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All results from a given calculation for CHBr3 (bromoform)

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at G4
 hartrees
Energy at 0K-7759.550969
Energy at 298.15K-7759.544823
HF Energy-7760.307776
Nuclear repulsion energy801.014725
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/6-31G(2df,p)
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 3185 3074 3.06      
2 A1 544 525 0.75      
3 A1 228 220 0.01      
4 E 1170 1129 28.11      
4 E 1170 1129 28.08      
5 E 656 633 97.14      
5 E 656 633 97.06      
6 E 156 150 0.00      
6 E 156 150 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 3960.2 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 3821.6 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 B3LYP/6-31G(2df,p)
ABC
0.04157 0.04157 0.02112

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.528
H2 0.000 0.000 1.612
Br3 0.000 1.836 -0.046
Br4 1.590 -0.918 -0.046
Br5 -1.590 -0.918 -0.046

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4 Br5
C11.08341.92371.92371.9237
H21.08342.47332.47332.4733
Br31.92372.47333.18023.1802
Br41.92372.47333.18023.1802
Br51.92372.47333.18023.1802

picture of bromoform state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 106.737 H2 C1 Br4 106.737
H2 C1 Br5 106.737 Br3 C1 Br4 112.062
Br3 C1 Br5 112.062 Br4 C1 Br5 112.062
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.489      
2 H 0.214      
3 Br 0.091      
4 Br 0.091      
5 Br 0.091      


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 0.865 0.865
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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> 395.581
(<r2>)1/2 19.889