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

using model chemistry: HF/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at HF/cc-pVQZ
 hartrees
Energy at 0K-5221.829217
Energy at 298.15K-5221.837035
HF Energy-5221.829217
Nuclear repulsion energy428.038016
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 HF/cc-pVQZ
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 3379 3069 0.55      
2 A1 1783 1620 30.86      
3 A1 1292 1173 2.96      
4 A1 620 563 9.01      
5 A1 118 107 0.09      
6 A2 1052 955 0.00      
7 A2 421 382 0.00      
8 B1 774 703 60.81      
9 B2 3354 3047 17.74      
10 B2 1407 1278 64.47      
11 B2 819 744 61.15      
12 B2 508 461 3.67      

Unscaled Zero Point Vibrational Energy (zpe) 7762.3 cm-1
Scaled (by 0.9084) Zero Point Vibrational Energy (zpe) 7051.3 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 HF/cc-pVQZ
ABC
0.29481 0.03325 0.02988

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.654 1.233
C2 0.000 -0.654 1.233
Br3 0.000 1.769 -0.273
Br4 0.000 -1.769 -0.273
H5 0.000 1.189 2.159
H6 0.000 -1.189 2.159

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.30721.87402.85251.06962.0624
C21.30722.85251.87402.06241.0696
Br31.87402.85253.53802.49983.8295
Br42.85251.87403.53803.82952.4998
H51.06962.06242.49983.82952.3786
H62.06241.06963.82952.49982.3786

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 126.528 C1 C2 H6 120.057
C2 C1 Br3 126.528 C2 C1 H5 120.057
Br3 C1 H5 113.415 Br4 C2 H6 113.415
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.171      
2 C -0.171      
3 Br -0.024      
4 Br -0.024      
5 H 0.195      
6 H 0.195      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.984 1.984
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -50.839 0.000 0.000
y 0.000 -49.656 0.000
z 0.000 0.000 -42.839
Traceless
 xyz
x -4.591 0.000 0.000
y 0.000 -2.818 0.000
z 0.000 0.000 7.409
Polar
3z2-r214.817
x2-y2-1.182
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.263 0.000 0.000
y 0.000 12.533 0.000
z 0.000 0.000 8.875


<r2> (average value of r2) Å2
<r2> 289.633
(<r2>)1/2 17.019