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

using model chemistry: CCSD/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C2 1A

Conformer 1 (C2H)

Jump to S1C2
Energy calculated at CCSD/Def2TZVPP
 hartrees
Energy at 0K-5223.859357
Energy at 298.15K 
HF Energy-5222.931498
Nuclear repulsion energy419.853624
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 CCSD/Def2TZVPP
Rotational Constants (cm-1) from geometry optimized at CCSD/Def2TZVPP
See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/Def2TZVPP
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at CCSD/Def2TZVPP
 hartrees
Energy at 0K-5223.856409
Energy at 298.15K 
HF Energy-5222.927349
Nuclear repulsion energy453.824644
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 CCSD/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3182 3182 0.20      
2 A 3125 3125 15.77      
3 A 1489 1489 0.28      
4 A 1341 1341 18.69      
5 A 1219 1219 1.29      
6 A 1061 1061 0.39      
7 A 931 931 5.89      
8 A 589 589 6.21      
9 A 231 231 0.94      
10 A 82 82 0.23      
11 B 3194 3194 1.29      
12 B 3116 3116 2.24      
13 B 1485 1485 9.75      
14 B 1310 1310 58.90      
15 B 1148 1148 2.09      
16 B 868 868 14.21      
17 B 624 624 10.63      
18 B 364 364 4.59      

Unscaled Zero Point Vibrational Energy (zpe) 12678.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12678.5 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 CCSD/Def2TZVPP
ABC
0.25647 0.03106 0.02852

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/Def2TZVPP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.311 0.688 1.174
C2 -0.311 -0.688 1.174
Br3 -0.311 1.791 -0.292
Br4 0.311 -1.791 -0.292
H5 0.033 1.213 2.084
H6 1.392 0.640 1.096
H7 -0.033 -1.213 2.084
H8 -1.392 -0.640 1.096

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6 H7 H8
C11.51091.93682.88001.08671.08452.13612.1612
C21.51092.88001.93682.13612.16121.08671.0845
Br31.93682.88003.63482.46922.47973.84003.0003
Br42.88001.93683.63483.84003.00032.46922.4797
H51.08672.13612.46923.84001.77512.42742.5381
H61.08452.16122.47973.00031.77512.53813.0638
H72.13611.08673.84002.46922.42742.53811.7751
H82.16121.08453.00032.47972.53813.06381.7751

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 112.724 C1 C2 H7 109.560
C1 C2 H8 111.702 C2 C1 Br3 112.724
C2 C1 H5 109.560 C2 C1 H6 111.702
Br3 C1 H5 106.071 Br3 C1 H6 106.905
Br4 C2 H7 106.071 Br4 C2 H8 106.905
H5 C1 H6 109.683 H7 C2 H8 109.683
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability