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

using model chemistry: CISD/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-2651.672324
Energy at 298.15K 
HF Energy-2651.098058
Nuclear repulsion energy165.458009
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/Def2TZVPP
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' 3220 3220 28.18      
2 A' 3208 3208 0.38      
3 A' 3142 3142 17.99      
4 A' 1559 1559 1.99      
5 A' 1550 1550 1.37      
6 A' 1479 1479 4.01      
7 A' 1350 1350 52.20      
8 A' 1129 1129 0.15      
9 A' 1023 1023 11.83      
10 A' 622 622 14.82      
11 A' 301 301 1.41      
12 A" 3277 3277 7.42      
13 A" 3232 3232 8.53      
14 A" 1548 1548 8.80      
15 A" 1325 1325 0.27      
16 A" 1090 1090 0.19      
17 A" 801 801 2.97      
18 A" 270 270 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 15062.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15062.4 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/Def2TZVPP
ABC
1.02321 0.12841 0.11910

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.570 -2.014 0.000
C2 0.596 -1.056 0.000
Br3 0.000 0.786 0.000
H4 1.211 -1.164 0.879
H5 1.211 -1.164 -0.879
H6 -0.199 -3.033 0.000
H7 -1.187 -1.873 0.877
H8 -1.187 -1.873 -0.877

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.50852.85752.15972.15971.08501.08191.0819
C21.50851.93661.07791.07792.13072.14862.1486
Br32.85751.93662.45842.45843.82483.04213.0421
H42.15971.07792.45841.75732.50032.50053.0556
H52.15971.07792.45841.75732.50033.05562.5005
H61.08502.13073.82482.50032.50031.75831.7583
H71.08192.14863.04212.50053.05561.75831.7549
H81.08192.14863.04213.05562.50051.75831.7549

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 111.482 C1 C2 H4 112.160
C1 C2 H5 112.160 C2 C1 H6 109.394
C2 C1 H7 111.012 C2 C1 H8 111.012
Br3 C2 H4 105.725 Br3 C2 H5 105.725
H4 C2 H5 109.195 H6 C1 H7 108.476
H6 C1 H8 108.476 H7 C1 H8 108.397
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability