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

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-116.472503
Energy at 298.15K-116.484118
HF Energy-116.191678
Nuclear repulsion energy114.859619
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/LANL2DZ
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 3041 2928 9.99      
2 A1 1469 1415 7.14      
3 A1 1054 1015 6.76      
4 A1 381 367 4.25      
5 A1 206 199 0.00      
6 A2 324 312 0.00      
7 E 3156 3040 8.79      
7 E 3156 3040 8.79      
8 E 1510 1454 6.98      
8 E 1510 1454 6.98      
9 E 1129 1087 54.88      
9 E 1129 1087 54.88      
10 E 600 578 50.63      
10 E 600 578 50.63      
11 E 273 263 1.40      
11 E 273 263 1.40      
12 E 147 141 0.01      
12 E 147 141 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 10051.7 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 9680.8 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 MP2/LANL2DZ
ABC
0.03254 0.03254 0.01920

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.474
C2 0.000 0.000 2.022
Br3 0.000 1.922 -0.211
Br4 1.665 -0.961 -0.211
Br5 -1.665 -0.961 -0.211
H6 0.000 -1.037 2.398
H7 0.898 0.518 2.398
H8 -0.898 0.518 2.398

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.54822.04032.04032.04032.18552.18552.1855
C21.54822.94622.94622.94621.10271.10271.1027
Br32.04032.94623.32903.32903.94453.09553.0955
Br42.04032.94623.32903.32903.09553.09553.9445
Br52.04032.94623.32903.32903.09553.94453.0955
H62.18551.10273.94453.09553.09551.79561.7956
H72.18551.10273.09553.09553.94451.79561.7956
H82.18551.10273.09553.94453.09551.79561.7956

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 109.923 C1 C2 H7 109.923
C1 C2 H8 109.923 C2 C1 Br3 109.610
C2 C1 Br4 109.610 C2 C1 Br5 109.610
Br3 C1 Br4 109.332 Br3 C1 Br5 109.332
Br4 C1 Br5 109.332 H6 C2 H7 109.015
H6 C2 H8 109.015 H7 C2 H8 109.015
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability