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

using model chemistry: B3LYP/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/aug-cc-pVQZ
 hartrees
Energy at 0K-2653.501715
Energy at 298.15K 
HF Energy-2653.501715
Nuclear repulsion energy163.010066
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/aug-cc-pVQZ
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' 3099 3002 23.86 79.94 0.11 0.20
2 A' 3084 2988 0.74 118.27 0.32 0.49
3 A' 3024 2930 19.05 221.97 0.07 0.14
4 A' 1501 1454 2.43 2.88 0.75 0.86
5 A' 1489 1443 1.21 5.66 0.71 0.83
6 A' 1417 1373 4.45 1.60 0.51 0.68
7 A' 1276 1237 52.42 8.48 0.25 0.40
8 A' 1077 1043 0.12 3.56 0.12 0.21
9 A' 972 942 17.57 3.53 0.67 0.80
10 A' 554 537 17.21 21.89 0.18 0.30
11 A' 283 275 2.26 3.26 0.25 0.41
12 A" 3155 3056 6.65 33.17 0.75 0.86
13 A" 3110 3013 8.33 67.16 0.75 0.86
14 A" 1485 1439 9.71 5.40 0.75 0.86
15 A" 1267 1228 0.20 0.72 0.75 0.86
16 A" 1033 1001 0.04 1.14 0.75 0.86
17 A" 776 752 3.52 0.01 0.75 0.86
18 A" 254 246 0.01 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14427.8 cm-1
Scaled (by 0.9689) Zero Point Vibrational Energy (zpe) 13979.1 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/aug-cc-pVQZ
ABC
1.01415 0.12401 0.11526

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.572 -2.045 0.000
C2 0.597 -1.086 0.000
Br3 0.000 0.801 0.000
H4 1.216 -1.181 0.886
H5 1.216 -1.181 -0.886
H6 -0.194 -3.070 0.000
H7 -1.194 -1.912 0.883
H8 -1.194 -1.912 -0.883

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51182.90282.17362.17361.09271.08831.0883
C21.51181.97881.08451.08452.13612.16122.1612
Br32.90281.97882.48802.48803.87603.09323.0932
H42.17361.08452.48801.77112.51762.51843.0772
H52.17361.08452.48801.77112.51763.07722.5184
H61.09272.13613.87602.51762.51761.76671.7667
H71.08832.16123.09322.51843.07721.76671.7655
H81.08832.16123.09323.07722.51841.76671.7655

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 111.834 C1 C2 H4 112.654
C1 C2 H5 112.654 C2 C1 H6 109.143
C2 C1 H7 111.400 C2 C1 H8 111.400
Br3 C2 H4 104.827 Br3 C2 H5 104.827
H4 C2 H5 109.480 H6 C1 H7 108.194
H6 C1 H8 108.194 H7 C1 H8 108.405
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.780      
2 C -0.543      
3 Br -0.085      
4 H 0.292      
5 H 0.292      
6 H 0.282      
7 H 0.271      
8 H 0.271      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.463 -2.180 0.000 2.229
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.227 -0.959 0.000
y -0.959 -30.367 0.000
z 0.000 0.000 -32.490
Traceless
 xyz
x -0.798 -0.959 0.000
y -0.959 1.991 0.000
z 0.000 0.000 -1.193
Polar
3z2-r2-2.386
x2-y2-1.859
xy-0.959
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.818 -0.040 0.000
y -0.040 9.322 0.000
z 0.000 0.000 6.414


<r2> (average value of r2) Å2
<r2> 107.014
(<r2>)1/2 10.345