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

using model chemistry: CCSD(T)/6-311G*

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)/6-311G*
 hartrees
Energy at 0K-2651.488726
Energy at 298.15K 
HF Energy-2651.033305
Nuclear repulsion energy163.258672
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)/6-311G*
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' 3105 2989        
2 A' 3087 2972        
3 A' 3027 2914        
4 A' 1520 1463        
5 A' 1508 1452        
6 A' 1441 1388        
7 A' 1315 1266        
8 A' 1097 1056        
9 A' 991 954        
10 A' 579 557        
11 A' 292 281        
12 A" 3154 3036        
13 A" 3120 3004        
14 A" 1510 1453        
15 A" 1285 1237        
16 A" 1061 1022        
17 A" 780 751        
18 A" 274 263        

Unscaled Zero Point Vibrational Energy (zpe) 14573.2 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 14028.2 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)/6-311G*
ABC
0.99692 0.12515 0.11608

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.577 -2.036 0.000
C2 0.603 -1.076 0.000
Br3 0.000 0.797 0.000
H4 1.226 -1.189 0.891
H5 1.226 -1.189 -0.891
H6 -0.206 -3.071 0.000
H7 -1.202 -1.892 0.888
H8 -1.202 -1.892 -0.888

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.52142.89112.18222.18221.09931.09561.0956
C21.52141.96771.09301.09302.15282.17092.1709
Br32.89111.96772.49812.49813.87333.07623.0762
H42.18221.09302.49811.78242.52722.52733.0910
H52.18221.09302.49811.78242.52723.09102.5273
H61.09932.15283.87332.52722.52721.78061.7806
H71.09562.17093.07622.52733.09101.78061.7768
H81.09562.17093.07623.09102.52731.78061.7768

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 111.272 C1 C2 H4 112.131
C1 C2 H5 112.131 C2 C1 H6 109.408
C2 C1 H7 111.059 C2 C1 H8 111.059
Br3 C2 H4 105.839 Br3 C2 H5 105.839
H4 C2 H5 109.252 H6 C1 H7 108.436
H6 C1 H8 108.436 H7 C1 H8 108.366
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability