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

using model chemistry: MP2=FULL/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 MP2=FULL/6-311G**
 hartrees
Energy at 0K-2651.907138
Energy at 298.15K 
HF Energy-2651.041057
Nuclear repulsion energy164.566384
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=FULL/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' 3175 3012 17.20 76.54 0.69 0.82
2 A' 3141 2980 11.57 109.83 0.13 0.23
3 A' 3086 2927 16.11 144.73 0.04 0.08
4 A' 1517 1439 2.22 7.04 0.75 0.86
5 A' 1503 1426 1.01 11.31 0.71 0.83
6 A' 1433 1360 5.22 2.88 0.75 0.86
7 A' 1323 1255 53.58 2.67 0.68 0.81
8 A' 1108 1051 0.03 4.07 0.36 0.53
9 A' 1003 952 11.28 4.95 0.74 0.85
10 A' 610 579 10.66 16.98 0.26 0.41
11 A' 298 283 1.37 1.89 0.51 0.68
12 A" 3215 3049 13.07 17.14 0.75 0.86
13 A" 3189 3025 3.88 93.64 0.75 0.86
14 A" 1506 1428 8.70 10.59 0.75 0.86
15 A" 1291 1225 0.79 3.51 0.75 0.86
16 A" 1067 1012 0.50 5.13 0.75 0.86
17 A" 789 748 3.74 0.17 0.75 0.86
18 A" 288 273 0.00 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14770.7 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 14011.5 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=FULL/6-311G**
ABC
1.00801 0.12729 0.11803

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.574 -2.021 0.000
C2 0.599 -1.061 0.000
Br3 0.000 0.790 0.000
H4 1.219 -1.177 0.888
H5 1.219 -1.177 -0.888
H6 -0.201 -3.051 0.000
H7 -1.196 -1.876 0.885
H8 -1.196 -1.876 -0.885

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51562.86892.17172.17171.09491.09161.0916
C21.51561.94601.08951.08952.14442.16102.1610
Br32.86891.94602.47932.47933.84593.05313.0531
H42.17171.08952.47931.77662.51342.51433.0768
H52.17171.08952.47931.77662.51343.07682.5143
H61.09492.14443.84592.51342.51341.77531.7753
H71.09162.16103.05312.51433.07681.77531.7704
H81.09162.16103.05313.07682.51431.77531.7704

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 111.341 C1 C2 H4 111.906
C1 C2 H5 111.906 C2 C1 H6 109.404
C2 C1 H7 110.922 C2 C1 H8 110.922
Br3 C2 H4 106.061 Br3 C2 H5 106.061
H4 C2 H5 109.237 H6 C1 H7 108.574
H6 C1 H8 108.574 H7 C1 H8 108.380
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability