Using valence bond theory to understand electronic excited states: Application to the hidden excited state (2(1)A(g)) of C2nH2n+2 (n=2-14) polyenes

Department of Chemistry and State Key Laboratory for Physical Chemistry of the Solid Surface,Xiamen UniVersity, Xiamen, Fujian 361005, P. R. of China, and Department of Organic Chemistry andthe Lise Meitner-MinerVa Center for Computational Quantum Chemistry, The Hebrew UniVersity,Jerusalem 91904, IsraelReceiVed: March 3, 2000; In Final Form: June 23, 2000