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

using model chemistry: QCISD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-7787.872787
Energy at 298.15K-7787.884712
HF Energy-7787.194767
Nuclear repulsion energy977.134882
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 QCISD/6-31+G**
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 3115 2945 4.45      
2 A1 1469 1389 5.09      
3 A1 1104 1044 2.57      
4 A1 427 403 3.79      
5 A1 227 214 0.03      
6 A2 367 347 0.00      
7 E 3214 3039 3.19      
7 E 3214 3039 3.19      
8 E 1532 1449 3.80      
8 E 1532 1449 3.80      
9 E 1136 1074 38.95      
9 E 1136 1074 38.95      
10 E 663 627 66.11      
10 E 663 627 66.10      
11 E 294 278 1.03      
11 E 294 278 1.03      
12 E 159 151 0.04      
12 E 159 151 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 10352.9 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 9787.6 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 QCISD/6-31+G**
ABC
0.03540 0.03540 0.02105

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.465
C2 0.000 0.000 1.983
Br3 0.000 1.835 -0.207
Br4 1.589 -0.918 -0.207
Br5 -1.589 -0.918 -0.207
H6 0.000 -1.028 2.344
H7 0.890 0.514 2.344
H8 -0.890 0.514 2.344

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51791.95431.95431.95432.14152.14152.1415
C21.51792.85702.85702.85701.08941.08941.0894
Br31.95432.85703.17883.17883.83433.00713.0071
Br41.95432.85703.17883.17883.00713.00713.8343
Br51.95432.85703.17883.17883.00713.83433.0071
H62.14151.08943.83433.00713.00711.78031.7803
H72.14151.08943.00713.00713.83431.78031.7803
H82.14151.08943.00713.83433.00711.78031.7803

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 109.344 C1 C2 H7 109.344
C1 C2 H8 109.344 C2 C1 Br3 110.101
C2 C1 Br4 110.101 C2 C1 Br5 110.101
Br3 C1 Br4 108.834 Br3 C1 Br5 108.834
Br4 C1 Br5 108.834 H6 C2 H7 109.598
H6 C2 H8 109.598 H7 C2 H8 109.598
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability