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All results from a given calculation for CHBrCHBr (Ethene, 1,2-dibromo-, (Z)-)

using model chemistry: QCISD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-5196.834526
Energy at 298.15K-5196.842166
HF Energy-5196.546550
Nuclear repulsion energy417.005665
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/3-21G
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 3232 3132 3.05      
2 A1 1658 1607 19.83      
3 A1 1223 1186 2.84      
4 A1 546 529 6.48      
5 A1 111 107 0.02      
6 A2 1005 974 0.00      
7 A2 395 383 0.00      
8 B1 746 723 76.95      
9 B2 3205 3106 6.32      
10 B2 1342 1301 52.69      
11 B2 746 723 40.51      
12 B2 464 450 2.03      

Unscaled Zero Point Vibrational Energy (zpe) 7336.0 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 7110.0 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/3-21G
ABC
0.27199 0.03189 0.02855

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.664 1.288
C2 0.000 -0.664 1.288
Br3 0.000 1.806 -0.284
Br4 0.000 -1.806 -0.284
H5 0.000 1.222 2.218
H6 0.000 -1.222 2.218

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32901.94282.92841.08492.1035
C21.32902.92841.94282.10351.0849
Br31.94282.92843.61252.57003.9285
Br42.92841.94283.61253.92852.5700
H51.08492.10352.57003.92852.4438
H62.10351.08493.92852.57002.4438

picture of Ethene, 1,2-dibromo-, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br4 125.992 C1 C2 H6 120.919
C2 C1 Br3 125.992 C2 C1 H5 120.919
Br3 C1 H5 113.089 Br4 C2 H6 113.089
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability