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

using model chemistry: CCSD/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-2651.608569
Energy at 298.15K 
HF Energy-2651.053008
Nuclear repulsion energy164.318102
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/6-311+G(3df,2p)
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' 3133 2955 22.59      
2 A' 3115 2938 4.66      
3 A' 3057 2883 17.80      
4 A' 1524 1437 2.02      
5 A' 1514 1428 1.45      
6 A' 1439 1357 3.80      
7 A' 1309 1234 47.01      
8 A' 1099 1037 0.11      
9 A' 997 940 11.27      
10 A' 599 565 12.25      
11 A' 294 277 1.31      
12 A" 3181 3000 7.99      
13 A" 3146 2967 7.16      
14 A" 1512 1426 8.76      
15 A" 1286 1213 0.18      
16 A" 1059 999 0.14      
17 A" 782 738 2.77      
18 A" 265 250 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 14655.1 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 13821.3 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/6-311+G(3df,2p)
ABC
1.00797 0.12676 0.11756

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.574 -2.025 0.000
C2 0.600 -1.066 0.000
Br3 0.000 0.792 0.000
H4 1.220 -1.175 0.886
H5 1.220 -1.175 -0.886
H6 -0.203 -3.052 0.000
H7 -1.195 -1.882 0.884
H8 -1.195 -1.882 -0.884

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51592.87442.17352.17351.09251.08931.0893
C21.51591.95231.08651.08652.14232.16102.1610
Br32.87441.95232.47812.47813.84933.05943.0594
H42.17351.08652.47811.77172.51612.51623.0761
H52.17351.08652.47811.77172.51613.07612.5162
H61.09252.14233.84932.51612.51611.77031.7703
H71.08932.16103.05942.51623.07611.77031.7673
H81.08932.16103.05943.07612.51621.77031.7673

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 111.326 C1 C2 H4 112.220
C1 C2 H5 112.220 C2 C1 H6 109.354
C2 C1 H7 111.032 C2 C1 H8 111.032
Br3 C2 H4 105.717 Br3 C2 H5 105.717
H4 C2 H5 109.240 H6 C1 H7 108.463
H6 C1 H8 108.463 H7 C1 H8 108.423
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability