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

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-2653.538627
Energy at 298.15K 
HF Energy-2653.538627
Nuclear repulsion energy163.944668
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 mPW1PW91/6-311G**
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' 3134 2998 24.93 69.96 0.51 0.68
2 A' 3117 2982 4.00 129.26 0.20 0.34
3 A' 3055 2923 18.06 170.74 0.06 0.11
4 A' 1502 1437 3.11 8.59 0.75 0.86
5 A' 1489 1425 1.73 9.15 0.72 0.84
6 A' 1415 1353 6.83 3.73 0.74 0.85
7 A' 1289 1233 57.08 3.98 0.66 0.79
8 A' 1093 1046 0.10 3.77 0.43 0.60
9 A' 986 944 18.08 4.59 0.72 0.83
10 A' 580 555 16.05 18.21 0.26 0.42
11 A' 288 275 2.23 2.26 0.51 0.67
12 A" 3187 3049 11.07 28.09 0.75 0.86
13 A" 3150 3013 7.06 88.99 0.75 0.86
14 A" 1486 1422 10.51 10.65 0.75 0.86
15 A" 1271 1216 0.90 3.08 0.75 0.86
16 A" 1043 998 0.19 5.04 0.75 0.86
17 A" 777 744 5.68 0.22 0.75 0.86
18 A" 265 253 0.00 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14562.4 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 13931.9 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 mPW1PW91/6-311G**
ABC
1.01628 0.12579 0.11684

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.570 -2.032 0.000
C2 0.595 -1.072 0.000
Br3 0.000 0.795 0.000
H4 1.216 -1.174 0.887
H5 1.216 -1.174 -0.887
H6 -0.192 -3.058 0.000
H7 -1.194 -1.898 0.884
H8 -1.194 -1.898 -0.884

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.50932.88352.17112.17111.09431.09041.0904
C21.50931.96001.08751.08752.13622.15962.1596
Br32.88351.96002.47862.47863.85823.07543.0754
H42.17111.08752.47861.77372.51402.51663.0774
H52.17111.08752.47861.77372.51403.07742.5166
H61.09432.13623.85822.51402.51401.77021.7702
H71.09042.15963.07542.51663.07741.77021.7687
H81.09042.15963.07543.07742.51661.77021.7687

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 111.779 C1 C2 H4 112.438
C1 C2 H5 112.438 C2 C1 H6 109.229
C2 C1 H7 111.323 C2 C1 H8 111.323
Br3 C2 H4 105.217 Br3 C2 H5 105.217
H4 C2 H5 109.265 H6 C1 H7 108.237
H6 C1 H8 108.237 H7 C1 H8 108.392
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.331      
2 C -0.355      
3 Br -0.092      
4 H 0.179      
5 H 0.179      
6 H 0.130      
7 H 0.145      
8 H 0.145      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.481 -2.145 0.000 2.198
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.803 -1.002 0.000
y -1.002 -29.860 0.000
z 0.000 0.000 -32.121
Traceless
 xyz
x -0.813 -1.002 0.000
y -1.002 2.103 0.000
z 0.000 0.000 -1.290
Polar
3z2-r2-2.580
x2-y2-1.944
xy-1.002
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.930 -0.244 0.000
y -0.244 7.858 0.000
z 0.000 0.000 4.498


<r2> (average value of r2) Å2
<r2> 105.685
(<r2>)1/2 10.280