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

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-2653.657981
Energy at 298.15K 
HF Energy-2653.657981
Nuclear repulsion energy164.367778
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 B1B95/6-311G*
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' 3141 3011 30.97 70.72 0.51 0.68
2 A' 3124 2995 4.59 128.80 0.22 0.36
3 A' 3063 2937 21.83 162.87 0.07 0.12
4 A' 1517 1455 3.47 8.70 0.75 0.86
5 A' 1502 1440 1.70 10.93 0.73 0.84
6 A' 1424 1365 7.69 4.05 0.75 0.86
7 A' 1298 1244 58.36 3.96 0.68 0.81
8 A' 1097 1052 0.15 3.80 0.44 0.61
9 A' 989 948 17.15 4.85 0.71 0.83
10 A' 582 558 16.15 18.43 0.26 0.42
11 A' 285 273 2.06 2.15 0.51 0.68
12 A" 3193 3061 15.31 27.85 0.75 0.86
13 A" 3156 3026 8.26 93.99 0.75 0.86
14 A" 1503 1441 11.44 11.65 0.75 0.86
15 A" 1279 1226 1.01 3.57 0.75 0.86
16 A" 1050 1007 0.41 5.40 0.75 0.86
17 A" 778 745 5.72 0.23 0.75 0.86
18 A" 268 257 0.00 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14624.8 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 14019.4 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 B1B95/6-311G*
ABC
1.01531 0.12669 0.11758

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.571 -2.023 0.000
C2 0.596 -1.069 0.000
Br3 0.000 0.792 0.000
H4 1.218 -1.175 0.884
H5 1.218 -1.175 -0.884
H6 -0.200 -3.051 0.000
H7 -1.194 -1.887 0.882
H8 -1.194 -1.887 -0.882

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.50722.87272.16782.16781.09261.08891.0889
C21.50721.95461.08611.08612.13582.15672.1567
Br32.87271.95462.47702.47703.84853.06293.0629
H42.16781.08612.47701.76882.51222.51433.0730
H52.16781.08612.47701.76882.51223.07302.5143
H61.09262.13583.84852.51222.51221.76691.7669
H71.08892.15673.06292.51433.07301.76691.7648
H81.08892.15673.06293.07302.51431.76691.7648

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 111.511 C1 C2 H4 112.412
C1 C2 H5 112.412 C2 C1 H6 109.441
C2 C1 H7 111.333 C2 C1 H8 111.333
Br3 C2 H4 105.509 Br3 C2 H5 105.509
H4 C2 H5 109.037 H6 C1 H7 108.182
H6 C1 H8 108.182 H7 C1 H8 108.265
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.642      
2 C -0.534      
3 Br -0.066      
4 H 0.267      
5 H 0.267      
6 H 0.227      
7 H 0.241      
8 H 0.241      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.487 -2.117 0.000 2.172
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.875 -1.065 0.000
y -1.065 -29.950 0.000
z 0.000 0.000 -32.144
Traceless
 xyz
x -0.828 -1.065 0.000
y -1.065 2.059 0.000
z 0.000 0.000 -1.231
Polar
3z2-r2-2.463
x2-y2-1.925
xy-1.065
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.878 -0.254 0.000
y -0.254 7.772 0.000
z 0.000 0.000 4.456


<r2> (average value of r2) Å2
<r2> 105.207
(<r2>)1/2 10.257