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

using model chemistry: B3LYP/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3LYP/cc-pVDZ
 hartrees
Energy at 0K-2614.066876
Energy at 298.15K 
HF Energy-2614.066876
Nuclear repulsion energy88.225916
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 B3LYP/cc-pVDZ
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 3077 2985 16.37      
2 A1 1304 1265 25.71      
3 A1 592 575 13.28      
4 E 3196 3100 2.15      
4 E 3196 3100 2.14      
5 E 1444 1401 5.93      
5 E 1444 1401 5.93      
6 E 948 920 5.58      
6 E 948 920 5.58      

Unscaled Zero Point Vibrational Energy (zpe) 8074.7 cm-1
Scaled (by 0.97) Zero Point Vibrational Energy (zpe) 7832.4 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 B3LYP/cc-pVDZ
ABC
5.11899 0.31272 0.31272

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.538
Br2 0.000 0.000 0.424
H3 0.000 1.044 -1.872
H4 0.904 -0.522 -1.872
H5 -0.904 -0.522 -1.872

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.96241.09591.09591.0959
Br21.96242.52262.52262.5226
H31.09592.52261.80761.8076
H41.09592.52261.80761.8076
H51.09592.52261.80761.8076

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 107.757 Br2 C1 H4 107.757
Br2 C1 H5 107.757 H3 C1 H4 111.130
H3 C1 H5 111.130 H4 C1 H5 111.130
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.111      
2 Br -0.129      
3 H 0.080      
4 H 0.080      
5 H 0.080      


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 -1.836 1.836
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.539 0.000 0.000
y 0.000 -25.539 0.000
z 0.000 0.000 -21.874
Traceless
 xyz
x -1.833 0.000 0.000
y 0.000 -1.833 0.000
z 0.000 0.000 3.665
Polar
3z2-r27.331
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 2.947 0.000 0.000
y 0.000 2.947 0.000
z 0.000 0.000 5.484


<r2> (average value of r2) Å2
<r2> 49.467
(<r2>)1/2 7.033