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All results from a given calculation for CHBr3 (bromoform)

using model chemistry: CISD/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 CISD/6-31G*
 hartrees
Energy at 0K-7748.521657
Energy at 298.15K-7748.531521
HF Energy-7748.092332
Nuclear repulsion energy807.446099
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 CISD/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 3325 3078 2.94      
2 A1 559 518 1.43      
3 A1 235 217 0.02      
4 E 1239 1147 37.46      
4 E 1239 1147 37.46      
5 E 709 656 79.39      
5 E 709 656 79.39      
6 E 167 155 0.02      
6 E 167 155 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 4174.9 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 3865.1 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 CISD/6-31G*
ABC
0.04130 0.04130 0.02099

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.539
H2 0.000 0.000 1.618
Br3 0.000 1.842 -0.046
Br4 1.595 -0.921 -0.046
Br5 -1.595 -0.921 -0.046

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4 Br5
C11.07841.93261.93261.9326
H21.07842.48212.48212.4821
Br31.93262.48213.19013.1901
Br41.93262.48213.19013.1901
Br51.93262.48213.19013.1901

picture of bromoform state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 107.632 H2 C1 Br4 107.632
H2 C1 Br5 107.632 Br3 C1 Br4 111.246
Br3 C1 Br5 111.246 Br4 C1 Br5 111.246
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability