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

using model chemistry: mPW1PW91/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 mPW1PW91/daug-cc-pVDZ
 hartrees
Energy at 0K-2653.537782
Energy at 298.15K 
HF Energy-2653.537782
Nuclear repulsion energy163.813089
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 mPW1PW91/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' 3141 3141 19.72 73.89 0.63 0.77
2 A' 3119 3119 6.52 126.29 0.10 0.18
3 A' 3056 3056 18.52 212.16 0.05 0.09
4 A' 1476 1476 2.34 3.46 0.75 0.86
5 A' 1460 1460 1.20 4.46 0.72 0.84
6 A' 1390 1390 7.13 2.22 0.57 0.73
7 A' 1263 1263 48.82 6.25 0.27 0.43
8 A' 1091 1091 0.23 4.08 0.15 0.26
9 A' 979 979 16.95 3.24 0.55 0.71
10 A' 579 579 16.10 20.17 0.17 0.29
11 A' 289 289 2.07 2.70 0.26 0.41
12 A" 3193 3193 7.80 27.53 0.75 0.86
13 A" 3159 3159 6.81 72.15 0.75 0.86
14 A" 1460 1460 10.31 5.51 0.75 0.86
15 A" 1254 1254 0.32 0.85 0.75 0.86
16 A" 1030 1030 0.03 1.23 0.75 0.86
17 A" 768 768 3.84 0.01 0.75 0.86
18 A" 259 259 0.01 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14482.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14482.2 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 mPW1PW91/daug-cc-pVDZ
ABC
1.00947 0.12585 0.11686

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.572 -2.030 0.000
C2 0.596 -1.073 0.000
Br3 0.000 0.795 0.000
H4 1.220 -1.176 0.892
H5 1.220 -1.176 -0.892
H6 -0.192 -3.061 0.000
H7 -1.197 -1.893 0.889
H8 -1.197 -1.893 -0.889

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51012.88192.17622.17621.09911.09521.0952
C21.51011.96101.09311.09312.13842.16312.1631
Br32.88191.96102.48372.48373.86063.07383.0738
H42.17621.09312.48371.78362.51832.52123.0867
H52.17621.09312.48371.78362.51833.08672.5212
H61.09912.13843.86062.51832.51831.77901.7790
H71.09522.16313.07382.52123.08671.77901.7780
H81.09522.16313.07383.08672.52121.77901.7780

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 111.593 C1 C2 H4 112.449
C1 C2 H5 112.449 C2 C1 H6 109.062
C2 C1 H7 111.252 C2 C1 H8 111.252
Br3 C2 H4 105.262 Br3 C2 H5 105.262
H4 C2 H5 109.345 H6 C1 H7 108.329
H6 C1 H8 108.329 H7 C1 H8 108.527
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.653      
2 C 0.244      
3 Br 0.233      
4 H -0.322      
5 H -0.322      
6 H -0.281      
7 H -0.102      
8 H -0.102      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.465 -2.189 0.000 2.238
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.987 -1.003 0.000
y -1.003 -30.035 0.000
z 0.000 0.000 -32.277
Traceless
 xyz
x -0.831 -1.003 0.000
y -1.003 2.097 0.000
z 0.000 0.000 -1.266
Polar
3z2-r2-2.532
x2-y2-1.952
xy-1.003
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.735 -0.037 0.000
y -0.037 9.112 0.000
z 0.000 0.000 6.338


<r2> (average value of r2) Å2
<r2> 105.828
(<r2>)1/2 10.287