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

using model chemistry: B3LYP/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 B3LYP/6-311G**
 hartrees
Energy at 0K-2653.401187
Energy at 298.15K 
HF Energy-2653.401187
Nuclear repulsion energy162.449789
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/6-311G**
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' 3102 2999 29.94 65.89 0.10 0.19
2 A' 3087 2985 0.72 134.58 0.40 0.57
3 A' 3025 2925 19.93 184.01 0.09 0.16
4 A' 1502 1452 2.90 8.32 0.75 0.86
5 A' 1489 1439 1.39 10.12 0.72 0.84
6 A' 1416 1369 5.17 3.69 0.73 0.84
7 A' 1280 1238 61.95 4.75 0.62 0.77
8 A' 1078 1042 0.15 3.93 0.44 0.61
9 A' 973 940 18.62 4.85 0.73 0.84
10 A' 549 531 18.55 19.95 0.27 0.43
11 A' 283 274 2.55 2.84 0.48 0.65
12 A" 3160 3055 11.80 35.06 0.75 0.86
13 A" 3115 3011 9.65 86.00 0.75 0.86
14 A" 1485 1436 9.78 10.93 0.75 0.86
15 A" 1266 1224 0.74 2.87 0.75 0.86
16 A" 1034 1000 0.25 5.37 0.75 0.86
17 A" 777 751 5.05 0.25 0.75 0.86
18 A" 260 252 0.00 0.07 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14440.2 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 13960.8 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/6-311G**
ABC
1.00865 0.12312 0.11445

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -2.052 0.000
C2 0.598 -1.090 0.000
Br3 0.000 0.804 0.000
H4 1.218 -1.186 0.888
H5 1.218 -1.186 -0.888
H6 -0.194 -3.080 0.000
H7 -1.197 -1.919 0.885
H8 -1.197 -1.919 -0.885

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51542.91272.17892.17891.09581.09131.0913
C21.51541.98681.08761.08762.14112.16672.1667
Br32.91271.98682.49702.49703.88863.10353.1035
H42.17891.08762.49701.77682.52352.52433.0851
H52.17891.08762.49701.77682.52353.08512.5243
H61.09582.14113.88862.52352.52351.77161.7716
H71.09132.16673.10352.52433.08511.77161.7707
H81.09132.16673.10353.08512.52431.77161.7707

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 111.841 C1 C2 H4 112.634
C1 C2 H5 112.634 C2 C1 H6 109.104
C2 C1 H7 111.403 C2 C1 H8 111.403
Br3 C2 H4 104.811 Br3 C2 H5 104.811
H4 C2 H5 109.548 H6 C1 H7 108.192
H6 C1 H8 108.192 H7 C1 H8 108.441
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.287      
2 C -0.309      
3 Br -0.103      
4 H 0.163      
5 H 0.163      
6 H 0.115      
7 H 0.129      
8 H 0.129      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.485 -2.180 0.000 2.233
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.105 -1.005 0.000
y -1.005 -30.113 0.000
z 0.000 0.000 -32.417
Traceless
 xyz
x -0.840 -1.005 0.000
y -1.005 2.148 0.000
z 0.000 0.000 -1.308
Polar
3z2-r2-2.616
x2-y2-1.992
xy-1.005
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.981 -0.256 0.000
y -0.256 8.081 0.000
z 0.000 0.000 4.547


<r2> (average value of r2) Å2
<r2> 107.524
(<r2>)1/2 10.369