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

using model chemistry: CID/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
1 2 no C2 1A

Conformer 1 (C2H)

Jump to S1C2
Energy calculated at CID/6-31G*
 hartrees
Energy at 0K-5218.294994
Energy at 298.15K-5218.305265
HF Energy-5217.847284
Nuclear repulsion energy417.564794
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 CID/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3238 2991 0.00      
2 Ag 1579 1459 0.00      
3 Ag 1380 1274 0.00      
4 Ag 1126 1041 0.00      
5 Ag 719 664 0.00      
6 Ag 201 185 0.00      
7 Au 3323 3070 0.47      
8 Au 1169 1080 3.20      
9 Au 788 728 3.82      
10 Au 108 100 5.23      
11 Bg 3303 3051 0.00      
12 Bg 1360 1257 0.00      
13 Bg 999 922 0.00      
14 Bu 3243 2995 6.70      
15 Bu 1572 1452 8.28      
16 Bu 1287 1189 65.30      
17 Bu 636 588 67.93      
18 Bu 192 177 6.96      

Unscaled Zero Point Vibrational Energy (zpe) 13111.9 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 12111.5 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 CID/6-31G*
ABC
0.95099 0.01971 0.01945

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.493 0.571 0.000
C2 -0.493 -0.571 0.000
Br3 -0.493 2.263 0.000
Br4 0.493 -2.263 0.000
H5 1.113 0.572 0.888
H6 1.113 0.572 -0.888
H7 -1.113 -0.572 0.888
H8 -1.113 -0.572 -0.888

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6 H7 H8
C11.50891.95782.83431.08361.08362.16232.1623
C21.50892.83431.95782.16232.16231.08361.0836
Br31.95782.83434.63202.49572.49573.03493.0349
Br42.83431.95784.63203.03493.03492.49572.4957
H51.08362.16232.49573.03491.77632.50353.0696
H61.08362.16232.49573.03491.77633.06962.5035
H72.16231.08363.03492.49572.50353.06961.7763
H82.16231.08363.03492.49573.06962.50351.7763

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 109.000 C1 C2 H7 111.999
C1 C2 H8 111.999 C2 C1 Br3 109.000
C2 C1 H5 111.999 C2 C1 H6 111.999
Br3 C1 H5 106.728 Br3 C1 H6 106.728
Br4 C2 H7 106.728 Br4 C2 H8 106.728
H5 C1 H6 110.103 H7 C2 H8 110.103
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at CID/6-31G*
 hartrees
Energy at 0K-5218.292462
Energy at 298.15K 
HF Energy-5217.843920
Nuclear repulsion energy455.239398
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 CID/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3286 3035 0.04      
2 A 3221 2975 14.92      
3 A 1565 1445 0.06      
4 A 1394 1288 27.39      
5 A 1268 1171 1.71      
6 A 1092 1008 0.24      
7 A 966 892 6.88      
8 A 592 546 10.55      
9 A 239 221 1.12      
10 A 92 85 0.26      
11 B 3297 3046 1.14      
12 B 3211 2966 1.89      
13 B 1555 1437 10.80      
14 B 1364 1260 62.23      
15 B 1187 1097 2.42      
16 B 897 829 15.46      
17 B 627 580 12.76      
18 B 376 348 6.97      

Unscaled Zero Point Vibrational Energy (zpe) 13114.4 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 12113.8 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 CID/6-31G*
ABC
0.24744 0.03181 0.02903

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.309 0.689 1.202
C2 -0.309 -0.689 1.202
Br3 -0.309 1.768 -0.298
Br4 0.309 -1.768 -0.298
H5 0.018 1.226 2.101
H6 1.390 0.646 1.131
H7 -0.018 -1.226 2.101
H8 -1.390 -0.646 1.131

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6 H7 H8
C11.51011.94832.87901.08671.08412.14072.1615
C21.51012.87901.94832.14072.16151.08671.0841
Br31.94832.87903.58982.48122.48733.84783.0070
Br42.87901.94833.58983.84783.00702.48122.4873
H51.08672.14072.48123.84781.77672.45232.5351
H61.08412.16152.48733.00701.77672.53513.0650
H72.14071.08673.84782.48122.45232.53511.7767
H82.16151.08413.00702.48732.53513.06501.7767

picture of Ethane, 1,2-dibromo- state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br4 112.086 C1 C2 H7 109.979
C1 C2 H8 111.811 C2 C1 Br3 112.086
C2 C1 H5 109.979 C2 C1 H6 111.811
Br3 C1 H5 106.176 Br3 C1 H6 106.720
Br4 C2 H7 106.176 Br4 C2 H8 106.720
H5 C1 H6 109.869 H7 C2 H8 109.869
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability