central atom

Hybrid orbitals and its wave function of central atom in ml_8 complex

ML8型配合物中央体的σ杂化轨道及其波函数

The paper discuss the quantitative relationship between the thermal stability of carbonate and the function of ion polarization, and apply the stable potential of central atom to forecast the separation tempera-tare.

探讨了碳酸盐热稳定性与离子极化作用之间的定量关系，并应用中心原子稳定势预测其分解温度。

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.

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。

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

含氮或碳中心原子的窝穴体开链类似物的合成与研究

A series of tetracarboxylic metal phthalocyanines are synthesized and their electronic absorption spectra are investigated. There are several factors influence the maximum absorption wavelength λ max of Q band: the electronic structure of central metal atom; peripheral substituents;

合成了系列四羧基金属酞菁配合物，研究了中心金属的电子层结构、取代基效应以及溶剂的极性对于配合物电子吸收光谱最大吸收峰波长λmax的影响。

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].

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]。

The crystal structure was determined by X-ray single crystal diffraction, the structure is a distorted triangular bipyramid with five-coordinated central tin atom.

对X射线单晶衍射测定了该配合物的晶体结构。结果表明，配合物中锡原子呈五配位畸变三角双锥构型。

Firstly, the effective charge of characteristic atom was evaluated through the approach on the base of density function theory ( DVM-X_ α) according to the central atom cluster model.

其过程为：首先采用中心原子团簇模型，用密度泛函理论的离散变分方法确定特征原子的有效电荷；

The central atom of vitamin B_ ( 12) was proved to be cobalt ( III). Recently, much attention has been devoted to this field about it.

维生素B（12）的中心配位原子已经被人们证明是三价钴，围绕着B（12）及其辅酶的研究近年来一直是化学合成、生物研究工作者们热衷的一个领域。

The three VO3+ complexes are similar in structure. The central metal atom possesses a distorted square pyramid or an octahedron.

三个VO~（3+）配合物具有相似的结构，中心V原子呈畸变四角锥或八面体配位构型。

Zirconium Substituted Heteropoly Complexes with Transition Metal as Central Atom

过渡金属为中心原子的锆杂多化合物的合成和性质研究

Can generate is relatively stable carbon-left groups and the response of vulnerable SN1, central carbon atom space hampered the response of small-prone SN2.

能生成相对稳定的正碳离子和离去基团的反应物容易发生SN1，中心碳原子空间阻碍小的反应物容易发生SN2。

So in terms of the first step of skeletal structure, this is actually going to be easier because we don't have a central atom, we just have carbon and nitrogen here.

对于第一步画出骨架，其实比刚才更容易，因为我们没有一个中心原子，我们这里只有碳和氮两个原子。

In this paper, Highest Obital Figure Rules is introduced, which can not only accurately infer the structures of molecular type free radicals, molecular type ions and complex ions, but also analyse the hybridization type of the equality and inequality of the central atom.

提出最高轨道数法，不仅能准确地推测分子型分子的构型，也能推测出自由基、分子型离子、以及配离子的构型，还能分析得出中心原子等性或不等性杂化类型。

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

在络合物中，这些原子都和中心原子成键，而彼此不成键。

The central Cu~ ⅱ atom is penta-coordinated by four nitrogen donors of the pyridine rings of two DPQ and an oxygen atom of the perchlorate, and the coordination geometry of Cu~ ⅱ could be considered as an ideal square-pyramidal environment.

中心Cu离子分别与两个DPQ配体上的4个吡啶氮原子以及高氯酸根上的一个氧原子配位，其配位几何构型为理想四方锥。

So it's trigonal because we have these three atoms that are bound to the central atom here, and if you picture it, it's actually shaped like a pyramid.

这里三角形是因为，我们有3个原子核中心原子成键，如果你画它，它就是金字塔形的。

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

我们讨论的甲烷，只有一个中心原子。

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

按与其他原子结合或配合的中心原子描述的化合物。

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

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。

The positively charged central region of an atom, composed of protons and neutrons and containing almost all of the mass of the atom.

原子核原子的正极中心部分，由质子和中子构成，几乎集中了原子的全部质量。

An atom or molecule or radical or ion that forms a complex around a 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。