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: B2PLYP=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/6-31G**
 hartrees
Energy at 0K-2650.366729
Energy at 298.15K 
HF Energy-2650.221425
Nuclear repulsion energy163.409503
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 B2PLYP=FULL/6-31G**
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' 3169 3169 21.09 64.13 0.65 0.79
2 A' 3148 3148 6.89 107.36 0.17 0.29
3 A' 3087 3087 17.53 137.12 0.06 0.12
4 A' 1538 1538 1.92 11.21 0.73 0.85
5 A' 1524 1524 0.76 12.77 0.75 0.86
6 A' 1447 1447 3.40 5.97 0.68 0.81
7 A' 1305 1305 61.96 2.88 0.60 0.75
8 A' 1101 1101 0.13 4.77 0.44 0.61
9 A' 993 993 13.16 4.10 0.74 0.85
10 A' 572 572 16.16 18.61 0.26 0.42
11 A' 290 290 2.29 2.41 0.39 0.56
12 A" 3222 3222 11.09 28.93 0.75 0.86
13 A" 3188 3188 6.89 78.83 0.75 0.86
14 A" 1523 1523 7.37 18.14 0.75 0.86
15 A" 1292 1292 0.41 5.40 0.75 0.86
16 A" 1051 1051 0.09 5.72 0.75 0.86
17 A" 782 782 3.70 0.34 0.75 0.86
18 A" 267 267 0.02 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14749.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14749.8 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 B2PLYP=FULL/6-31G**
ABC
1.00227 0.12528 0.11621

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.576 -2.033 0.000
C2 0.603 -1.082 0.000
Br3 0.000 0.797 0.000
H4 1.221 -1.183 0.888
H5 1.221 -1.183 -0.888
H6 -0.212 -3.064 0.000
H7 -1.196 -1.886 0.883
H8 -1.196 -1.886 -0.883

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51442.88812.17712.17711.09311.08941.0894
C21.51441.97331.08671.08672.14242.15932.1593
Br32.88811.97332.49012.49013.86653.06753.0675
H42.17711.08672.49011.77552.52532.51753.0781
H52.17711.08672.49011.77552.52533.07812.5175
H61.09312.14243.86652.52532.52531.77121.7712
H71.08942.15933.06752.51753.07811.77121.7668
H81.08942.15933.06753.07812.51751.77121.7668

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 111.120 C1 C2 H4 112.612
C1 C2 H5 112.612 C2 C1 H6 109.436
C2 C1 H7 110.994 C2 C1 H8 110.994
Br3 C2 H4 105.218 Br3 C2 H5 105.218
H4 C2 H5 109.553 H6 C1 H7 108.489
H6 C1 H8 108.489 H7 C1 H8 108.366
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability