caa a22 4500 465754864 CHVBK 20180323111844.0 cr unu---uuuuu 170327e19900301xx s 000 0 eng 10.1007/BF01166272 doi (NATIONALLICENCE)springer-10.1007/BF01166272 The golden jubilee of the Coulson-Rushbrooke pairing theorem [Elektronische Daten] [R. Mallion, D. Rouvray] The year 1990 marks the fiftieth anniversary of the much celebrated Pairing Theorem of Coulson and Rushbrooke. In its original form, the Theorem stated that for any altemant hydrocarbon: (1) the π-electron energy levels are symmetrically distributed about the zero energy level; (2) the LCAO-MO associated with the energy levelɛ i is the same as that belonging to the energy level -ɛ i except for a difference of sign (only) in every other atomic orbital coefficient; (3) the totalπ-electron charge density at any carbon atom in the molecule equals unity. Here, we trace the origins of this Theorem, describe its subsequent development, and outline some of its more significant uses. We conclude by discussing recent applications of the Theorem to positive and negative hydrocarbon ions, Möbius systems, and high-spin hydrocarbon species. J.C. Baltzer AG, Scientific Publishing Company, 1990 Mallion R. The King's School, CT1 2ES, Canterbury, Kent, UK aut Rouvray D. Department of Chemistry, University of Georgia, 30602, Athens, Georgia, USA aut Journal of Mathematical Chemistry Kluwer Academic Publishers 5/1(1990-03-01), 1-21 0259-9791 5:1<1 1990 5 10910 https://doi.org/10.1007/BF01166272 text/html Onlinezugriff via DOI 1 review-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01166272 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mallion R. The King's School, CT1 2ES, Canterbury, Kent, UK aut NATIONALLICENCE 700 1- Rouvray D. Department of Chemistry, University of Georgia, 30602, Athens, Georgia, USA aut NATIONALLICENCE 773 0- Journal of Mathematical Chemistry Kluwer Academic Publishers 5/1(1990-03-01), 1-21 0259-9791 5:1<1 1990 5 10910 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer