列齐聚苯胺修饰的三联吡啶铁配合物，研究了齐聚苯胺链长、不同取代基等对配合物光谱性质和氧化还原性质的影响。

The static adsorption and desorption of pvc-pyridine containing nitrogen for β-naphthol were studied. The resin had a good adsorption and desorption.

以含氮聚氯乙烯－吡啶树脂作吸附剂，研究它对β-萘酚的静态吸附和脱附情况，以及温度对树脂吸附性能的影响。

A series of 3-naphthyl-2--1,3-thiazolidin-4-ones were synthesized by the three-component one-pot cyclocondensation of naphthylamine, aromatic aldehyde and 2-mercaptoacetic acid using a microwave-assisted method in the presence of DMAP/DCC.

利用微波促进的多组分一锅法，在封管条件下，以萘胺、芳醛和巯基乙酸为原料，4-二甲氨基吡啶/N，N'-二环已基碳二亚胺为催化剂，合成了系列新的噻唑烷酮衍生物，该反应具有时间短、操作简便等优点。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了