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

using model chemistry: CISD/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 CISD/6-311G*
 hartrees
Energy at 0K-2651.423696
Energy at 298.15K 
HF Energy-2651.033849
Nuclear repulsion energy164.157895
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 CISD/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' 3194 2955 34.48      
2 A' 3181 2943 2.53      
3 A' 3116 2883 20.91      
4 A' 1563 1446 3.31      
5 A' 1555 1439 1.75      
6 A' 1485 1374 6.72      
7 A' 1360 1259 60.43      
8 A' 1129 1044 0.47      
9 A' 1020 944 12.54      
10 A' 605 560 16.20      
11 A' 302 279 1.63      
12 A" 3248 3006 14.02      
13 A" 3208 2968 10.20      
14 A" 1553 1437 10.18      
15 A" 1325 1226 0.88      
16 A" 1097 1015 0.58      
17 A" 803 743 4.52      
18 A" 277 256 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 15010.5 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 13889.2 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 CISD/6-311G*
ABC
1.01171 0.12629 0.11718

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -2.029 0.000
C2 0.598 -1.067 0.000
Br3 0.000 0.793 0.000
H4 1.218 -1.179 0.884
H5 1.218 -1.179 -0.884
H6 -0.199 -3.055 0.000
H7 -1.195 -1.891 0.882
H8 -1.195 -1.891 -0.882

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51592.87992.17072.17071.09181.08841.0884
C21.51591.95411.08521.08522.14192.16202.1620
Br32.87991.95412.48062.48063.85333.06803.0680
H42.17071.08522.48061.76792.51172.51603.0741
H52.17071.08522.48061.76792.51173.07412.5160
H61.09182.14193.85332.51172.51171.76791.7679
H71.08842.16203.06802.51603.07411.76791.7649
H81.08842.16203.06803.07412.51601.76791.7649

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 111.564 C1 C2 H4 112.073
C1 C2 H5 112.073 C2 C1 H6 109.363
C2 C1 H7 111.170 C2 C1 H8 111.170
Br3 C2 H4 105.836 Br3 C2 H5 105.836
H4 C2 H5 109.084 H6 C1 H7 108.357
H6 C1 H8 108.357 H7 C1 H8 108.337
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability