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

using model chemistry: QCISD(T)=FULL/daug-cc-pVTZ

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/daug-cc-pVTZ
 hartrees
Energy at 0K-2612.627628
Energy at 298.15K 
HF Energy-2612.093051
Nuclear repulsion energy89.681137
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/daug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3116 3116        
2 A1 1341 1341        
3 A1 642 642        
4 E 3190 3190        
4 E 3190 3190        
5 E 1500 1500        
5 E 1499 1499        
6 E 978 978        
6 E 978 978        

Unscaled Zero Point Vibrational Energy (zpe) 8216.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8216.4 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/daug-cc-pVTZ
ABC
5.26536 0.32342 0.32342

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.511
Br2 0.000 0.000 0.417
H3 0.000 1.029 -1.846
H4 0.891 -0.515 -1.846
H5 -0.891 -0.515 -1.846

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.92781.08241.08241.0824
Br21.92782.48642.48642.4864
H31.08242.48641.78231.7823
H41.08242.48641.78231.7823
H51.08242.48641.78231.7823

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 108.062 Br2 C1 H4 108.062
Br2 C1 H5 108.062 H3 C1 H4 110.843
H3 C1 H5 110.843 H4 C1 H5 110.843
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability