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All results from a given calculation for CH3CBr3 (1,1,1-tribromoethane)

using model chemistry: MP4/TZVP

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/TZVP
 hartrees
Energy at 0K-7795.756815
Energy at 298.15K-7795.768561
HF Energy-7794.718562
Nuclear repulsion energy970.530640
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/TZVP
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 3065 2952        
2 A1 1434 1381        
3 A1 1070 1030        
4 A1 409 394        
5 A1 214 207        
6 A2 322 310        
7 E 3163 3045        
7 E 3162 3045        
8 E 1485 1430        
8 E 1485 1430        
9 E 1108 1067        
9 E 1108 1067        
10 E 638 614        
10 E 638 614        
11 E 280 270        
11 E 279 268        
12 E 149 143        
12 E 149 143        

Unscaled Zero Point Vibrational Energy (zpe) 10078.5 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 9704.6 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/TZVP
ABC
0.03493 0.03493 0.02068

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.453
C2 0.000 0.000 1.972
Br3 0.000 1.852 -0.205
Br4 1.604 -0.926 -0.205
Br5 -1.604 -0.926 -0.205
H6 0.000 -1.029 2.336
H7 0.891 0.515 2.336
H8 -0.891 0.515 2.336

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51891.96561.96561.96562.14532.14532.1453
C21.51892.85862.85862.85861.09141.09141.0914
Br31.96562.85863.20773.20773.84153.00663.0066
Br41.96562.85863.20773.20773.00663.00663.8415
Br51.96562.85863.20773.20773.00663.84153.0066
H62.14531.09143.84153.00663.00661.78241.7824
H72.14531.09143.00663.00663.84151.78241.7824
H82.14531.09143.00663.84153.00661.78241.7824

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 109.450 C1 C2 H7 109.450
C1 C2 H8 109.450 C2 C1 Br3 109.579
C2 C1 Br4 109.579 C2 C1 Br5 109.579
Br3 C1 Br4 109.363 Br3 C1 Br5 109.363
Br4 C1 Br5 109.363 H6 C2 H7 109.492
H6 C2 H8 109.492 H7 C2 H8 109.492
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability