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

using model chemistry: MP2/6-311+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 MP2/6-311+G(3df,2p)
 hartrees
Energy at 0K-2651.569142
Energy at 298.15K 
HF Energy-2651.052998
Nuclear repulsion energy164.926187
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 MP2/6-311+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' 3163 2984 12.59 68.96 0.69 0.82
2 A' 3125 2948 8.32 107.26 0.08 0.15
3 A' 3075 2901 14.45 170.81 0.04 0.07
4 A' 1519 1433 2.38 3.11 0.75 0.86
5 A' 1505 1420 1.70 5.82 0.65 0.79
6 A' 1422 1341 4.97 0.54 0.74 0.85
7 A' 1298 1224 42.87 5.36 0.29 0.45
8 A' 1097 1035 0.06 4.65 0.12 0.22
9 A' 995 938 12.74 3.22 0.68 0.81
10 A' 611 576 10.28 18.73 0.18 0.30
11 A' 295 278 1.25 2.22 0.28 0.44
12 A" 3200 3019 6.62 13.19 0.75 0.86
13 A" 3175 2996 3.01 77.24 0.75 0.86
14 A" 1507 1422 10.04 5.16 0.75 0.86
15 A" 1279 1207 0.25 0.99 0.75 0.86
16 A" 1055 995 0.14 1.18 0.75 0.86
17 A" 780 736 3.25 0.01 0.75 0.86
18 A" 272 256 0.01 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14685.7 cm-1
Scaled (by 0.9434) Zero Point Vibrational Energy (zpe) 13854.5 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 MP2/6-311+G(3df,2p)
ABC
1.01039 0.12792 0.11857

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.574 -2.015 0.000
C2 0.599 -1.061 0.000
Br3 0.000 0.788 0.000
H4 1.219 -1.171 0.885
H5 1.219 -1.171 -0.885
H6 -0.205 -3.042 0.000
H7 -1.193 -1.871 0.882
H8 -1.193 -1.871 -0.882

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51212.86152.17002.17001.09091.08771.0877
C21.51211.94371.08621.08622.13842.15542.1554
Br32.86151.94372.47132.47133.83583.04473.0447
H42.17001.08622.47131.77082.51252.51093.0708
H52.17001.08622.47131.77082.51253.07082.5109
H61.09092.13843.83582.51252.51251.76831.7683
H71.08772.15543.04472.51093.07081.76831.7649
H81.08772.15543.04473.07082.51091.76831.7649

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 111.179 C1 C2 H4 112.230
C1 C2 H5 112.230 C2 C1 H6 109.407
C2 C1 H7 110.952 C2 C1 H8 110.952
Br3 C2 H4 105.800 Br3 C2 H5 105.800
H4 C2 H5 109.208 H6 C1 H7 108.511
H6 C1 H8 108.511 H7 C1 H8 108.439
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability