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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-2651.869253
Energy at 298.15K 
HF Energy-2651.033647
Nuclear repulsion energy164.436619
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
(Å4/u)
Dep P Dep U
1 A' 3174 3007 16.96      
2 A' 3141 2975 11.65      
3 A' 3086 2923 16.50      
4 A' 1539 1458 4.06      
5 A' 1525 1444 2.03      
6 A' 1452 1376 9.29      
7 A' 1335 1264 51.71      
8 A' 1113 1054 0.29      
9 A' 1006 953 13.57      
10 A' 607 575 11.42      
11 A' 299 283 1.53      
12 A" 3215 3045 12.66      
13 A" 3190 3021 4.05      
14 A" 1528 1447 11.77      
15 A" 1302 1233 1.07      
16 A" 1079 1022 0.56      
17 A" 793 751 5.31      
18 A" 283 268 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 14833.3 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 14048.7 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
1.00775 0.12705 0.11782

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 -2.022 0.000
C2 0.600 -1.064 0.000
Br3 0.000 0.791 0.000
H4 1.220 -1.179 0.887
H5 1.220 -1.179 -0.887
H6 -0.204 -3.051 0.000
H7 -1.196 -1.879 0.884
H8 -1.196 -1.879 -0.884

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51482.87072.17162.17161.09411.09061.0906
C21.51481.94931.08891.08892.14392.16142.1614
Br32.87071.94932.48152.48153.84783.05663.0566
H42.17161.08892.48151.77432.51412.51593.0769
H52.17161.08892.48151.77432.51413.07692.5159
H61.09412.14393.84782.51412.51411.77211.7721
H71.09062.16143.05662.51593.07691.77211.7683
H81.09062.16143.05663.07692.51591.77211.7683

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 111.314 C1 C2 H4 111.998
C1 C2 H5 111.998 C2 C1 H6 109.465
C2 C1 H7 111.065 C2 C1 H8 111.065
Br3 C2 H4 106.032 Br3 C2 H5 106.032
H4 C2 H5 109.124 H6 C1 H7 108.416
H6 C1 H8 108.416 H7 C1 H8 108.333
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability