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All results from a given calculation for CHBr3 (bromoform)

using model chemistry: MP2/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/aug-cc-pVDZ
 hartrees
Energy at 0K-7756.170177
Energy at 298.15K-7756.180003
HF Energy-7755.593075
Nuclear repulsion energy805.303822
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 MP2/aug-cc-pVDZ
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 3197 3066 5.78      
2 A1 552 530 0.30      
3 A1 230 221 0.00      
4 E 1178 1130 29.33      
4 E 1178 1130 29.33      
5 E 690 661 81.16      
5 E 690 661 81.16      
6 E 159 153 0.00      
6 E 159 153 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 4016.6 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 3851.9 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 MP2/aug-cc-pVDZ
ABC
0.04108 0.04108 0.02087

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.533
H2 0.000 0.000 1.627
Br3 0.000 1.847 -0.046
Br4 1.600 -0.924 -0.046
Br5 -1.600 -0.924 -0.046

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4 Br5
C11.09451.93561.93561.9356
H21.09452.49232.49232.4923
Br31.93562.49233.19923.1992
Br41.93562.49233.19923.1992
Br51.93562.49233.19923.1992

picture of bromoform state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 107.398 H2 C1 Br4 107.398
H2 C1 Br5 107.398 Br3 C1 Br4 111.463
Br3 C1 Br5 111.463 Br4 C1 Br5 111.463
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability