return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CHBr3 (bromoform)

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-7748.598879
Energy at 298.15K-7748.608665
HF Energy-7748.091780
Nuclear repulsion energy802.571338
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 QCISD/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3237 3083 1.98      
2 A1 542 516 1.34      
3 A1 227 216 0.02      
4 E 1197 1140 34.90      
4 E 1197 1140 34.90      
5 E 676 644 78.30      
5 E 676 644 78.31      
6 E 162 154 0.01      
6 E 162 154 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 4037.4 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 3844.8 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 QCISD/6-31G*
ABC
0.04081 0.04081 0.02075

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.543
H2 0.000 0.000 1.629
Br3 0.000 1.860 -0.047
Br4 1.611 -0.930 -0.047
Br5 -1.611 -0.930 -0.047

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4 Br5
C11.08631.95111.95111.9511
H21.08632.50342.50342.5034
Br31.95112.50343.22163.2216
Br41.95112.50343.22163.2216
Br51.95112.50343.22163.2216

picture of bromoform state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 107.578 H2 C1 Br4 107.578
H2 C1 Br5 107.578 Br3 C1 Br4 111.297
Br3 C1 Br5 111.297 Br4 C1 Br5 111.297
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability