金属羰基化合物

The formation situation of the band for transition metallic carbonyl cluster compounds is analysed with the bond valence formula for atomic cluster compounds.

本文运用原子簇化合物键价计算公式，对过渡金属羰基簇合物成键情况进行了分析，利用金属键轨道数，价非键轨道数和金属配体成键轨道数计算簇合物价轨道总数。

Various inorganic acid, such as ammonium chloride, copper sulfate, aluminum sulfate, mercury chloride, cerium sulfate and cerium chloride, have been evaluated for copper powder, zinc powder, or tin powder-mediated allylation reactions of carbonyl compounds with allyl bromide in aqueous medium.

结果表明：在同样的反应条件下，与铜粉或锌粉作用的此类反应相比，锡粉能更好的作用羰基烯丙基化反应，并且该反应的产率都比较高；在同样的金属促进剂存在下，硫酸亚铈的促进性能是所有无机酸中最好的。 2、研究了二氧化碳促进羰基化合物烯丙基化反应。

Among the existing means to construct these synthetically and biologically important molecules, metal-mediated allylation and propargylation is one of the easiest and most convenient.

在现存的用来构建这些重要的合成子和生物分子的方法中，金属促进的羰基化合物烯丙基化和炔丙基化是最容易和最方便的。

In the paper, a series of metallorganic compounds have been studied by the quantum-chemical calculation with proper basis sets, including:1. a series of carbonyl complexes.2. dibenzene chromium and its derivatives3. ferrocene and its derivatives4. a series of metallic complexes with acetylacetoneWe optimized the geometric configurations of a series carbonyl complexes including Ni4 Fe5, Cr6 with density functional theory B3LYP method at the different levels and confirmed the stable geometry by vibrational analyses. Then we calculated the nuclear magnetic resonance spectra with GIAO method provided by GAUSSION98 program at the different levels.

本文用量子化学计算程序，用密度泛函B3LYP方法，在恰当基组水平上，用GAUSSIAN98程序提供的GIAO方法研究了系列金属有机化合物的核磁共振谱：一、羰基配合物系列：二、二苯铬及其衍生物系列：三、二茂铁及其衍生物系列：四、乙酰丙酮的配合物系列：我们用密度泛函B3LYP方法，在不同基组水平上对第一过渡系羰基化合物的系列配合物进行了结构优化，通过振动分析确定其稳定构型，然后再用密度泛函B3LYP方法在不同基组水平上，用GAUSSIAN98程序提供的GIAO方法计算其核磁共振谱。

This section includes the nonindustrial preparation, purication, and reactions of inoganic substances:elements; inorganic acids, bases, and salts; synthetic minerals; inclusion compounds;charge-transfer complexes; coordination compounds containing inoganic and organic ligands;nonmetal and metalloid compounds; and carbon-containing compounds such as the carbon oxides, metal carbonyls, carbonates and transition metal carbonxylates.

这一章节涵盖了无机物的非工业制备、提纯、及反应：元素；无机酸、基团和盐类；合成矿物质；包藏复合物；转移电荷复合物；包含了无机和有机配合基的配位化合物；非金属与非金属化合物；以及含碳化合物，如碳氧化物、金属羰基、碳酸盐和含有羰基的过渡金属等。

The conventional pinacol coupling of carbonyl compounds was carried out by using metals or metal compounds as mediators under condition of anhydrous organic solvents.

传统的呐偶合反应必须在无水有机溶剂条件下，由金属或金属化合物促进羰基化合物进行呐偶合反应。

Heteronuclear duster ; transition metal carbonyl compound ; coordination complex

异核原子簇；过渡金属羰基化合物；配合物

The results show that it is important to choose a proper basis set to calculate the NMR spectra for the complexes of the first series of transition elements.

计算结果表明：对第一过渡系金属Ni、Fe、Cr形成的羰基化合物，在优化结构和计算核磁共振谱时，选择基组非常重要。

Advances in Research on Plants Reactions under Phosphate Starvation;2. Topics discussed in this article includes synthesis and structures of R2M24, the reactions of its metal-metal triple bond with various reagents such as nucleophiles, carbon-carbon mu.

本文对一类重要的ⅥB族金属叁键化合物R_2M_2_4(R为环戊二烯基及类环戊二烯基)近年来的研究成果进行了综述，综述重点是这类化合物的官能团M≡M参键的化学活性，全文包括R_2M_2_4的合成及结构，M≡M叁键与亲核试剂、与碳-碳重键，与氧或与金属羰基物等试剂的反应及其应用。

Topics discussed in this article includes synthesis and structures of R2M24, the reactions of its metal-metal triple bond with various reagents such as nucleophiles, carbon-carbon mu.

本文对一类重要的ⅥB族金属叁键化合物R_2M_2_4(R为环戊二烯基及类环戊二烯基)近年来的研究成果进行了综述，综述重点是这类化合物的官能团M≡M参键的化学活性，全文包括R_2M_2_4的合成及结构，M≡M叁键与亲核试剂、与碳-碳重键，与氧或与金属羰基物等试剂的反应及其应用。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。