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

using model chemistry: PBEPBE/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/Def2TZVPP
 hartrees
Energy at 0K-2652.909438
Energy at 298.15K 
HF Energy-2652.909438
Nuclear repulsion energy162.973756
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 PBEPBE/Def2TZVPP
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' 3042 3005 20.15 67.56 0.53 0.70
2 A' 3024 2987 3.59 137.69 0.15 0.26
3 A' 2967 2931 17.31 216.09 0.07 0.13
4 A' 1448 1430 2.66 5.77 0.74 0.85
5 A' 1434 1417 1.26 7.59 0.75 0.86
6 A' 1359 1343 6.11 2.88 0.67 0.81
7 A' 1225 1211 45.80 5.24 0.52 0.68
8 A' 1053 1041 0.33 3.62 0.29 0.44
9 A' 949 937 18.50 3.77 0.62 0.77
10 A' 552 545 13.56 16.85 0.24 0.38
11 A' 276 272 2.26 2.61 0.39 0.56
12 A" 3091 3054 9.08 22.69 0.75 0.86
13 A" 3057 3020 5.05 87.22 0.75 0.86
14 A" 1430 1413 10.41 8.28 0.75 0.86
15 A" 1222 1207 0.42 1.73 0.75 0.86
16 A" 996 984 0.06 2.94 0.75 0.86
17 A" 749 740 4.37 0.04 0.75 0.86
18 A" 251 248 0.01 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14062.2 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 13892.0 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 PBEPBE/Def2TZVPP
ABC
1.00523 0.12436 0.11552

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -2.041 0.000
C2 0.598 -1.083 0.000
Br3 0.000 0.800 0.000
H4 1.223 -1.180 0.893
H5 1.223 -1.180 -0.893
H6 -0.195 -3.076 0.000
H7 -1.201 -1.906 0.890
H8 -1.201 -1.906 -0.890

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51282.89802.18302.18301.10161.09731.0973
C21.51281.97511.09471.09472.14522.16892.1689
Br32.89801.97512.49252.49253.88073.09123.0912
H42.18301.09472.49251.78602.53102.53063.0955
H52.18301.09472.49251.78602.53103.09552.5306
H61.10162.14523.88072.53102.53101.78081.7808
H71.09732.16893.09122.53063.09551.78081.7794
H81.09732.16893.09123.09552.53061.78081.7794

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 111.692 C1 C2 H4 112.713
C1 C2 H5 112.713 C2 C1 H6 109.266
C2 C1 H7 111.402 C2 C1 H8 111.402
Br3 C2 H4 104.915 Br3 C2 H5 104.915
H4 C2 H5 109.330 H6 C1 H7 108.157
H6 C1 H8 108.157 H7 C1 H8 108.347
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.227      
2 C -0.146      
3 Br -0.153      
4 H 0.127      
5 H 0.127      
6 H 0.083      
7 H 0.094      
8 H 0.094      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.435 -2.081 0.000 2.126
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.098 -0.946 0.000
y -0.946 -30.200 0.000
z 0.000 0.000 -32.359
Traceless
 xyz
x -0.818 -0.946 0.000
y -0.946 2.029 0.000
z 0.000 0.000 -1.211
Polar
3z2-r2-2.421
x2-y2-1.898
xy-0.946
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.151 -0.089 0.000
y -0.089 8.973 0.000
z 0.000 0.000 5.727


<r2> (average value of r2) Å2
<r2> 106.840
(<r2>)1/2 10.336