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

using model chemistry: HF/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 HF/6-311G*
 hartrees
Energy at 0K-2651.034029
Energy at 298.15K 
HF Energy-2651.034029
Nuclear repulsion energy163.869287
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 HF/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' 3277 2963 42.77 87.82 0.05 0.10
2 A' 3249 2938 13.26 108.22 0.59 0.74
3 A' 3185 2881 33.98 148.13 0.09 0.16
4 A' 1631 1475 1.98 6.81 0.75 0.86
5 A' 1625 1470 1.67 12.77 0.69 0.81
6 A' 1551 1402 3.01 2.65 0.74 0.85
7 A' 1413 1278 88.40 4.50 0.61 0.75
8 A' 1166 1055 0.85 4.67 0.30 0.46
9 A' 1042 943 13.76 6.07 0.73 0.84
10 A' 599 542 32.62 28.40 0.29 0.45
11 A' 307 278 2.49 2.76 0.45 0.62
12 A" 3338 3018 18.54 46.19 0.75 0.86
13 A" 3274 2961 20.81 79.67 0.75 0.86
14 A" 1620 1465 8.12 12.42 0.75 0.86
15 A" 1381 1249 0.65 4.03 0.75 0.86
16 A" 1138 1029 0.73 4.73 0.75 0.86
17 A" 834 754 3.51 0.26 0.75 0.86
18 A" 277 251 0.03 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15453.6 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 13976.2 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 HF/6-311G*
ABC
1.01766 0.12542 0.11646

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.572 -2.036 0.000
C2 0.598 -1.074 0.000
Br3 0.000 0.796 0.000
H4 1.213 -1.176 0.879
H5 1.213 -1.176 -0.879
H6 -0.195 -3.055 0.000
H7 -1.191 -1.904 0.878
H8 -1.191 -1.904 -0.878

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51492.88952.16742.16741.08661.08241.0824
C21.51491.96311.07741.07742.13382.15872.1587
Br32.88951.96312.47632.47633.85603.07893.0789
H42.16741.07742.47631.75762.50662.51153.0650
H52.16741.07742.47631.75762.50663.06502.5115
H61.08662.13383.85602.50662.50661.75771.7577
H71.08242.15873.07892.51153.06501.75771.7561
H81.08242.15873.07893.06502.51151.75771.7561

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 111.713 C1 C2 H4 112.363
C1 C2 H5 112.363 C2 C1 H6 109.102
C2 C1 H7 111.341 C2 C1 H8 111.341
Br3 C2 H4 105.317 Br3 C2 H5 105.317
H4 C2 H5 109.303 H6 C1 H7 108.266
H6 C1 H8 108.266 H7 C1 H8 108.428
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.601      
2 C -0.469      
3 Br -0.118      
4 H 0.257      
5 H 0.257      
6 H 0.216      
7 H 0.230      
8 H 0.230      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.567 -2.410 0.000 2.475
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.203 -1.150 0.000
y -1.150 -30.407 0.000
z 0.000 0.000 -32.507
Traceless
 xyz
x -0.745 -1.150 0.000
y -1.150 1.948 0.000
z 0.000 0.000 -1.203
Polar
3z2-r2-2.405
x2-y2-1.796
xy-1.150
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.648 -0.378 0.000
y -0.378 7.569 0.000
z 0.000 0.000 4.287


<r2> (average value of r2) Å2
<r2> 106.140
(<r2>)1/2 10.302