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

using model chemistry: MP2/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/cc-pVDZ
 hartrees
Energy at 0K-7795.304228
Energy at 298.15K-7795.316066
HF Energy-7794.620569
Nuclear repulsion energy974.450996
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/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 3094 2947 2.80      
2 A1 1395 1329 5.42      
3 A1 1096 1043 7.27      
4 A1 422 402 4.71      
5 A1 224 213 0.04      
6 A2 335 319 0.00      
7 E 3210 3058 1.64      
7 E 3210 3058 1.64      
8 E 1472 1402 3.52      
8 E 1472 1402 3.52      
9 E 1088 1037 45.18      
9 E 1088 1037 45.18      
10 E 662 630 69.58      
10 E 662 630 69.59      
11 E 284 271 1.14      
11 E 284 271 1.14      
12 E 155 148 0.02      
12 E 155 148 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 10154.1 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 9671.8 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/cc-pVDZ
ABC
0.03521 0.03521 0.02089

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.452
C2 0.000 0.000 1.974
Br3 0.000 1.843 -0.205
Br4 1.596 -0.921 -0.205
Br5 -1.596 -0.921 -0.205
H6 0.000 -1.039 2.339
H7 0.900 0.520 2.339
H8 -0.900 0.520 2.339

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.52241.95641.95641.95642.15382.15382.1538
C21.52242.85442.85442.85441.10111.10111.1011
Br31.95642.85443.19153.19153.84413.00543.0054
Br41.95642.85443.19153.19153.00543.00543.8441
Br51.95642.85443.19153.19153.00543.84413.0054
H62.15381.10113.84413.00543.00541.79991.7999
H72.15381.10113.00543.00543.84411.79991.7999
H82.15381.10113.00543.84413.00541.79991.7999

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 109.307 C1 C2 H7 109.307
C1 C2 H8 109.307 C2 C1 Br3 109.640
C2 C1 Br4 109.640 C2 C1 Br5 109.640
Br3 C1 Br4 109.302 Br3 C1 Br5 109.302
Br4 C1 Br5 109.302 H6 C2 H7 109.635
H6 C2 H8 109.635 H7 C2 H8 109.635
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability