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

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-2650.992323
Energy at 298.15K 
HF Energy-2650.992323
Nuclear repulsion energy164.634135
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 TPSSh/6-31G(2df,p)
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' 3111 3002 25.65 65.48 0.62 0.77
2 A' 3090 2982 5.75 110.05 0.16 0.27
3 A' 3033 2927 22.45 147.75 0.08 0.15
4 A' 1511 1458 1.24 8.74 0.74 0.85
5 A' 1494 1442 0.57 10.76 0.75 0.85
6 A' 1415 1366 2.24 4.58 0.65 0.79
7 A' 1274 1230 49.24 2.64 0.41 0.58
8 A' 1077 1039 0.09 3.94 0.30 0.46
9 A' 973 939 13.36 2.92 0.74 0.85
10 A' 581 561 14.02 16.38 0.20 0.34
11 A' 281 271 1.92 2.02 0.32 0.49
12 A" 3158 3048 14.29 20.44 0.75 0.86
13 A" 3126 3017 5.68 87.23 0.75 0.86
14 A" 1497 1444 6.79 15.28 0.75 0.86
15 A" 1268 1223 0.22 3.65 0.75 0.86
16 A" 1034 998 0.07 3.53 0.75 0.86
17 A" 767 740 3.23 0.07 0.75 0.86
18 A" 259 250 0.03 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14474.0 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 13967.4 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 TPSSh/6-31G(2df,p)
ABC
1.00100 0.12765 0.11826

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.576 -2.018 0.000
C2 0.602 -1.060 0.000
Br3 0.000 0.789 0.000
H4 1.225 -1.169 0.888
H5 1.225 -1.169 -0.888
H6 -0.206 -3.051 0.000
H7 -1.199 -1.873 0.887
H8 -1.199 -1.873 -0.887

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51892.86532.18042.18041.09691.09311.0931
C21.51891.94431.09021.09022.14862.16622.1662
Br32.86531.94432.47412.47413.84493.05113.0511
H42.18041.09022.47411.77682.52552.52403.0856
H52.18041.09022.47411.77682.52553.08562.5240
H61.09692.14863.84492.52552.52551.77721.7772
H71.09312.16623.05112.52403.08561.77721.7732
H81.09312.16623.05113.08562.52401.77721.7732

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 111.060 C1 C2 H4 112.333
C1 C2 H5 112.333 C2 C1 H6 109.387
C2 C1 H7 111.006 C2 C1 H8 111.006
Br3 C2 H4 105.770 Br3 C2 H5 105.770
H4 C2 H5 109.165 H6 C1 H7 108.484
H6 C1 H8 108.484 H7 C1 H8 108.402
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.415      
2 C -0.335      
3 Br -0.064      
4 H 0.176      
5 H 0.176      
6 H 0.143      
7 H 0.160      
8 H 0.160      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.451 -2.056 0.000 2.105
CHELPG        
AIM        
ESP        


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 5.663 -0.120 0.000
y -0.120 7.979 0.000
z 0.000 0.000 5.364


<r2> (average value of r2) Å2
<r2> 104.500
(<r2>)1/2 10.223