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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-311+G(3df,2p)
 hartrees
Energy at 0K-2652.873969
Energy at 298.15K 
HF Energy-2652.873969
Nuclear repulsion energy162.901575
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 PBEPBEultrafine/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' 3036 3036 19.45 69.39 0.51 0.67
2 A' 3019 3019 2.47 129.33 0.15 0.25
3 A' 2962 2962 17.15 221.28 0.07 0.14
4 A' 1448 1448 3.00 3.66 0.75 0.85
5 A' 1434 1434 1.48 5.42 0.71 0.83
6 A' 1358 1358 6.20 2.17 0.54 0.70
7 A' 1224 1224 44.96 7.02 0.27 0.42
8 A' 1051 1051 0.36 3.16 0.16 0.28
9 A' 947 947 19.38 3.96 0.50 0.67
10 A' 551 551 14.13 18.62 0.17 0.29
11 A' 276 276 2.22 2.98 0.27 0.43
12 A" 3086 3086 7.33 23.99 0.75 0.86
13 A" 3051 3051 5.43 80.00 0.75 0.86
14 A" 1431 1431 11.05 5.56 0.75 0.86
15 A" 1220 1220 0.26 0.78 0.75 0.86
16 A" 995 995 0.03 1.45 0.75 0.86
17 A" 749 749 4.03 0.01 0.75 0.86
18 A" 249 249 0.00 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14043.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14043.8 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 PBEPBEultrafine/6-311+G(3df,2p)
ABC
1.00519 0.12421 0.11540

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -2.042 0.000
C2 0.598 -1.084 0.000
Br3 0.000 0.800 0.000
H4 1.223 -1.179 0.893
H5 1.223 -1.179 -0.893
H6 -0.194 -3.077 0.000
H7 -1.201 -1.909 0.890
H8 -1.201 -1.909 -0.890

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51302.89972.18382.18381.10151.09721.0972
C21.51301.97641.09451.09452.14482.16972.1697
Br32.89971.97642.49222.49223.88193.09393.0939
H42.18381.09452.49221.78622.53162.53173.0964
H52.18381.09452.49221.78622.53163.09642.5317
H61.10152.14483.88192.53162.53161.78011.7801
H71.09722.16973.09392.53173.09641.78011.7791
H81.09722.16973.09393.09642.53171.78011.7791

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 111.711 C1 C2 H4 112.764
C1 C2 H5 112.764 C2 C1 H6 109.225
C2 C1 H7 111.460 C2 C1 H8 111.460
Br3 C2 H4 104.826 Br3 C2 H5 104.826
H4 C2 H5 109.369 H6 C1 H7 108.119
H6 C1 H8 108.119 H7 C1 H8 108.343
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.264      
2 C -0.321      
3 Br -0.135      
4 H 0.155      
5 H 0.155      
6 H 0.128      
7 H 0.141      
8 H 0.141      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.439 -2.128 0.000 2.173
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.219 -0.931 0.000
y -0.931 -30.271 0.000
z 0.000 0.000 -32.535
Traceless
 xyz
x -0.816 -0.931 0.000
y -0.931 2.106 0.000
z 0.000 0.000 -1.290
Polar
3z2-r2-2.579
x2-y2-1.948
xy-0.931
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.781 -0.007 0.000
y -0.007 9.373 0.000
z 0.000 0.000 6.385


<r2> (average value of r2) Å2
<r2> 107.007
(<r2>)1/2 10.344