仅使用行列式代数 ,直接对共轭链多烯的H櫣ｃｋｅｌ行列式推出一个一般降阶公式 ,从而引出两个半折降阶公式 ,并导出共轭环多烯与共轭链多烯的H櫣ｃｋｅｌ行列式关系 ,最后给出应用实例。显然 ,这种简捷的初等解法更易于为初学者所掌握 Using only determinant algebra, we directly introduce a general order reduction formula for the H 櫣 ckel determinant of conjugated polyene, leading to two half fold reduction formulas and deriving the conjugate cyclic polyene and conjugated polyene H櫣 ckel determinant relationship, and finally gives examples of applications. Obviously, this simple and elementary solution is easier for beginners to master