Molecular orbitals of hydrogen cluster H_4 and homoatomic cluster P_4 of representative element phosphorous are qualitatively constructled by using fragment molecular orbital approach.

• 本文用定性分子轨道理论和碎片分子轨道法构造了氢原子簇H_4和代表性元素磷的四原子簇合物P_4的分子轨道。