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

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-5200.565072
Energy at 298.15K-5200.572743
HF Energy-5200.565072
Nuclear repulsion energy421.529271
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 B3LYP/3-21G
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 3257 3143 0.76      
2 A1 1678 1619 34.42      
3 A1 1213 1170 1.96      
4 A1 566 546 9.40      
5 A1 111 107 0.01      
6 A2 992 957 0.00      
7 A2 407 393 0.00      
8 B1 740 714 92.65      
9 B2 3232 3118 11.92      
10 B2 1325 1279 52.36      
11 B2 753 727 64.65      
12 B2 477 460 3.59      

Unscaled Zero Point Vibrational Energy (zpe) 7374.9 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 7116.1 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 B3LYP/3-21G
ABC
0.27720 0.03263 0.02920

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.660 1.275
C2 0.000 -0.660 1.275
Br3 0.000 1.785 -0.281
Br4 0.000 -1.785 -0.281
H5 0.000 1.218 2.201
H6 0.000 -1.218 2.201

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.31911.92112.89841.08102.0931
C21.31912.89841.92112.09311.0810
Br31.92112.89843.57092.54643.8963
Br42.89841.92113.57093.89632.5464
H51.08102.09312.54643.89632.4355
H62.09311.08103.89632.54642.4355

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 125.878 C1 C2 H6 121.090
C2 C1 Br3 125.878 C2 C1 H5 121.090
Br3 C1 H5 113.032 Br4 C2 H6 113.032
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.438      
2 C -0.438      
3 Br 0.179      
4 Br 0.179      
5 H 0.259      
6 H 0.259      


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 1.593 1.593
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -50.007 0.000 0.000
y 0.000 -47.292 0.000
z 0.000 0.000 -42.296
Traceless
 xyz
x -5.214 0.000 0.000
y 0.000 -1.140 0.000
z 0.000 0.000 6.354
Polar
3z2-r212.707
x2-y2-2.716
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.857 0.000 0.000
y 0.000 9.334 0.000
z 0.000 0.000 6.762


<r2> (average value of r2) Å2
<r2> 295.137
(<r2>)1/2 17.180