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

using model chemistry: QCISD/6-31G*

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/6-31G*
 hartrees
Energy at 0K-5217.157096
Energy at 298.15K-5217.164700
HF Energy-5216.641988
Nuclear repulsion energy428.302736
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/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 A1 3263 3107 1.37      
2 A1 1668 1589 22.05      
3 A1 1208 1150 2.34      
4 A1 585 557 9.01      
5 A1 118 112 0.05      
6 A2 897 854 0.00      
7 A2 370 352 0.00      
8 B1 708 674 58.73      
9 B2 3241 3087 11.35      
10 B2 1316 1254 38.89      
11 B2 768 731 46.84      
12 B2 469 447 3.01      

Unscaled Zero Point Vibrational Energy (zpe) 7305.4 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 6957.0 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/6-31G*
ABC
0.27695 0.03417 0.03041

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.667 1.275
C2 0.000 -0.667 1.275
Br3 0.000 1.743 -0.282
Br4 0.000 -1.743 -0.282
H5 0.000 1.229 2.204
H6 0.000 -1.229 2.204

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.33391.89282.86951.08552.1114
C21.33392.86951.89282.11141.0855
Br31.89282.86953.48662.53823.8748
Br42.86951.89283.48663.87482.5382
H51.08552.11142.53823.87482.4585
H62.11141.08553.87482.53822.4585

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 124.656 C1 C2 H6 121.196
C2 C1 Br3 124.656 C2 C1 H5 121.196
Br3 C1 H5 114.148 Br4 C2 H6 114.148
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability