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All results from a given calculation for C2H5Br (Ethyl bromide)

using model chemistry: PBEPBEultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-2650.406201
Energy at 298.15K 
HF Energy-2650.406201
Nuclear repulsion energy162.589997
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 PBEPBEultrafine/6-31G*
Rotational Constants (cm-1) from geometry optimized at PBEPBEultrafine/6-31G*
ABC
0.99181 0.12415 0.11521

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.577 -2.041 0.000
C2 0.603 -1.086 0.000
Br3 0.000 0.800 0.000
H4 1.230 -1.187 0.897
H5 1.230 -1.187 -0.897
H6 -0.208 -3.084 0.000
H7 -1.206 -1.897 0.893
H8 -1.206 -1.897 -0.893

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51802.89962.19112.19111.10581.10171.1017
C21.51801.98101.09901.09902.15552.17452.1745
Br32.89961.98102.50342.50343.88963.08693.0869
H42.19111.09902.50341.79392.54392.53803.1056
H52.19111.09902.50341.79392.54393.10562.5380
H61.10582.15553.88962.54392.54391.78921.7892
H71.10172.17453.08692.53803.10561.78921.7857
H81.10172.17453.08693.10562.53801.78921.7857

picture of Ethyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br3 111.242 C1 C2 H4 112.726
C1 C2 H5 112.726 C2 C1 H6 109.472
C2 C1 H7 111.211 C2 C1 H8 111.211
Br3 C2 H4 105.104 Br3 C2 H5 105.104
H4 C2 H5 109.400 H6 C1 H7 108.292
H6 C1 H8 108.292 H7 C1 H8 108.270
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.480      
2 C -0.326      
3 Br -0.137      
4 H 0.202      
5 H 0.202      
6 H 0.169      
7 H 0.185      
8 H 0.185      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.440 -2.058 0.000 2.105
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.409 -0.974 0.001
y -0.974 -29.459 -0.001
z 0.001 -0.001 -31.779
Traceless
 xyz
x -0.790 -0.974 0.001
y -0.974 2.135 -0.001
z 0.001 -0.001 -1.345
Polar
3z2-r2-2.690
x2-y2-1.950
xy-0.974
xz0.001
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.971 -0.189 0.000
y -0.189 7.597 0.000
z 0.000 0.000 4.691


<r2> (average value of r2) Å2
<r2> 106.683
(<r2>)1/2 10.329