return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for CHBr3 (bromoform)

using model chemistry: CCD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCD/6-31G**
 hartrees
Energy at 0K-7748.601742
Energy at 298.15K-7748.611559
HF Energy-7748.094027
Nuclear repulsion energy803.718475
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 CCD/6-31G**
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 3276 3071 1.50      
2 A1 545 511 1.25      
3 A1 229 214 0.02      
4 E 1208 1133 35.47      
4 E 1208 1133 35.47      
5 E 688 645 70.75      
5 E 688 645 70.75      
6 E 163 153 0.02      
6 E 163 153 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 4083.7 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 3828.9 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 CCD/6-31G**
ABC
0.04092 0.04092 0.02079

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.541
H2 0.000 0.000 1.622
Br3 0.000 1.850 -0.046
Br4 1.603 -0.925 -0.046
Br5 -1.603 -0.925 -0.046

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4 Br5
C11.08061.94151.94151.9415
H21.08062.49132.49132.4913
Br31.94152.49133.20513.2051
Br41.94152.49133.20513.2051
Br51.94152.49133.20513.2051

picture of bromoform state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 107.611 H2 C1 Br4 107.611
H2 C1 Br5 107.611 Br3 C1 Br4 111.266
Br3 C1 Br5 111.266 Br4 C1 Br5 111.266
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability