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

using model chemistry: QCISD(T)=FULL/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-2609.849776
Energy at 298.15K 
HF Energy-2609.519607
Nuclear repulsion energy88.580305
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/6-31+G**
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 3139 3139        
2 A1 1386 1386        
3 A1 608 608        
4 E 3259 3259        
4 E 3259 3259        
5 E 1514 1514        
5 E 1514 1514        
6 E 994 994        
6 E 994 994        

Unscaled Zero Point Vibrational Energy (zpe) 8333.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8333.0 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/6-31+G**
ABC
5.22933 0.31467 0.31467

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.534
Br2 0.000 0.000 0.423
H3 0.000 1.033 -1.866
H4 0.894 -0.516 -1.866
H5 -0.894 -0.516 -1.866

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.95701.08461.08461.0846
Br21.95702.51122.51122.5112
H31.08462.51121.78851.7885
H41.08462.51121.78851.7885
H51.08462.51121.78851.7885

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 107.824 Br2 C1 H4 107.824
Br2 C1 H5 107.824 H3 C1 H4 111.067
H3 C1 H5 111.067 H4 C1 H5 111.067
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability