氮原子

氮原子在Ni平坦和缺陷表面上的吸附和振动

Adsorption and Vibration of Nitrogen Atom on Flat and Defect Nickel Surface

本文描述了利用~（14）N（d，a1）~（12）C核反应测量固体样品表面层内氮原子含量及深度分布的方法。

The nitrogen depth profile and concentration are measured by means of 14N ( d , a1 ) 12C reaction .

近年来，随着C（60）的发现，激起了越来越多的人们继续研究新型原子簇的热情，尤其是氮原子簇。

Recent years , the discovery of C60 has stimulated more and more people to research new polyatom clusters , especially polynitrogen cluster .

氮原子、分子与团簇离子注入Si（111）的特性研究

Studies on the feature of si ( 111 ) surface implanted by nitrogen atom , molecule and cluster ions

而当R为吸电子基团-CHO、-COCH3时，主要发生分子内氮原子上的亲核取代反应，产物为含氮的五员杂环化合物。

In contrast , electro-withdrawing groups CHO and COCH_ 3 on the attacking site will favor the intramolecular nucleophilic substitution of nitrogen and form 5-membered heterocyclic compounds .

用俄歇能谱研究热氮化SiO2膜中氮原子的扩散

A study on the nitrogen diffusion in the thermal nitridation sio_2 film with auger es

计算结果表明，氮原子在Pt（100）面上只存在四重吸附态。

Our theoretical results show that N atom can only adsorb in the four-fold hollow site on Pt ( 100 ) .

配体H2L及H2L（Br）均为四齿配体，它们通过亚胺氮原子和酚氧原子跟金属离子配位；

The ligands are quadridentate and they coordinate with the metal ions through imine nitrogens and phenolate oxygens .

表面成分检测渗镀层呈梯度材料分布，表面钛原子和氮原子之比，符合TiN相结构。

The infiltration layer was distributed with functionally gradient material by surface components detection . The surface rate of Ti atom and N atom conformed to TiN phase structure .

XPS数据说明，－PPhZ基团中的磷原于与过渡金属钮之间形成配位键，满足一定空间结构的氧和氮原子也参与配位键的形成。

XPS data revealed that the coordination bonds were formed among phosphorous , some oxygen and nitrogen which meet steric structure and palladium atoms in the palladium complexes .

X射线单晶衍射分析表明其中的汞原子通过与两个碘原子以及吡啶乙烷的两个氮原子配位形成扭曲的四面体构型。

X ray single crystal diffraction analyses showed that 1 exhibits distorted tetrahedron , and in this structure the metal mercury atom is complexed by two nitrogen atoms from two bpea ligands and two iodide atoms .

紫外-可见吸收光谱、红外吸收光谱、X射线光电子能谱分别证明锌离子能够与DNA上的碱基氮原子及磷酸基团相结合，生成DNA模板上的纳米颗粒，从而形成纳米链状结构。

UV-Vis absorption spectrum , infrared absorption spectroscopy and X-ray photoelectron spectroscopy proved zinc ions bound to DNA in the positions of nitrogen atoms of base pairs and phosphate , then nanoparticles formed along DNA template as a chain .

Hfo，随着氮原子数的增加而增加。

H fo increase when the number of N atoms increases .

化合物1和2的质谱有相似的裂解方式：有机正离子发生失掉氮原子上的一个取代基而保留咪唑啉环产生D，E，F离子的裂解方式。

Compounds 1 and 2 have similar fragmentation pattern . The organic cations could lose one of the substituents linked to nitrogen atoms and reserve the ring to give out D , E , F fragment ions .

发现2-（2-吡啶基）咪唑化合物存在分子内光诱导电子转移反应（PET），并且这一过程强烈地依赖于溶液的pH值，但是氮原子的质子化会影响PET过程。

It was found that the intramolecular photoinduced electron transfer ( PET ) took place in the solution and the process strongly depended on the acidity of the solution and was affected by the protonation of nitrogen atoms .

FTIR光谱表明，充当施主杂质中心的氮原子在薄膜退火过程中存在被激活的现象，从而提高了电导率。

FTIR spectra analysis results show that the nitrogen atom as an impurity center has an " activation " process during the thermal treatment , which leads to the increase of the electrical conductivity .

对CNx纳米管样品的拉曼光谱研究结果显示，拉曼光谱中D带和G带的相对强度、拉曼峰半高宽等信息可以反映由于氮原子掺杂所引起的纳米管结晶有序程度的变化。

Raman spectroscopic studies show that the intensities of the D with respect to G band and the widths ( FWHMs ) of Raman bands can represent the change of the CNx nanotube 's crystallinity with the nitrogen incorporation .

借助统计热力学方法和正规溶液模型法估计了在αFe-N体系中氮原子与其周围最近邻氮原子之间的相互作用。

The interaction energy of N-N pairs in α Fe-N system was evaluated through statistical thermodynamics and regular solution model .

同时，与Ni（100）表面对比，系统研究了氮原子在Ni（510）台阶面的吸附和扩散。

Meanwhile , compared with the Ni ( 100 ) surface , the adsorption and diffusion of nitrogen on Ni ( 510 ) step surface were systematically investigated on the basis of the model obtained for Ni ( 100 ) flat surface .

复合后部分聚苯胺红外吸收峰发生移动，这是由于聚苯胺内氮原子孤对电子和苯醌结构中的π电子向Sn原子空轨道转移造成的。

It was confirmed that transfer of lone pair electron on N atom and л electron on benzene ring and quinone ring to Sn 's 5d empty orbit lead to the shift of absorption peak of PANI ;

在N2压力为8Pa、溅射功率为200W时，薄膜的氮原子数分数得到最大值41%；

N atom concentration in the thin films arrived at maximum 0.41 when nitrogen pressure is 8 Pa and sputtering power is 200 W.

对于较高N2分压（>0.4Pa）下制备的样品，其薄膜层中空位型缺陷的增加主要是由沉积原子（离子）与氮原子碰撞几率增大，使其缺乏足够的动能去填补空位引起的；

For the samples was prepared by high N 2 partial pressure , the increase of vacancy defects is caused from the large collision faction of the deposition atom ( ion ) with nitrogen atom .

DPA作为一种常用的识别集团，其三个氮原子都含有未成键的n电子，可以部分或同时参与同阳离子的络合，也得到越来越多的关注。

DPA is a common recognition of the Group . Its three nitrogen atoms containing nonbonding electron may be partially or simultaneously involved with the complex . Based on this , it is also got a wide range of attention .

结果表明：分子环内1位碳原子C1和4位氮原子N4的二级亲核前线电子密度f1n（N）、f4n（N）越大，其利尿活性也越大，具有较好的相关性。

The results show that the more the second nucleophilic frontier electron density of carbon I and nitrogen 4 in molecular rings , the more the active index of diuresis of studied triazine derivatives , and good linear relation obtained .

在配合物1和2中，配体L1和L2利用吡啶环上的两个氮原子分别连接（PPh3）2Cu2（μ-I）2和（PPh3）2Cu单元形成一维无限配位聚合物链。

In complexes 1 and 2 , Ligand L1 and L2 links ( PPh_3 ) _2Cu_2 (μ - I ) _2 and ( PPh_3 ) _2Cu units to form an infinite coordination polymer chain , respectively .

研究了氮原子在Nd（Fe，M）12合金中的扩散行为，测定了扩散温度、时间与样品平均氮含量的关系；

The diffusion behaviour of N atoms in Nd ( Fe , Mo ) 12 alloys has been studied . The relationship between the diffusion temperature , the diffusion time with average concentration of N in samples and the distribution of N concentration in powder particle have been measured .

CDDP可与DNA碱基的氮原子形成稳定的Pt-DNA加合物，其中链内交联是Pt-DNA加合物的主要形式。

Another possible mechanism involves CDDP binding to nitrogen atoms of DNA base and forming a stable Pt-DNA adducts , which is subsequently forming an interstrand cross-link with double-strand DNA .

2-C上氨基的存在表现出壳聚糖的碱性及氮原子、氧原子的配位性；

It also has the basicity , and the properties of coordination , showing cation , due to the amino in 2 C.

再在合成气（2H2/CO）中进行碳化处理，ε-氮化铁中的氮原子可逐渐被碳原子取代而转化为氮碳化铁和碳化铁，但铁的担载量越高，这种取代越困难。

The subsequent carburization in syngas ( 2H2 / CO ) resulted in the substitution of nitrogen by carbon atoms forming Fe2 ( NC ) and iron carbide . However , the substitution became more difficult as the iron loading increased .

配合物[EuL（NO3）3]的晶体结构分析表明，配体中的三个氧原子和一个氮原子以类环状结构与中心Eu3+离子螯合配位。

Crystal structure analysis of the [ EuL ( NO3 ) 3 ] complex reveals that the Eu3 + ion is wrapped by three oxygen atoms and one nitrogen atom of the ligand like a semicircle-shaped coordination structure .