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: CID/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 CID/6-311+G(3df,2p)
 hartrees
Energy at 0K-2651.535092
Energy at 298.15K 
HF Energy-2651.053157
Nuclear repulsion energy165.125116
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 CID/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' 3210 2966 23.83      
2 A' 3194 2952 2.95      
3 A' 3132 2894 17.13      
4 A' 1562 1444 2.20      
5 A' 1554 1436 1.74      
6 A' 1478 1366 4.28      
7 A' 1348 1246 50.54      
8 A' 1127 1042 0.23      
9 A' 1022 944 12.16      
10 A' 619 572 14.49      
11 A' 302 279 1.42      
12 A" 3263 3015 6.66      
13 A" 3223 2978 7.75      
14 A" 1551 1433 9.33      
15 A" 1321 1221 0.18      
16 A" 1089 1007 0.11      
17 A" 801 740 2.99      
18 A" 271 250 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 15033.9 cm-1
Scaled (by 0.924) Zero Point Vibrational Energy (zpe) 13891.3 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 CID/6-311+G(3df,2p)
ABC
1.02053 0.12785 0.11860

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.571 -2.018 0.000
C2 0.596 -1.059 0.000
Br3 0.000 0.788 0.000
H4 1.212 -1.168 0.880
H5 1.212 -1.168 -0.880
H6 -0.199 -3.038 0.000
H7 -1.189 -1.878 0.878
H8 -1.189 -1.878 -0.878

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51032.86342.16242.16241.08611.08301.0830
C21.51031.94121.07981.07982.13232.15162.1516
Br32.86341.94122.46412.46413.83133.04903.0490
H42.16241.07982.46411.76002.50212.50403.0598
H52.16241.07982.46411.76002.50213.05982.5040
H61.08612.13233.83132.50212.50211.75971.7597
H71.08302.15163.04902.50403.05981.75971.7570
H81.08302.15163.04903.05982.50401.75971.7570

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 111.504 C1 C2 H4 112.141
C1 C2 H5 112.141 C2 C1 H6 109.336
C2 C1 H7 111.062 C2 C1 H8 111.062
Br3 C2 H4 105.746 Br3 C2 H5 105.746
H4 C2 H5 109.172 H6 C1 H7 108.441
H6 C1 H8 108.441 H7 C1 H8 108.423
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability