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

using model chemistry: B2PLYP/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 B2PLYP/6-31+G**
 hartrees
Energy at 0K-2650.372948
Energy at 298.15K 
HF Energy-2650.238063
Nuclear repulsion energy163.154835
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/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' 3158 3007 22.89      
2 A' 3140 2991 5.26      
3 A' 3077 2931 20.15      
4 A' 1525 1452 2.98      
5 A' 1516 1443 1.16      
6 A' 1442 1373 5.60      
7 A' 1312 1250 67.55      
8 A' 1097 1045 0.08      
9 A' 992 944 14.93      
10 A' 566 540 17.87      
11 A' 292 278 2.08      
12 A" 3213 3060 7.96      
13 A" 3177 3025 7.98      
14 A" 1512 1440 10.25      
15 A" 1289 1228 0.40      
16 A" 1061 1010 0.32      
17 A" 790 752 3.44      
18 A" 266 253 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14711.2 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 14010.9 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 B2PLYP/6-31+G**
ABC
1.00971 0.12443 0.11559

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -2.042 0.000
C2 0.598 -1.081 0.000
Br3 0.000 0.800 0.000
H4 1.217 -1.182 0.888
H5 1.217 -1.182 -0.888
H6 -0.192 -3.068 0.000
H7 -1.196 -1.906 0.885
H8 -1.196 -1.906 -0.885

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51582.89932.17622.17621.09421.09051.0905
C21.51581.97311.08761.08762.13902.16402.1640
Br32.89931.97312.48972.48973.87253.08773.0877
H42.17621.08762.48971.77672.51672.51943.0809
H52.17621.08762.48971.77672.51673.08092.5194
H61.09422.13903.87252.51672.51671.77201.7720
H71.09052.16403.08772.51943.08091.77201.7699
H81.09052.16403.08773.08092.51941.77201.7699

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 111.732 C1 C2 H4 112.382
C1 C2 H5 112.382 C2 C1 H6 109.010
C2 C1 H7 111.215 C2 C1 H8 111.215
Br3 C2 H4 105.163 Br3 C2 H5 105.163
H4 C2 H5 109.537 H6 C1 H7 108.412
H6 C1 H8 108.412 H7 C1 H8 108.495
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.390      
2 C -0.218      
3 Br -0.209      
4 H 0.174      
5 H 0.174      
6 H 0.147      
7 H 0.161      
8 H 0.161      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.695 -0.209 0.000
y -0.209 8.191 0.000
z 0.000 0.000 5.419


<r2> (average value of r2) Å2
<r2> 106.833
(<r2>)1/2 10.336