Molecular Orbital Constants for 1-Butene (C4H8) MO B (eV) U (eV) N Q DblIon Special Remarks 1a 305.71 436.11 2 1 Yes none none 2a 305.57 436.18 2 1 Yes none none 3a 305.35 436.16 2 1 Yes none none 4a 305.28 436.16 2 1 Yes none none 5a 29.36 37.44 2 1 Yes none none 6a 26.89 38.18 2 1 Yes none none 7a 23.29 35.89 2 1 No none none 8a 18.58 31.86 2 1 No none B from OVGF 9a 15.97 26.32 2 1 No none B from OVGF 10a 15.08 29.01 2 1 No none B from OVGF 11a 14.76 27.37 2 1 No none B from OVGF 12a 13.52 30.33 2 1 No none B from OVGF 13a 13.04 31.07 2 1 No none B from OVGF 14a 12.38 29.95 2 1 No none B from OVGF 15a 11.92 32.02 2 1 No none B from OVGF 16a 9.86 27.84 2 1 No none B from est. CCSD(T)