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键长是研究物质结构与性能的重要数据,虽然可应用衍射法,光谱法和共振法来观测;但一般化学工作者往往缺少这种设备和操作技术,手册上的数据也很不足。如果能运用一些简单的基本原理和计算方法,借助某些已有的参考数据,推测出有关分子的键长,在实际和理论工作上都具有很大的价值。化学工作者在这方面已积累了不少的研究资料,例如盖累斯皮(R.J.Gillespic)的化合价层电子对相斥理论(VsEPR)等。本文介绍近期鲁宾逊(E.A.Robinson)和盖累斯皮发表的关于计算多重键键长的方法。
Bond length is an important data to study the structure and properties of materials. Although diffraction, spectroscopy and resonance methods can be used for observation, the general lack of such equipment and operating techniques is often lacking in manuals. If we can use some simple basic principles and calculation methods, with some of the existing reference data, it is estimated that the bond length of the molecule has great practical and theoretical work. Chemists have accumulated a great deal of research data in this area, such as valence electron pair repulsion theory (VsEPR) by R. J. Gillespic et al. This article describes recent methods for calculating multiple bond lengths published by E.A. Robinson and Gere Spiegel.