return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: CCSD/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/6-311G**
 hartrees
Energy at 0K-2651.513678
Energy at 298.15K 
HF Energy-2651.040988
Nuclear repulsion energy163.704744
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/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3137 3137 29.73      
2 A' 3121 3121 5.71      
3 A' 3060 3060 19.86      
4 A' 1520 1520 1.70      
5 A' 1509 1509 0.87      
6 A' 1443 1443 3.26      
7 A' 1325 1325 58.18      
8 A' 1103 1103 0.04      
9 A' 1000 1000 9.34      
10 A' 594 594 12.42      
11 A' 295 295 1.34      
12 A" 3187 3187 15.00      
13 A" 3151 3151 8.59      
14 A" 1509 1509 7.19      
15 A" 1291 1291 0.61      
16 A" 1065 1065 0.59      
17 A" 787 787 2.97      
18 A" 278 278 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 14686.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14686.9 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/6-311G**
ABC
1.00239 0.12575 0.11665

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.576 -2.033 0.000
C2 0.601 -1.069 0.000
Br3 0.000 0.795 0.000
H4 1.222 -1.185 0.890
H5 1.222 -1.185 -0.890
H6 -0.200 -3.064 0.000
H7 -1.199 -1.889 0.887
H8 -1.199 -1.889 -0.887

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.52182.88632.17782.17781.09721.09391.0939
C21.52181.95841.09071.09072.15072.16852.1685
Br32.88631.95842.49072.49073.86463.07093.0709
H42.17781.09072.49071.77912.51952.52143.0846
H52.17781.09072.49071.77912.51953.08462.5214
H61.09722.15073.86462.51952.51951.77901.7790
H71.09392.16853.07092.52143.08461.77901.7748
H81.09392.16853.07093.08462.52141.77901.7748

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 111.442 C1 C2 H4 111.882
C1 C2 H5 111.882 C2 C1 H6 109.330
C2 C1 H7 110.937 C2 C1 H8 110.937
Br3 C2 H4 106.009 Br3 C2 H5 106.009
H4 C2 H5 109.286 H6 C1 H7 108.570
H6 C1 H8 108.570 H7 C1 H8 108.432
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability