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

using model chemistry: M06-2X/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at M06-2X/6-31G
 hartrees
Energy at 0K-2611.521600
Energy at 298.15K 
HF Energy-2611.521600
Nuclear repulsion energy87.608715
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 M06-2X/6-31G
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 3152 3152 9.76 123.34 0.01 0.01
2 A1 1392 1392 14.69 1.11 0.67 0.80
3 A1 590 590 17.08 22.95 0.34 0.51
4 E 3274 3274 2.00 63.53 0.75 0.86
4 E 3274 3274 2.01 63.52 0.75 0.86
5 E 1526 1526 12.31 21.03 0.75 0.86
5 E 1526 1526 12.31 20.98 0.75 0.86
6 E 996 996 8.99 12.67 0.75 0.86
6 E 996 996 8.97 12.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8362.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8362.2 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 M06-2X/6-31G
ABC
5.19730 0.30697 0.30697

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.557
Br2 0.000 0.000 0.428
H3 0.000 1.036 -1.880
H4 0.897 -0.518 -1.880
H5 -0.897 -0.518 -1.880

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.98491.08511.08511.0851
Br21.98492.53022.53022.5302
H31.08512.53021.79401.7940
H41.08512.53021.79401.7940
H51.08512.53021.79401.7940

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 107.350 Br2 C1 H4 107.350
Br2 C1 H5 107.350 H3 C1 H4 111.507
H3 C1 H5 111.507 H4 C1 H5 111.507
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.656      
2 Br -0.012      
3 H 0.222      
4 H 0.222      
5 H 0.222      


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 -2.240 2.240
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.783 0.000 0.000
y 0.000 -25.783 0.000
z 0.000 0.000 -22.237
Traceless
 xyz
x -1.773 0.000 0.000
y 0.000 -1.773 0.000
z 0.000 0.000 3.547
Polar
3z2-r27.093
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 2.112 0.000 0.000
y 0.000 2.115 -0.001
z 0.000 -0.001 5.135


<r2> (average value of r2) Å2
<r2> 50.148
(<r2>)1/2 7.082