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

using model chemistry: QCISD/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 QCISD/6-311+G(3df,2p)
 hartrees
Energy at 0K-2651.609312
Energy at 298.15K 
HF Energy-2651.052998
Nuclear repulsion energy164.255029
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 QCISD/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' 3130 2985 22.93      
2 A' 3112 2968 4.79      
3 A' 3054 2912 18.10      
4 A' 1523 1453 1.99      
5 A' 1513 1443 1.41      
6 A' 1438 1371 3.76      
7 A' 1307 1246 47.30      
8 A' 1098 1047 0.10      
9 A' 996 950 11.38      
10 A' 596 569 12.63      
11 A' 293 280 1.33      
12 A" 3178 3031 8.26      
13 A" 3143 2997 7.26      
14 A" 1512 1442 8.70      
15 A" 1285 1225 0.18      
16 A" 1058 1009 0.14      
17 A" 781 745 2.74      
18 A" 265 253 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 14640.3 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 13962.5 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 QCISD/6-311+G(3df,2p)
ABC
1.00731 0.12667 0.11747

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/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 -1.067 0.000
Br3 0.000 0.792 0.000
H4 1.220 -1.176 0.886
H5 1.220 -1.176 -0.886
H6 -0.203 -3.053 0.000
H7 -1.196 -1.883 0.884
H8 -1.196 -1.883 -0.884

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51612.87542.17412.17411.09271.08961.0896
C21.51611.95351.08671.08672.14252.16142.1614
Br32.87541.95352.47902.47903.85043.06033.0603
H42.17411.08672.47901.77222.51692.51683.0768
H52.17411.08672.47901.77222.51693.07682.5168
H61.09272.14253.85042.51692.51691.77061.7706
H71.08962.16143.06032.51683.07681.77061.7676
H81.08962.16143.06033.07682.51681.77061.7676

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 111.313 C1 C2 H4 112.242
C1 C2 H5 112.242 C2 C1 H6 109.347
C2 C1 H7 111.037 C2 C1 H8 111.037
Br3 C2 H4 105.690 Br3 C2 H5 105.690
H4 C2 H5 109.257 H6 C1 H7 108.461
H6 C1 H8 108.461 H7 C1 H8 108.422
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability