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All results from a given calculation for CH3Br (methyl bromide)

using model chemistry: QCISD(T)=FULL/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at QCISD(T)=FULL/Def2TZVPP
 hartrees
Energy at 0K-2612.627804
Energy at 298.15K 
HF Energy-2612.046613
Nuclear repulsion energy89.329644
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at QCISD(T)=FULL/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3090 3090        
2 A1 1349 1349        
3 A1 634 634        
4 E 3198 3198        
4 E 3198 3198        
5 E 1489 1489        
5 E 1489 1489        
6 E 978 978        
6 E 978 978        

Unscaled Zero Point Vibrational Energy (zpe) 8200.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8200.9 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at QCISD(T)=FULL/Def2TZVPP
ABC
5.25624 0.32058 0.32058

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.518
Br2 0.000 0.000 0.419
H3 0.000 1.030 -1.852
H4 0.892 -0.515 -1.852
H5 -0.892 -0.515 -1.852

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.93751.08251.08251.0825
Br21.93752.49342.49342.4934
H31.08252.49341.78391.7839
H41.08252.49341.78391.7839
H51.08252.49341.78391.7839

picture of methyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 107.932 Br2 C1 H4 107.932
Br2 C1 H5 107.932 H3 C1 H4 110.965
H3 C1 H5 110.965 H4 C1 H5 110.965
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability