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

using model chemistry: CID/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 CID/3-21G*
 hartrees
Energy at 0K-5197.382248
Energy at 298.15K-5197.389987
HF Energy-5196.977696
Nuclear repulsion energy430.329151
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/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 3312 3082 1.04      
2 A1 1707 1588 21.77      
3 A1 1271 1183 1.99      
4 A1 617 574 8.77      
5 A1 117 109 0.04      
6 A2 994 925 0.00      
7 A2 398 371 0.00      
8 B1 750 698 71.38      
9 B2 3284 3056 11.80      
10 B2 1392 1295 35.68      
11 B2 803 748 44.77      
12 B2 491 457 2.17      

Unscaled Zero Point Vibrational Energy (zpe) 7568.1 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 7042.1 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/3-21G*
ABC
0.27547 0.03470 0.03082

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.662 1.280
C2 0.000 -0.662 1.280
Br3 0.000 1.730 -0.282
Br4 0.000 -1.730 -0.282
H5 0.000 1.229 2.199
H6 0.000 -1.229 2.199

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32411.89272.85711.07902.1021
C21.32412.85711.89272.10211.0790
Br31.89272.85713.45962.53103.8612
Br42.85711.89273.45963.86122.5310
H51.07902.10212.53103.86122.4579
H62.10211.07903.86122.53102.4579

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 124.342 C1 C2 H6 121.695
C2 C1 Br3 124.342 C2 C1 H5 121.695
Br3 C1 H5 113.963 Br4 C2 H6 113.963
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability