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 CH3CBr3 (1,1,1-tribromoethane)

using model chemistry: MP4/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 MP4/cc-pVDZ
 hartrees
Energy at 0K-7795.368004
Energy at 298.15K-7795.379752
HF Energy-7794.619939
Nuclear repulsion energy968.168157
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 MP4/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 3064 2963        
2 A1 1390 1344        
3 A1 1079 1044        
4 A1 410 397        
5 A1 217 210        
6 A2 323 312        
7 E 3173 3068        
7 E 3173 3068        
8 E 1467 1418        
8 E 1466 1417        
9 E 1080 1044        
9 E 1080 1044        
10 E 638 617        
10 E 638 617        
11 E 279 270        
11 E 279 270        
12 E 151 146        
12 E 151 146        

Unscaled Zero Point Vibrational Energy (zpe) 10028.9 cm-1
Scaled (by 0.9669) Zero Point Vibrational Energy (zpe) 9696.9 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 MP4/cc-pVDZ
ABC
0.03476 0.03476 0.02061

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.456
C2 0.000 0.000 1.985
Br3 0.000 1.855 -0.207
Br4 1.607 -0.928 -0.207
Br5 -1.607 -0.928 -0.207
H6 0.000 -1.042 2.350
H7 0.902 0.521 2.350
H8 -0.902 0.521 2.350

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.52871.96981.96981.96982.16152.16152.1615
C21.52872.87092.87092.87091.10401.10401.1040
Br31.96982.87093.21303.21303.86353.02133.0213
Br41.96982.87093.21303.21303.02133.02133.8635
Br51.96982.87093.21303.21303.02133.86353.0213
H62.16151.10403.86353.02133.02131.80471.8047
H72.16151.10403.02133.02133.86351.80471.8047
H82.16151.10403.02133.86353.02131.80471.8047

picture of 1,1,1-tribromoethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.310 C1 C2 H7 109.310
C1 C2 H8 109.310 C2 C1 Br3 109.651
C2 C1 Br4 109.651 C2 C1 Br5 109.651
Br3 C1 Br4 109.291 Br3 C1 Br5 109.291
Br4 C1 Br5 109.291 H6 C2 H7 109.632
H6 C2 H8 109.632 H7 C2 H8 109.632
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability