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

using model chemistry: PBEPBEultrafine/cc-pVTZ-PP

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/cc-pVTZ-PP
 hartrees
Energy at 0K-495.988928
Energy at 298.15K 
HF Energy-495.988928
Nuclear repulsion energy126.806052
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/cc-pVTZ-PP
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' 3038 3038 21.95 66.33 0.48 0.65
2 A' 3022 3022 2.49 138.74 0.18 0.30
3 A' 2964 2964 17.78 214.49 0.08 0.14
4 A' 1448 1448 2.57 6.31 0.75 0.86
5 A' 1434 1434 1.16 7.53 0.75 0.86
6 A' 1358 1358 6.02 3.52 0.63 0.78
7 A' 1223 1223 47.81 4.86 0.56 0.72
8 A' 1052 1052 0.31 3.18 0.35 0.52
9 A' 947 947 18.77 3.91 0.65 0.79
10 A' 550 550 13.50 16.76 0.21 0.34
11 A' 274 274 2.14 2.77 0.39 0.56
12 A" 3088 3088 9.72 22.82 0.75 0.86
13 A" 3054 3054 5.45 89.19 0.75 0.86
14 A" 1430 1430 10.14 8.50 0.75 0.86
15 A" 1221 1221 0.40 1.42 0.75 0.86
16 A" 992 992 0.06 3.71 0.75 0.86
17 A" 749 749 4.51 0.10 0.75 0.86
18 A" 249 249 0.00 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14045.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14045.3 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 PBEPBEultrafine/cc-pVTZ-PP
ABC
1.00416 0.12413 0.11532

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/cc-pVTZ-PP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -2.042 0.000
C2 0.598 -1.085 0.000
Br3 0.000 0.801 0.000
H4 1.224 -1.181 0.893
H5 1.224 -1.181 -0.893
H6 -0.197 -3.078 0.000
H7 -1.201 -1.907 0.890
H8 -1.201 -1.907 -0.890

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51272.90012.18352.18351.10181.09731.0973
C21.51271.97851.09461.09462.14562.16882.1688
Br32.90011.97852.49432.49433.88363.09253.0925
H42.18351.09462.49431.78682.53272.53073.0958
H52.18351.09462.49431.78682.53273.09582.5307
H61.10182.14563.88362.53272.53271.78081.7808
H71.09732.16883.09252.53073.09581.78081.7794
H81.09732.16883.09253.09582.53071.78081.7794

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 111.647 C1 C2 H4 112.767
C1 C2 H5 112.767 C2 C1 H6 109.291
C2 C1 H7 111.401 C2 C1 H8 111.401
Br3 C2 H4 104.835 Br3 C2 H5 104.835
H4 C2 H5 109.410 H6 C1 H7 108.145
H6 C1 H8 108.145 H7 C1 H8 108.348
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVTZ-PP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.279      
2 C -0.182      
3 Br -0.112      
4 H 0.123      
5 H 0.123      
6 H 0.100      
7 H 0.113      
8 H 0.113      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.422 -1.994 0.000 2.038
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.778 -0.952 0.000
y -0.952 -29.791 0.000
z 0.000 0.000 -32.034
Traceless
 xyz
x -0.866 -0.952 0.000
y -0.952 2.115 0.000
z 0.000 0.000 -1.250
Polar
3z2-r2-2.499
x2-y2-1.987
xy-0.952
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.970 -0.078 0.000
y -0.078 8.809 0.000
z 0.000 0.000 5.524


<r2> (average value of r2) Å2
<r2> 100.354
(<r2>)1/2 10.018