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

using model chemistry: ROHF/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at ROHF/cc-pVQZ
 hartrees
Energy at 0K-2612.098141
Energy at 298.15K 
HF Energy-2612.098141
Nuclear repulsion energy89.341597
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 ROHF/cc-pVQZ
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 3224 3224 26.42      
2 A1 1456 1456 34.53      
3 A1 643 643 23.32      
4 E 3330 3330 3.67      
4 E 3330 3330 3.67      
5 E 1596 1596 5.71      
5 E 1596 1596 5.71      
6 E 1052 1052 3.23      
6 E 1052 1052 3.23      

Unscaled Zero Point Vibrational Energy (zpe) 8639.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8639.6 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 ROHF/cc-pVQZ
ABC
5.32174 0.32006 0.32006

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/cc-pVQZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.522
Br2 0.000 0.000 0.419
H3 0.000 1.024 -1.849
H4 0.886 -0.512 -1.849
H5 -0.886 -0.512 -1.849

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.94081.07471.07471.0747
Br21.94082.48882.48882.4888
H31.07472.48881.77291.7729
H41.07472.48881.77291.7729
H51.07472.48881.77291.7729

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 107.752 Br2 C1 H4 107.752
Br2 C1 H5 107.752 H3 C1 H4 111.134
H3 C1 H5 111.134 H4 C1 H5 111.134
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.206      
2 Br -0.143      
3 H 0.116      
4 H 0.116      
5 H 0.116      


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 -2.171 2.171
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.997 0.000 0.000
y 0.000 -25.998 -0.001
z 0.000 -0.001 -22.190
Traceless
 xyz
x -1.903 0.000 0.000
y 0.000 -1.904 -0.001
z 0.000 -0.001 3.807
Polar
3z2-r27.615
x2-y20.001
xy0.000
xz0.000
yz-0.001


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


<r2> (average value of r2) Å2
<r2> 48.891
(<r2>)1/2 6.992