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All results from a given calculation for CH2BrCH2Br (Ethane, 1,2-dibromo-)

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-5218.389100
Energy at 298.15K-5218.399259
HF Energy-5217.846482
Nuclear repulsion energy414.607990
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 MP4/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3132 2990        
2 Ag 1530 1460        
3 Ag 1320 1261        
4 Ag 1092 1042        
5 Ag 683 652        
6 Ag 192 184        
7 Au 3219 3073        
8 Au 1119 1069        
9 Au 764 729        
10 Au 103 98        
11 Bg 3199 3054        
12 Bg 1313 1254        
13 Bg 960 917        
14 Bu 3138 2996        
15 Bu 1523 1454        
16 Bu 1231 1175        
17 Bu 604 577        
18 Bu 183 174        

Unscaled Zero Point Vibrational Energy (zpe) 12651.5 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 12079.7 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 MP4/6-31G*
ABC
0.93528 0.01945 0.01920

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.498 0.571 0.000
C2 -0.498 -0.571 0.000
Br3 -0.498 2.278 0.000
Br4 0.498 -2.278 0.000
H5 1.122 0.571 0.896
H6 1.122 0.571 -0.896
H7 -1.122 -0.571 0.896
H8 -1.122 -0.571 -0.896

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6 H7 H8
C11.51461.97632.84831.09241.09242.17532.1753
C21.51462.84831.97632.17532.17531.09241.0924
Br31.97632.84834.66302.51822.51823.05103.0510
Br42.84831.97634.66303.05103.05102.51822.5182
H51.09242.17532.51823.05101.79242.51883.0914
H61.09242.17532.51823.05101.79243.09142.5188
H72.17531.09243.05102.51822.51883.09141.7924
H82.17531.09243.05102.51823.09142.51881.7924

picture of Ethane, 1,2-dibromo- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br4 108.641 C1 C2 H7 112.099
C1 C2 H8 112.099 C2 C1 Br3 108.641
C2 C1 H5 112.099 C2 C1 H6 112.099
Br3 C1 H5 106.722 Br3 C1 H6 106.722
Br4 C2 H7 106.722 Br4 C2 H8 106.722
H5 C1 H6 110.251 H7 C2 H8 110.251
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability