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

using model chemistry: MP2=FULL/6-31G**

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/6-31G**
 hartrees
Energy at 0K-2648.992770
Energy at 298.15K 
HF Energy-2648.547276
Nuclear repulsion energy164.296296
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3233 3021 14.20      
2 A' 3190 2981 10.58      
3 A' 3136 2930 14.48      
4 A' 1561 1459 1.90      
5 A' 1545 1444 0.92      
6 A' 1466 1370 3.86      
7 A' 1332 1244 56.42      
8 A' 1122 1048 0.08      
9 A' 1013 946 10.62      
10 A' 599 559 12.33      
11 A' 296 277 1.78      
12 A" 3272 3058 11.25      
13 A" 3249 3036 3.36      
14 A" 1548 1447 7.30      
15 A" 1314 1228 0.39      
16 A" 1072 1002 0.17      
17 A" 791 739 3.23      
18 A" 281 262 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 15009.6 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 14024.9 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/6-31G**
ABC
1.00586 0.12690 0.11763

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.575 -2.021 0.000
C2 0.602 -1.073 0.000
Br3 0.000 0.792 0.000
H4 1.219 -1.180 0.886
H5 1.219 -1.180 -0.886
H6 -0.215 -3.049 0.000
H7 -1.192 -1.869 0.881
H8 -1.192 -1.869 -0.881

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51152.87072.17072.17071.08971.08641.0864
C21.51151.95931.08491.08492.13872.15152.1515
Br32.87071.95932.48152.48153.84693.04563.0456
H42.17071.08492.48151.77182.51722.50763.0678
H52.17071.08492.48151.77182.51723.06782.5076
H61.08972.13873.84692.51722.51721.76761.7676
H71.08642.15153.04562.50763.06781.76761.7626
H81.08642.15153.04563.06782.50761.76761.7626

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 110.945 C1 C2 H4 112.404
C1 C2 H5 112.404 C2 C1 H6 109.540
C2 C1 H7 110.759 C2 C1 H8 110.759
Br3 C2 H4 105.585 Br3 C2 H5 105.585
H4 C2 H5 109.483 H6 C1 H7 108.646
H6 C1 H8 108.646 H7 C1 H8 108.433
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability