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All results from a given calculation for CHBr3 (bromoform)

using model chemistry: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-7719.021965
Energy at 298.15K-7719.031888
Nuclear repulsion energy808.481908
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 HF/3-21G*
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 3385 3056 2.15      
2 A1 578 522 1.22      
3 A1 234 211 0.01      
4 E 1308 1180 32.78      
4 E 1308 1180 32.78      
5 E 755 682 70.33      
5 E 755 682 70.33      
6 E 164 148 0.06      
6 E 164 148 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 4326.2 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 3904.8 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 HF/3-21G*
ABC
0.04142 0.04142 0.02105

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.545
H2 0.000 0.000 1.616
Br3 0.000 1.839 -0.047
Br4 1.593 -0.920 -0.047
Br5 -1.593 -0.920 -0.047

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4 Br5
C11.07041.93191.93191.9319
H21.07042.47902.47902.4790
Br31.93192.47903.18533.1853
Br41.93192.47903.18533.1853
Br51.93192.47903.18533.1853

picture of bromoform state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 107.843 H2 C1 Br4 107.843
H2 C1 Br5 107.843 Br3 C1 Br4 111.049
Br3 C1 Br5 111.049 Br4 C1 Br5 111.049
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.379      
2 H 0.331      
3 Br 0.016      
4 Br 0.016      
5 Br 0.016      


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 1.030 1.030
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -60.044 0.000 0.000
y 0.000 -60.044 0.000
z 0.000 0.000 -58.949
Traceless
 xyz
x -0.548 0.000 0.000
y 0.000 -0.548 0.000
z 0.000 0.000 1.096
Polar
3z2-r22.191
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 9.163 0.000 0.000
y 0.000 9.163 0.000
z 0.000 0.000 5.230


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000