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

using model chemistry: B3LYP/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-2653.410003
Energy at 298.15K 
HF Energy-2653.410003
Nuclear repulsion energy162.914337
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/6-311+G(3df,2p)
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' 3097 2995 23.10 73.02 0.11 0.20
2 A' 3082 2981 0.86 112.52 0.34 0.51
3 A' 3022 2922 18.65 202.69 0.08 0.15
4 A' 1502 1452 2.64 3.26 0.75 0.86
5 A' 1490 1441 1.47 5.77 0.69 0.81
6 A' 1416 1369 4.68 1.44 0.56 0.72
7 A' 1275 1233 51.84 7.83 0.27 0.42
8 A' 1075 1040 0.14 3.63 0.13 0.22
9 A' 971 939 18.18 3.60 0.66 0.79
10 A' 553 535 17.40 21.64 0.19 0.32
11 A' 283 274 2.28 3.27 0.27 0.42
12 A" 3153 3049 6.46 32.07 0.75 0.86
13 A" 3108 3006 8.22 67.74 0.75 0.86
14 A" 1486 1437 10.18 5.60 0.75 0.86
15 A" 1265 1223 0.20 0.86 0.75 0.86
16 A" 1032 998 0.04 1.33 0.75 0.86
17 A" 775 749 3.56 0.00 0.75 0.86
18 A" 254 246 0.01 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14420.0 cm-1
Scaled (by 0.967) Zero Point Vibrational Energy (zpe) 13944.1 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/6-311+G(3df,2p)
ABC
1.01245 0.12389 0.11514

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.572 -2.045 0.000
C2 0.597 -1.087 0.000
Br3 0.000 0.802 0.000
H4 1.216 -1.181 0.886
H5 1.216 -1.181 -0.886
H6 -0.194 -3.072 0.000
H7 -1.195 -1.913 0.883
H8 -1.195 -1.913 -0.883

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51232.90392.17522.17521.09331.08891.0889
C21.51231.98051.08511.08512.13702.16232.1623
Br32.90391.98052.48912.48913.87793.09463.0946
H42.17521.08512.48911.77252.51992.52013.0793
H52.17521.08512.48911.77252.51993.07932.5201
H61.09332.13703.87792.51992.51991.76741.7674
H71.08892.16233.09462.52013.07931.76741.7664
H81.08892.16233.09463.07932.52011.76741.7664

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 111.789 C1 C2 H4 112.707
C1 C2 H5 112.707 C2 C1 H6 109.141
C2 C1 H7 111.425 C2 C1 H8 111.425
Br3 C2 H4 104.771 Br3 C2 H5 104.771
H4 C2 H5 109.517 H6 C1 H7 108.170
H6 C1 H8 108.170 H7 C1 H8 108.401
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.337      
2 C -0.371      
3 Br -0.130      
4 H 0.180      
5 H 0.180      
6 H 0.152      
7 H 0.163      
8 H 0.163      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.464 -2.201 0.000 2.250
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.211 -0.954 0.000
y -0.954 -30.332 0.000
z 0.000 0.000 -32.531
Traceless
 xyz
x -0.780 -0.954 0.000
y -0.954 2.039 0.000
z 0.000 0.000 -1.259
Polar
3z2-r2-2.518
x2-y2-1.880
xy-0.954
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.562 -0.066 0.000
y -0.066 9.141 0.000
z 0.000 0.000 6.198


<r2> (average value of r2) Å2
<r2> 107.101
(<r2>)1/2 10.349