Molecular Orbital Constants for Silicon tetrafluoride (SiF4) MO B (eV) U (eV) N Q DblIon Special Remarks 1a1 1876.92 2510.04 2 1 Yes none none 2a1 717.04 1013.45 2 1 Yes none none 1t2 717.04 1013.44 6 1 Yes none none 3a1 171.63 359.77 2 1 Yes none none 2t2 120.2 332.06 6 1 Yes none none 4a1 45.75 99.63 2 1 Yes none none 3t2 44.77 106.18 6 1 Yes none none 5a1 21.93 82.47 2 1 No none B from OVGF 4t2 19.73 81 6 1 No none B from OVGF 1e 18.15 80.59 4 1 No none B from OVGF 5t2 17.29 84.73 6 1 No none B from CCSD(T) 1t1 16.31 88.76 6 1 No none B from CCSD(T)