迄今基于 HMO 模型的分子拓扑图形理论并没有得到能谱的封闭公式.但 HMO夯子轨道图形理论显示了本征多项式与分子网络的直接联系,值得进一步探讨.本文试应用微扰理论处理这一问题,直接由分子拓扑图形得到了并苯类分子的 PHMO 能谱封闭公式,把 PHMO 问题图形化.虽然,作为简单分子轨道理论的近似方法,PHMO 法如同 EHMO 法一样,并不比经典的 HMO 法更定量一些,但对“定性的”分子轨道理论,由 So far, HMM model-based molecular topology graph theory has not got the closed formula of energy spectrum, but HMO ramor orbit graph theory shows that the intrinsic polynomial is directly related to the molecular network, which deserves further discussion.In this paper, we use the perturbation theory to deal with this Problem, the PHMO energy spectrum closed formula of acene-like molecules is obtained directly from the molecular topological graph, and the PHMO problem is graphically illustrated. Although, as an approximate method of simple molecular orbital theory, the PHMO method is no different from the classical HMO method More quantitative, but for “qualitative” molecular orbital theory, by