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

using model chemistry: B3PW91/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-2653.350855
Energy at 298.15K 
HF Energy-2653.350855
Nuclear repulsion energy163.370756
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/aug-cc-pVDZ
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' 3124 3014 19.37 71.72 0.63 0.77
2 A' 3104 2994 6.25 127.81 0.10 0.18
3 A' 3041 2934 18.35 213.18 0.05 0.10
4 A' 1467 1415 2.15 3.78 0.75 0.86
5 A' 1454 1402 1.25 4.17 0.72 0.84
6 A' 1384 1335 6.60 2.17 0.56 0.72
7 A' 1257 1212 49.21 5.79 0.33 0.49
8 A' 1084 1045 0.28 3.80 0.17 0.28
9 A' 973 939 17.59 3.41 0.58 0.73
10 A' 570 550 16.16 19.87 0.18 0.31
11 A' 287 277 2.20 2.72 0.29 0.45
12 A" 3178 3065 7.75 27.49 0.75 0.86
13 A" 3144 3032 6.65 73.63 0.75 0.86
14 A" 1451 1399 10.08 5.47 0.75 0.86
15 A" 1248 1204 0.34 0.81 0.75 0.86
16 A" 1023 987 0.03 1.25 0.75 0.86
17 A" 765 738 3.84 0.01 0.75 0.86
18 A" 257 248 0.01 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14404.9 cm-1
Scaled (by 0.9646) Zero Point Vibrational Energy (zpe) 13894.9 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/aug-cc-pVDZ
ABC
1.00662 0.12509 0.11618

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -2.036 0.000
C2 0.597 -1.078 0.000
Br3 0.000 0.797 0.000
H4 1.221 -1.179 0.894
H5 1.221 -1.179 -0.894
H6 -0.191 -3.068 0.000
H7 -1.199 -1.900 0.891
H8 -1.199 -1.900 -0.891

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51212.89022.17982.17981.10111.09711.0971
C21.51211.96771.09481.09482.14112.16712.1671
Br32.89021.96772.48922.48923.87033.08343.0834
H42.17981.09482.48921.78742.52242.52553.0923
H52.17981.09482.48921.78742.52243.09232.5255
H61.10112.14113.87032.52242.52241.78161.7816
H71.09712.16713.08342.52553.09231.78161.7813
H81.09712.16713.08343.09232.52551.78161.7813

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 111.644 C1 C2 H4 112.483
C1 C2 H5 112.483 C2 C1 H6 109.019
C2 C1 H7 111.313 C2 C1 H8 111.313
Br3 C2 H4 105.150 Br3 C2 H5 105.150
H4 C2 H5 109.432 H6 C1 H7 108.278
H6 C1 H8 108.278 H7 C1 H8 108.545
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.518      
2 C -0.082      
3 Br 0.151      
4 H -0.121      
5 H -0.121      
6 H -0.118      
7 H -0.114      
8 H -0.114      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.468 -2.204 0.000 2.253
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.951 -0.988 0.000
y -0.988 -30.039 0.000
z 0.000 0.000 -32.250
Traceless
 xyz
x -0.806 -0.988 0.000
y -0.988 2.061 0.000
z 0.000 0.000 -1.255
Polar
3z2-r2-2.509
x2-y2-1.911
xy-0.988
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.562 -0.062 0.000
y -0.062 9.103 0.000
z 0.000 0.000 6.156


<r2> (average value of r2) Å2
<r2> 106.301
(<r2>)1/2 10.310