title: A theoretical and comparative CNDO study of chlorophylls a and b and their beryllium homologs.
mesh_terms: D001608:Beryllium; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002734:Chlorophyll / Q000031:analogs & derivatives*; D011789:Quantum Theory
chemical_list: D002734:Chlorophyll; D001608:Beryllium