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All results from a given calculation for CHBr3 (bromoform)

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-7723.878353
Energy at 298.15K-7723.888040
Nuclear repulsion energy782.600567
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/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 3235 3122 0.12      
2 A1 506 489 0.91      
3 A1 216 208 0.00      
4 E 1191 1149 32.91      
4 E 1191 1149 32.92      
5 E 644 621 128.84      
5 E 644 621 128.85      
6 E 149 144 0.00      
6 E 149 144 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 3962.1 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 3823.0 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/3-21G
ABC
0.03872 0.03872 0.01964

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.521
H2 0.000 0.000 1.603
Br3 0.000 1.904 -0.045
Br4 1.649 -0.952 -0.045
Br5 -1.649 -0.952 -0.045

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4 Br5
C11.08201.98611.98611.9861
H21.08202.51792.51792.5179
Br31.98612.51793.29763.2976
Br41.98612.51793.29763.2976
Br51.98612.51793.29763.2976

picture of bromoform state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 106.550 H2 C1 Br4 106.550
H2 C1 Br5 106.550 Br3 C1 Br4 112.228
Br3 C1 Br5 112.228 Br4 C1 Br5 112.228
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.854      
2 H 0.342      
3 Br 0.171      
4 Br 0.171      
5 Br 0.171      


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 1.086 1.086
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -60.094 0.000 0.000
y 0.000 -60.094 0.000
z 0.000 0.000 -58.972
Traceless
 xyz
x -0.561 0.000 0.000
y 0.000 -0.561 0.000
z 0.000 0.000 1.122
Polar
3z2-r22.244
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 8.704 0.000 0.000
y 0.000 8.704 0.000
z 0.000 0.000 3.106


<r2> (average value of r2) Å2
<r2> 422.299
(<r2>)1/2 20.550