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

using model chemistry: CCSD(T)/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(T)/6-311+G(3df,2p)
 hartrees
Energy at 0K-2651.630386
Energy at 298.15K 
HF Energy-2651.052892
Nuclear repulsion energy163.941638
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(T)/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' 3115 3074        
2 A' 3094 3053        
3 A' 3037 2997        
4 A' 1511 1491        
5 A' 1498 1478        
6 A' 1421 1402        
7 A' 1289 1272        
8 A' 1087 1073        
9 A' 985 972        
10 A' 586 579        
11 A' 289 285        
12 A" 3161 3120        
13 A" 3129 3088        
14 A" 1499 1480        
15 A" 1271 1254        
16 A" 1045 1031        
17 A" 772 762        
18 A" 264 261        

Unscaled Zero Point Vibrational Energy (zpe) 14525.7 cm-1
Scaled (by 0.9869) Zero Point Vibrational Energy (zpe) 14335.4 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 CCSD(T)/6-311+G(3df,2p)
ABC
1.00223 0.12627 0.11707

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.576 -2.027 0.000
C2 0.602 -1.071 0.000
Br3 0.000 0.793 0.000
H4 1.222 -1.180 0.888
H5 1.222 -1.180 -0.888
H6 -0.208 -3.058 0.000
H7 -1.197 -1.881 0.885
H8 -1.197 -1.881 -0.885

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51782.87912.17722.17721.09431.09081.0908
C21.51781.95931.08831.08832.14602.16282.1628
Br32.87911.95932.48512.48513.85713.06123.0612
H42.17721.08832.48511.77622.52212.51853.0801
H52.17721.08832.48511.77622.52213.08012.5185
H61.09432.14603.85712.52212.52211.77341.7734
H71.09082.16283.06122.51853.08011.77341.7699
H81.09082.16283.06123.08012.51851.77341.7699

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 111.157 C1 C2 H4 112.270
C1 C2 H5 112.270 C2 C1 H6 109.410
C2 C1 H7 110.949 C2 C1 H8 110.949
Br3 C2 H4 105.676 Br3 C2 H5 105.676
H4 C2 H5 109.384 H6 C1 H7 108.508
H6 C1 H8 108.508 H7 C1 H8 108.448
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability