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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-2653.354194
Energy at 298.15K 
HF Energy-2653.354194
Nuclear repulsion energy163.505416
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' 3115 3000 25.54 68.96 0.49 0.66
2 A' 3099 2985 3.35 132.10 0.21 0.35
3 A' 3038 2926 18.33 176.03 0.06 0.12
4 A' 1494 1439 3.15 8.80 0.75 0.86
5 A' 1481 1427 1.71 9.14 0.73 0.84
6 A' 1407 1355 6.62 3.88 0.73 0.84
7 A' 1280 1233 57.25 4.17 0.65 0.79
8 A' 1084 1044 0.11 3.76 0.44 0.61
9 A' 979 943 18.82 4.62 0.71 0.83
10 A' 570 549 16.16 18.27 0.26 0.42
11 A' 285 275 2.33 2.39 0.50 0.67
12 A" 3169 3052 11.35 28.16 0.75 0.86
13 A" 3131 3016 7.13 90.43 0.75 0.86
14 A" 1478 1424 10.46 10.75 0.75 0.86
15 A" 1263 1217 0.90 3.04 0.75 0.86
16 A" 1036 998 0.18 5.15 0.75 0.86
17 A" 774 746 5.79 0.23 0.75 0.86
18 A" 263 253 0.00 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14473.5 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 13939.4 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
1.01409 0.12500 0.11615

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 -2.038 0.000
C2 0.595 -1.077 0.000
Br3 0.000 0.798 0.000
H4 1.218 -1.177 0.888
H5 1.218 -1.177 -0.888
H6 -0.191 -3.065 0.000
H7 -1.196 -1.905 0.886
H8 -1.196 -1.905 -0.886

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51122.89212.17432.17431.09591.09181.0918
C21.51121.96671.08891.08892.13852.16302.1630
Br32.89211.96672.48412.48413.86783.08523.0852
H42.17431.08892.48411.77622.51752.52073.0821
H52.17431.08892.48411.77622.51753.08212.5207
H61.09592.13853.86782.51752.51751.77211.7721
H71.09182.16303.08522.52073.08211.77211.7711
H81.09182.16303.08523.08212.52071.77211.7711

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 111.858 C1 C2 H4 112.476
C1 C2 H5 112.476 C2 C1 H6 109.187
C2 C1 H7 111.377 C2 C1 H8 111.377
Br3 C2 H4 105.121 Br3 C2 H5 105.121
H4 C2 H5 109.284 H6 C1 H7 108.199
H6 C1 H8 108.199 H7 C1 H8 108.399
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 -0.329      
2 C -0.353      
3 Br -0.093      
4 H 0.178      
5 H 0.178      
6 H 0.130      
7 H 0.144      
8 H 0.144      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.476 -2.153 0.000 2.205
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.815 -0.996 0.000
y -0.996 -29.842 0.000
z 0.000 0.000 -32.134
Traceless
 xyz
x -0.826 -0.996 0.000
y -0.996 2.132 0.000
z 0.000 0.000 -1.306
Polar
3z2-r2-2.612
x2-y2-1.972
xy-0.996
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.955 -0.241 0.000
y -0.241 7.930 0.000
z 0.000 0.000 4.517


<r2> (average value of r2) Å2
<r2> 106.178
(<r2>)1/2 10.304