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

using model chemistry: CISD/daug-cc-pVDZ

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/daug-cc-pVDZ
 hartrees
Energy at 0K-2651.475194
Energy at 298.15K 
HF Energy-2651.048337
Nuclear repulsion energy163.902906
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/daug-cc-pVDZ
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' 3193 3193 29.49      
2 A' 3179 3179 3.26      
3 A' 3111 3111 20.22      
4 A' 1526 1526 1.46      
5 A' 1513 1513 0.96      
6 A' 1446 1446 4.09      
7 A' 1324 1324 54.46      
8 A' 1117 1117 0.03      
9 A' 1010 1010 11.89      
10 A' 603 603 16.37      
11 A' 299 299 1.53      
12 A" 3250 3250 8.46      
13 A" 3207 3207 10.18      
14 A" 1517 1517 8.27      
15 A" 1298 1298 0.17      
16 A" 1072 1072 0.15      
17 A" 789 789 2.52      
18 A" 267 267 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 14859.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14859.6 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/daug-cc-pVDZ
ABC
1.00124 0.12622 0.11706

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.576 -2.029 0.000
C2 0.602 -1.068 0.000
Br3 0.000 0.793 0.000
H4 1.223 -1.177 0.891
H5 1.223 -1.177 -0.891
H6 -0.200 -3.061 0.000
H7 -1.199 -1.885 0.889
H8 -1.199 -1.885 -0.889

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51942.88032.18072.18071.09821.09501.0950
C21.51941.95661.09171.09172.14752.16802.1680
Br32.88031.95662.48392.48393.85933.06663.0666
H42.18071.09172.48391.78262.52372.52363.0882
H52.18071.09172.48391.78262.52373.08822.5236
H61.09822.14753.85932.52372.52371.78031.7803
H71.09502.16803.06662.52363.08821.78031.7774
H81.09502.16803.06663.08822.52361.78031.7774

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 111.295 C1 C2 H4 112.230
C1 C2 H5 112.230 C2 C1 H6 109.193
C2 C1 H7 111.006 C2 C1 H8 111.006
Br3 C2 H4 105.610 Br3 C2 H5 105.610
H4 C2 H5 109.457 H6 C1 H7 108.533
H6 C1 H8 108.533 H7 C1 H8 108.504
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability