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

using model chemistry: CCSD=FULL/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-2649.352756
Energy at 298.15K 
HF Energy-2648.728817
Nuclear repulsion energy166.393948
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 CCSD=FULL/6-31G(2df,p)
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' 3181 2995 16.09      
2 A' 3152 2968 7.71      
3 A' 3101 2920 14.48      
4 A' 1543 1453 1.64      
5 A' 1532 1443 1.39      
6 A' 1454 1369 4.03      
7 A' 1326 1248 39.65      
8 A' 1112 1048 0.29      
9 A' 1014 955 9.42      
10 A' 633 596 8.95      
11 A' 305 287 1.06      
12 A" 3218 3030 9.70      
13 A" 3194 3007 2.74      
14 A" 1535 1445 7.52      
15 A" 1308 1231 0.31      
16 A" 1075 1013 0.06      
17 A" 793 747 3.37      
18 A" 272 256 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 14873.5 cm-1
Scaled (by 0.9416) Zero Point Vibrational Energy (zpe) 14004.9 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 CCSD=FULL/6-31G(2df,p)
ABC
1.00929 0.13081 0.12102

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.574 -1.996 0.000
C2 0.600 -1.038 0.000
Br3 0.000 0.779 0.000
H4 1.222 -1.166 0.882
H5 1.222 -1.166 -0.882
H6 -0.211 -3.026 0.000
H7 -1.195 -1.849 0.882
H8 -1.195 -1.849 -0.882

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51562.83332.16592.16591.09171.08901.0890
C21.51561.91301.08661.08662.14732.15852.1585
Br32.83331.91302.46032.46033.81023.01823.0182
H42.16591.08662.46031.76382.50802.51123.0691
H52.16591.08662.46031.76382.50803.06912.5112
H61.09172.14733.81022.50802.50801.76951.7695
H71.08902.15853.01822.51123.06911.76951.7649
H81.08902.15853.01823.06912.51121.76951.7649

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 110.927 C1 C2 H4 111.621
C1 C2 H5 111.621 C2 C1 H6 109.819
C2 C1 H7 110.871 C2 C1 H8 110.871
Br3 C2 H4 106.963 Br3 C2 H5 106.963
H4 C2 H5 108.517 H6 C1 H7 108.470
H6 C1 H8 108.470 H7 C1 H8 108.265
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability