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

using model chemistry: wB97X-D/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-2614.090851
Energy at 298.15K 
HF Energy-2614.090851
Nuclear repulsion energy89.360093
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/6-311+G(3df,2p)
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 3091 3091 16.90 130.54 0.00 0.00
2 A1 1350 1350 15.06 1.49 0.15 0.26
3 A1 639 639 10.87 22.41 0.17 0.30
4 E 3201 3201 1.34 49.69 0.75 0.86
4 E 3201 3201 1.34 49.71 0.75 0.86
5 E 1484 1484 6.71 3.65 0.75 0.86
5 E 1484 1484 6.72 3.65 0.75 0.86
6 E 976 976 4.17 0.48 0.75 0.86
6 E 976 976 4.17 0.49 0.75 0.86

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 wB97X-D/6-311+G(3df,2p)
ABC
5.24796 0.32093 0.32093

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.517
Br2 0.000 0.000 0.419
H3 0.000 1.031 -1.853
H4 0.893 -0.515 -1.853
H5 -0.893 -0.515 -1.853

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.93561.08421.08421.0842
Br21.93562.49462.49462.4946
H31.08422.49461.78531.7853
H41.08422.49461.78531.7853
H51.08422.49461.78531.7853

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
Charges from optimized geometry at wB97X-D/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.429      
2 Br -0.113      
3 H 0.181      
4 H 0.181      
5 H 0.181      


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 -1.910 1.910
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.841 0.000 0.000
y 0.000 -25.841 0.000
z 0.000 0.000 -22.099
Traceless
 xyz
x -1.871 0.000 0.000
y 0.000 -1.871 0.000
z 0.000 0.000 3.742
Polar
3z2-r27.485
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 4.626 0.000 0.000
y 0.000 4.625 -0.000
z 0.000 -0.000 6.531


<r2> (average value of r2) Å2
<r2> 48.791
(<r2>)1/2 6.985