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

using model chemistry: MP2=FULL/cc-pVTZ

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=FULL/cc-pVTZ
 hartrees
Energy at 0K-7796.079675
Energy at 298.15K-7796.091575
HF Energy-7794.874445
Nuclear repulsion energy988.931856
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=FULL/cc-pVTZ
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 3101 2944 2.00      
2 A1 1410 1338 8.15      
3 A1 1099 1043 4.42      
4 A1 427 406 3.24      
5 A1 226 215 0.04      
6 A2 355 337 0.00      
7 E 3190 3029 1.58      
7 E 3190 3029 1.58      
8 E 1495 1419 3.41      
8 E 1495 1419 3.41      
9 E 1095 1040 41.84      
9 E 1095 1040 41.84      
10 E 678 644 60.29      
10 E 678 644 60.30      
11 E 285 270 0.80      
11 E 285 270 0.80      
12 E 156 148 0.03      
12 E 156 148 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 10207.1 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 9690.6 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 MP2=FULL/cc-pVTZ
ABC
0.03627 0.03627 0.02151

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.441
C2 0.000 0.000 1.946
Br3 0.000 1.816 -0.202
Br4 1.573 -0.908 -0.202
Br5 -1.573 -0.908 -0.202
H6 0.000 -1.024 2.302
H7 0.887 0.512 2.302
H8 -0.887 0.512 2.302

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.50431.92661.92661.92662.12372.12372.1237
C21.50432.81262.81262.81261.08431.08431.0843
Br31.92662.81263.14533.14533.78632.95912.9591
Br41.92662.81263.14533.14532.95912.95913.7863
Br51.92662.81263.14533.14532.95913.78632.9591
H62.12371.08433.78632.95912.95911.77391.7739
H72.12371.08432.95912.95913.78631.77391.7739
H82.12371.08432.95913.78632.95911.77391.7739

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 109.174 C1 C2 H7 109.174
C1 C2 H8 109.174 C2 C1 Br3 109.514
C2 C1 Br4 109.514 C2 C1 Br5 109.514
Br3 C1 Br4 109.428 Br3 C1 Br5 109.428
Br4 C1 Br5 109.428 H6 C2 H7 109.767
H6 C2 H8 109.767 H7 C2 H8 109.767
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability