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=FULL/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=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-2652.058813
Energy at 298.15K 
HF Energy-2651.053044
Nuclear repulsion energy164.857759
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=FULL/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' 3145 3145 22.40      
2 A' 3127 3127 4.50      
3 A' 3069 3069 17.48      
4 A' 1528 1528 2.15      
5 A' 1518 1518 1.58      
6 A' 1443 1443 4.30      
7 A' 1314 1314 45.52      
8 A' 1105 1105 0.10      
9 A' 1003 1003 11.40      
10 A' 606 606 11.94      
11 A' 295 295 1.27      
12 A" 3193 3193 7.77      
13 A" 3157 3157 6.92      
14 A" 1516 1516 9.05      
15 A" 1290 1290 0.19      
16 A" 1064 1064 0.13      
17 A" 785 785 2.87      
18 A" 269 269 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 14712.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14712.2 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=FULL/6-311+G(3df,2p)
ABC
1.01267 0.12768 0.11839

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -2.017 0.000
C2 0.598 -1.061 0.000
Br3 0.000 0.789 0.000
H4 1.217 -1.171 0.884
H5 1.217 -1.171 -0.884
H6 -0.204 -3.044 0.000
H7 -1.193 -1.875 0.882
H8 -1.193 -1.875 -0.882

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51172.86412.16832.16831.09081.08771.0877
C21.51171.94471.08491.08492.13852.15602.1560
Br32.86411.94472.47092.47093.83823.04903.0490
H42.16831.08492.47091.76852.51152.51073.0698
H52.16831.08492.47091.76852.51153.06982.5107
H61.09082.13853.83822.51152.51151.76731.7673
H71.08772.15603.04902.51073.06981.76731.7643
H81.08772.15603.04903.06982.51071.76731.7643

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 111.304 C1 C2 H4 112.207
C1 C2 H5 112.207 C2 C1 H6 109.448
C2 C1 H7 111.029 C2 C1 H8 111.029
Br3 C2 H4 105.768 Br3 C2 H5 105.768
H4 C2 H5 109.193 H6 C1 H7 108.434
H6 C1 H8 108.434 H7 C1 H8 108.390
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability