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

using model chemistry: QCISD(T)=FULL/6-31+G**

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(T)=FULL/6-31+G**
 hartrees
Energy at 0K-2649.060792
Energy at 298.15K 
HF Energy-2648.562638
Nuclear repulsion energy163.267247
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(T)=FULL/6-31+G**
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' 3173 3173        
2 A' 3149 3149        
3 A' 3087 3087        
4 A' 1535 1535        
5 A' 1526 1526        
6 A' 1459 1459        
7 A' 1328 1328        
8 A' 1106 1106        
9 A' 1001 1001        
10 A' 574 574        
11 A' 294 294        
12 A" 3223 3223        
13 A" 3190 3190        
14 A" 1525 1525        
15 A" 1297 1297        
16 A" 1066 1066        
17 A" 790 790        
18 A" 271 271        

Unscaled Zero Point Vibrational Energy (zpe) 14796.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14796.3 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 QCISD(T)=FULL/6-31+G**
ABC
1.00792 0.12470 0.11580

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.574 -2.041 0.000
C2 0.599 -1.079 0.000
Br3 0.000 0.799 0.000
H4 1.218 -1.186 0.888
H5 1.218 -1.186 -0.888
H6 -0.196 -3.066 0.000
H7 -1.195 -1.900 0.885
H8 -1.195 -1.900 -0.885

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51762.89682.17522.17521.09311.08971.0897
C21.51761.97081.08731.08732.14052.16272.1627
Br32.89681.97082.49202.49203.86963.08103.0810
H42.17521.08732.49201.77562.51442.51653.0780
H52.17521.08732.49201.77562.51443.07802.5165
H61.09312.14053.86962.51442.51441.77221.7722
H71.08972.16273.08102.51653.07801.77221.7691
H81.08972.16273.08103.07802.51651.77221.7691

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 111.618 C1 C2 H4 112.182
C1 C2 H5 112.182 C2 C1 H6 109.066
C2 C1 H7 111.021 C2 C1 H8 111.021
Br3 C2 H4 105.480 Br3 C2 H5 105.480
H4 C2 H5 109.478 H6 C1 H7 108.567
H6 C1 H8 108.567 H7 C1 H8 108.534
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability