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

using model chemistry: PBE1PBE/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/daug-cc-pVDZ
 hartrees
Energy at 0K-2652.966994
Energy at 298.15K 
HF Energy-2652.966994
Nuclear repulsion energy163.951396
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 PBE1PBE/daug-cc-pVDZ
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' 3139 3139 17.95 76.16 0.64 0.78
2 A' 3114 3114 6.87 128.14 0.09 0.17
3 A' 3052 3052 17.35 214.71 0.05 0.09
4 A' 1469 1469 2.40 3.50 0.75 0.86
5 A' 1453 1453 1.23 4.47 0.72 0.84
6 A' 1383 1383 7.81 2.33 0.57 0.73
7 A' 1259 1259 47.18 6.08 0.27 0.43
8 A' 1092 1092 0.26 4.07 0.16 0.27
9 A' 977 977 16.77 3.30 0.53 0.69
10 A' 582 582 15.41 19.73 0.17 0.29
11 A' 289 289 2.03 2.61 0.26 0.41
12 A" 3189 3189 7.24 26.88 0.75 0.86
13 A" 3156 3156 6.17 74.59 0.75 0.86
14 A" 1453 1453 10.61 5.56 0.75 0.86
15 A" 1250 1250 0.33 0.83 0.75 0.86
16 A" 1027 1027 0.03 1.23 0.75 0.86
17 A" 765 765 3.93 0.01 0.75 0.86
18 A" 259 259 0.01 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14454.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14454.4 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 PBE1PBE/daug-cc-pVDZ
ABC
1.00872 0.12616 0.11713

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.572 -2.027 0.000
C2 0.596 -1.071 0.000
Br3 0.000 0.794 0.000
H4 1.221 -1.175 0.893
H5 1.221 -1.175 -0.893
H6 -0.193 -3.060 0.000
H7 -1.198 -1.890 0.890
H8 -1.198 -1.890 -0.890

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.50972.87842.17662.17661.10021.09651.0965
C21.50971.95801.09441.09442.13952.16342.1634
Br32.87841.95802.48282.48283.85853.07023.0702
H42.17661.09442.48281.78542.51942.52193.0883
H52.17661.09442.48281.78542.51943.08832.5219
H61.10022.13953.85852.51942.51941.78101.7810
H71.09652.16343.07022.52193.08831.78101.7797
H81.09652.16343.07023.08832.52191.78101.7797

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 111.552 C1 C2 H4 112.428
C1 C2 H5 112.428 C2 C1 H6 109.111
C2 C1 H7 111.230 C2 C1 H8 111.230
Br3 C2 H4 105.325 Br3 C2 H5 105.325
H4 C2 H5 109.310 H6 C1 H7 108.340
H6 C1 H8 108.340 H7 C1 H8 108.502
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.666      
2 C 0.226      
3 Br 0.262      
4 H -0.326      
5 H -0.326      
6 H -0.293      
7 H -0.104      
8 H -0.104      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.465 -2.168 0.000 2.218
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.059 -1.004 0.000
y -1.004 -30.118 0.000
z 0.000 0.000 -32.340
Traceless
 xyz
x -0.830 -1.004 0.000
y -1.004 2.082 0.000
z 0.000 0.000 -1.251
Polar
3z2-r2-2.503
x2-y2-1.941
xy-1.004
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.759 -0.035 0.000
y -0.035 9.119 0.000
z 0.000 0.000 6.358


<r2> (average value of r2) Å2
<r2> 105.701
(<r2>)1/2 10.281