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

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-2653.347374
Energy at 298.15K 
HF Energy-2653.347374
Nuclear repulsion energy163.519947
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 B3PW91/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3117 3000 32.59      
2 A' 3102 2986 2.67      
3 A' 3040 2927 22.17      
4 A' 1511 1455 3.78      
5 A' 1495 1439 1.89      
6 A' 1419 1366 7.97      
7 A' 1291 1243 59.66      
8 A' 1091 1050 0.18      
9 A' 983 947 18.64      
10 A' 567 545 16.58      
11 A' 285 274 2.26      
12 A" 3171 3053 15.31      
13 A" 3133 3016 8.39      
14 A" 1496 1441 11.76      
15 A" 1274 1226 1.09      
16 A" 1045 1006 0.38      
17 A" 776 747 6.16      
18 A" 263 254 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14529.1 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 13987.2 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 B3PW91/6-311G*
ABC
1.01325 0.12509 0.11620

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.571 -2.036 0.000
C2 0.596 -1.077 0.000
Br3 0.000 0.797 0.000
H4 1.219 -1.180 0.887
H5 1.219 -1.180 -0.887
H6 -0.195 -3.066 0.000
H7 -1.197 -1.905 0.885
H8 -1.197 -1.905 -0.885

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51032.89042.17352.17351.09611.09191.0919
C21.51031.96671.08901.08902.14002.16372.1637
Br32.89041.96672.48672.48673.86793.08493.0849
H42.17351.08902.48671.77362.51822.52263.0826
H52.17351.08902.48671.77362.51823.08262.5226
H61.09612.14003.86792.51822.51821.77061.7706
H71.09192.16373.08492.52263.08261.77061.7698
H81.09192.16373.08493.08262.52261.77061.7698

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 111.793 C1 C2 H4 112.471
C1 C2 H5 112.471 C2 C1 H6 109.355
C2 C1 H7 111.499 C2 C1 H8 111.499
Br3 C2 H4 105.292 Br3 C2 H5 105.292
H4 C2 H5 109.033 H6 C1 H7 108.042
H6 C1 H8 108.042 H7 C1 H8 108.281
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.645      
2 C -0.533      
3 Br -0.070      
4 H 0.267      
5 H 0.267      
6 H 0.229      
7 H 0.242      
8 H 0.242      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.485 -2.159 0.000 2.213
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.879 -1.056 0.000
y -1.056 -29.905 0.000
z 0.000 0.000 -32.154
Traceless
 xyz
x -0.850 -1.056 0.000
y -1.056 2.111 0.000
z 0.000 0.000 -1.262
Polar
3z2-r2-2.523
x2-y2-1.974
xy-1.056
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.884 -0.251 0.000
y -0.251 7.845 0.000
z 0.000 0.000 4.458


<r2> (average value of r2) Å2
<r2> 106.182
(<r2>)1/2 10.304