title: Electronic structure of porphyrins. All valence electron self-consistent field molecular orbital calculations of free base, magnesium, and aquomagnesium porphines.
mesh_terms: D001665:Binding Sites; D004563:Electrochemistry; D004583:Electrons; D006863:Hydrogen-Ion Concentration; D007477:Ions; D008274:Magnesium; D008433:Mathematics; D008956:Models, Chemical; D008970:Molecular Weight; D011166:Porphyrins / Q000032:analysis*; D011199:Potentiometry; D014961:X-Ray Diffraction
chemical_list: D007477:Ions; D011166:Porphyrins; D008274:Magnesium