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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-5196.801700
Energy at 298.15K-5196.809423
HF Energy-5196.547744
Nuclear repulsion energy419.386820
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 3305 3079 2.06      
2 A1 1726 1608 20.30      
3 A1 1256 1170 2.59      
4 A1 567 528 6.90      
5 A1 114 106 0.03      
6 A2 1056 984 0.00      
7 A2 413 385 0.00      
8 B1 775 722 83.50      
9 B2 3277 3052 7.65      
10 B2 1376 1282 55.02      
11 B2 770 717 42.55      
12 B2 481 449 2.10      

Unscaled Zero Point Vibrational Energy (zpe) 7556.9 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 7040.0 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 CID/3-21G
ABC
0.27642 0.03220 0.02884

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 0.659 1.277
C2 0.000 -0.659 1.277
Br3 0.000 1.798 -0.282
Br4 0.000 -1.798 -0.282
H5 0.000 1.211 2.205
H6 0.000 -1.211 2.205

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.31861.93022.90981.07952.0879
C21.31862.90981.93022.08791.0795
Br31.93022.90983.59562.55493.9034
Br42.90981.93023.59563.90342.5549
H51.07952.08792.55493.90342.4222
H62.08791.07953.90342.55492.4222

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 126.145 C1 C2 H6 120.739
C2 C1 Br3 126.145 C2 C1 H5 120.739
Br3 C1 H5 113.116 Br4 C2 H6 113.116
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability