See figures 1 and 2 for structural isomers examples that fall under this category. Both molecules have the chemical formula C3H6O, but propanal (figure 1) is an aldehyde because it has a C=O group on a terminal carbon atom, while propanone (figure 2) is a ketone because its C=O group...
Development of the Colle-Salvetti correlation-energy formula into a functional of the electron density Phys. Rev. B, 37 (1988), pp. 785-789 Google Scholar [21] Hiroshi Yoshida, Kumi Takeda, Junko Okamura, AkitoEhara, Hiroatsu Matsuura A new approach to vibrational analysis of large molecules...