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

using model chemistry: wB97X-D/cc-pVTZ-PP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at wB97X-D/cc-pVTZ-PP
 hartrees
Energy at 0K-456.837924
Energy at 298.15K 
HF Energy-456.837924
Nuclear repulsion energy66.532105
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 wB97X-D/cc-pVTZ-PP
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 3098 3098 17.01 135.70 0.00 0.00
2 A1 1346 1346 18.74 0.08 0.08 0.15
3 A1 635 635 10.57 20.59 0.23 0.37
4 E 3208 3208 1.95 54.67 0.75 0.86
4 E 3208 3208 1.95 54.76 0.75 0.86
5 E 1483 1483 6.09 6.23 0.75 0.86
5 E 1483 1483 6.11 6.24 0.75 0.86
6 E 972 972 4.98 2.05 0.75 0.86
6 E 972 972 4.99 2.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8202.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8202.2 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 wB97X-D/cc-pVTZ-PP
ABC
5.24633 0.32022 0.32022

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVTZ-PP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.519
Br2 0.000 0.000 0.419
H3 0.000 1.031 -1.854
H4 0.893 -0.515 -1.854
H5 -0.893 -0.515 -1.854

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.93831.08381.08381.0838
Br21.93832.49572.49572.4957
H31.08382.49571.78561.7856
H41.08382.49571.78561.7856
H51.08382.49571.78561.7856

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 107.981 Br2 C1 H4 107.981
Br2 C1 H5 107.981 H3 C1 H4 110.919
H3 C1 H5 110.919 H4 C1 H5 110.919
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVTZ-PP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.211      
2 Br -0.114      
3 H 0.108      
4 H 0.108      
5 H 0.108      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.845 1.845
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.431 0.000 0.000
y 0.000 -25.431 0.000
z 0.000 0.000 -21.759
Traceless
 xyz
x -1.836 0.000 0.000
y 0.000 -1.836 0.000
z 0.000 0.000 3.672
Polar
3z2-r27.344
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.853 0.000 0.000
y 0.000 3.853 -0.000
z 0.000 -0.000 6.087


<r2> (average value of r2) Å2
<r2> 46.854
(<r2>)1/2 6.845