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键断裂能在化学动力学上是一个重要数据。通常可用生成热计算键断裂能。有时,为了校验实验数据的可靠性,有利用经验式作近似计算的。碳键以及若干金属化物的键断裂能可从热化学手册中查阅,其中很多数据比较准确,已得各种实验证实。然而,在手册中硼键断裂能的数据极少,但文献记载的实验数据有时偏离较大。此种情况是由于硼及氧化硼的生成热是近年来测准的,以及有机硼化物的纯度不高使测定数据受到限制。据最近的文献所示,硼键断裂能(D_(B-B))的数据经硼氢生成热证实为79.3千卡/克分子,比较可靠。在上述情况下,我们有可能利用Pauling经验式进行各种硼键断裂能的近似试算。经试算结果与实验值对照,除卤硼键外,其他各硼键数据基本上
Bond failure can be an important data in chemical kinetics. It is often useful to generate heat to calculate the bond energy. Sometimes, in order to verify the reliability of experimental data, there is an empirical formula for approximate calculation. Bonds between the carbon and some metallizations can be accessed from the Thermochemistry Handbook, many of which are accurate and have been confirmed by various experiments. However, there is very little data on the bond energies of the boron bond in the manual, but experimental data documented in the literature sometimes deviate from each other. This is because the heat of formation of boron and boron oxide is measured in recent years, and the purity of the organoboron is not high, so the measurement data is limited. According to recent literature, the data of the bond energy (B_ (B_)) of boron bond has been confirmed to be 79.3 kcal / mol by the hydrothermal reaction of borohydride, which is more reliable. In the above cases, we may use Pauling empirical formula for a variety of boron bond fracture energy approximation trial. The test results and the experimental value of control, in addition to halogen bond, the other basic data of each bond