中心原子

采用直接法制备了主族金属元素铅取代的以锰为中心原子的杂多配合物，经ICP，TG曲线确定其化学式为K14[Pb（MnW11O39）2]。

Adopt direct method to produce the main group metal element-lead to take the place of heteropoly com-pounds with Mn as the central atom . By means of ICP and TG , the molecular formulas were confirmed as K14 [ Pb ( MnW11O39 ) 2 ] .

对酞菁类这一特殊类型的发色体，配位氮原子平均电荷和中心原子电负性对OWF（π-π）有较大的影响，OWF（π-π）随它们的增大而线性增大。

The charges on coordinated bonded nitrogens and the electronegativity of central atom affected OWF π - π greatly for phthalocyanine compounds , OWF π - π increased linearly with the increase of the charges and the electronegativity .

在这两个配合物中，配体L1与中心原子Cu（I）都采用线型配位模式。

In both complexes the copper ( I ) atoms showed linear coordination mode .

IR、MS、GPC测定结果表明该涂料是含有以钛为中心原子的漆酚钛螯合高聚物。

The determinations of IR . MS and GPC showed that the new type coating is urushiol-titanium chelate polymer with Ti-atom centre in molecular structure .

用中心原子模型计算Fe-C合金马氏体相变驱动力和相变点

Calculation of the driving force and MS for martensitic transformation in Fe-C alloys from the central atoms model

Cu、Pb、Fe下降幅度分别达到381%、708%、403%，对生物无害的Zn增加近2倍，这是因Zn是许多酶和蛋白质分子的活性中心原子，羟基分解细胞后，溢出溶入水中所致。

Zn which is no any harm to organism raised 2 times because Zn , as an activated center element of many enzymes and protein , was extracted out and dissolved into water after the cells were decomposed by hydroxyl .

这个键是非极性的，但是，我们断言过早，因为C是中心原子，由于sp3杂化，这个分子本身是非极性的且对称的。

This bond is polar , but again , as I alluded to earlier , because the carbon is centered in the tetrahedron , because of the sp3 hybridization , the molecule itself is symmetric and nonpolar .

结果还表明：加入合金化元素Zn有利于Ti原子与模型原子团的结合，并增强中心原子与其模型原子团之间的杂化健倾向，这可能导致合金晶格常数的收缩。

The addition of Zn is of benefit to the combination of Ti with the model cluster . The result of the hybrid bonding tendency between the alloying ele-ment Zn and the model cluster shows that the lattice constant for the Ll_2 phase may be constricted .

该配合物中L组氨酸配体分别通过氨基氮、咪唑氮、羧基氧与中心原子钌配位。

, with one crystallized water molecule . The histidine ligand coordinated to Ru ? in a facial tridentate mode through amino nitrogen , imidazole nitrogen and carboxylate oxygen , respectively .

合成带有不同中心原子和在周环上带有不同类型、不同数目（四个或八个）的烷氧基的酞菁化合物，从中找出适于作CD-R光盘记录层材料（俗称染料）的物种。

Phthalocyanines substituted with alkoxy of different types and with different number ( 4 or 8 ) were synthesized . The complex suitable for the recording layer of CD-R ( CD-R dye ) was selected and appraised .

基于团簇理论并计及邻近和次邻近原子对中心原子的屏蔽作用，我们用完全量子力学方法计算了hcp结构固态氦的原子多体作用排斥势和等温压缩线。

Based on the theory of atomic cluster and taking account of the screening effects induced by nearest neighbour and next nearest neighbour atoms , we have calculated the many body repulsive potential and isothermal compression curve for solid helium with hcp lattice configuration .

假设温度升高，使杂质原子和位错中心原子的键合作用减弱，利用Morse势函可以解释Inσ-T的线性关系，并且所估计的斜率在数量级上和实验符合。

Assuming that a chemical exchange bond between the impurity and dangling atoms would be weakened with rise in temperature and using the Morse function , the experimental linear In α - T relationship could then be accounted for and a slope of the right order of magnitude established .

过渡金属为中心原子的锆杂多化合物的合成和性质研究

Zirconium Substituted Heteropoly Complexes with Transition Metal as Central Atom

由分子的不饱和度判断中心原子的杂化类型

Method of Judging the Hybridization Form of Central Atomic Orbital by Unsaturation

我们讨论的甲烷，只有一个中心原子。

We were talking about methane , which has only one central atom .

我们也可以讨论，有两个或者更多中心原子的分子。

We can also talk about atoms that have two or more central atoms .

一个计算分子中心原子价层电子对数的新公式

A New Formula for Calculating the Valence Shell Electron Pairs of Centre Atom in Molecular

含氮或碳中心原子的窝穴体开链类似物的合成与研究

Syntheses and Studies of Open Chain Analogues of Cryptands with Nitrogen or Carbon as Central Atom

在中心原子周围形成一个联合体的原子、分子、原子团或离子。

An atom or molecule or radical or ion that forms a complex around a central atom .

按与其他原子结合或配合的中心原子描述的化合物。

A compound described in terms of the central atom to which other atoms are bound or coordinated .

在络合物中，这些原子都和中心原子成键，而彼此不成键。

In the complex these atoms are each bound to one central atom and not to each other .

组成这种大团簇结构的基本原子团的中心原子是彼此以单线或扭结的形式相互成键连接的。

The center atoms of these basic clusters are bond - connected each other with the linear or twisting mode .

单配体锌的配合物晶体结构表明该结构为单配体结构，锌中心原子为四配位的。

The crystal structure of the mono zinc complex revealed that the structure exhibit a monomeric structure with a four-coordinated metal center .

提出了用数轴判断中心原子轨道杂化方式的方法、应用及规律。

This paper gives a method of judging the hybridization form of central atomic orbital by number axis , its applications and laws .

后将中心原子与其相邻原子之间，连上单键，然后减掉2个价电子。

OK , then it says draw a single bond from each surrounding atom to the central atom , and subtract two valence electrons .

阐述了酞菁环的电子结构是其具有气敏性的基础，讨论了配合物中的中心原子和取代基团对配合物气敏性的影响。

The fundamental function of the electron structure of the ring skeleton and the influence of central atoms and substituents on gas-sensitivity is illustrated .

近来的研究表明杂多化合物的性能可通过改变中心原子和配位原子的种类和个数来调变。

Catalytic property of the heteropoly compounds can be adjusted and controlled by changing the central atoms and coordination atoms as bing reported in recent years .

前言：同种中心原子的低氧化态无机含氧酸的氧化性比高氧化态的无机含氧酸的氧化性强，这是无机化学中普遍存在的一个问题。

In inorganic chemistry , there exists a common question : When the oxidation state of the same atom is increasing , its oxidizing is decreasing .

本文讨论了分子的中心原子和取代基的性质对气相分子酸碱性的影响。

This paper discusses the effect of properties of the centre atoms and substituents of molecules on gas & phase acidities and basicities of the molecules .

本文运用角度重叠模型的角度重叠因子，经过简单运算，就可方便地推求出常见构型化合物中心原子等性杂化轨道的数学表达式。

In this paper , hybrid orbital expression of centre atim of common configuration compounds have been derived by using angular overlap factor in angular overlap model .