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All results from a given calculation for C2H5CN (ethyl cyanide)

using model chemistry: M06-2X/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 M06-2X/6-311G**
 hartrees
Energy at 0K-172.033165
Energy at 298.15K 
HF Energy-172.033165
Nuclear repulsion energy103.192982
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 M06-2X/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3165 3165 12.27 72.24 0.69 0.82
2 A' 3091 3091 6.50 60.91 0.13 0.23
3 A' 3083 3083 10.86 173.52 0.01 0.02
4 A' 2425 2425 8.79 60.65 0.25 0.40
5 A' 1512 1512 7.30 6.03 0.74 0.85
6 A' 1481 1481 6.19 11.58 0.74 0.85
7 A' 1421 1421 2.64 1.76 0.22 0.36
8 A' 1356 1356 2.90 2.62 0.56 0.72
9 A' 1102 1102 4.72 3.56 0.15 0.26
10 A' 1035 1035 1.02 5.40 0.46 0.63
11 A' 856 856 0.21 5.12 0.13 0.23
12 A' 561 561 0.99 1.99 0.36 0.53
13 A' 215 215 4.01 2.95 0.73 0.84
14 A" 3167 3167 11.56 23.17 0.75 0.86
15 A" 3129 3129 0.17 91.66 0.75 0.86
16 A" 1504 1504 9.34 10.48 0.75 0.86
17 A" 1295 1295 0.03 4.88 0.75 0.86
18 A" 1120 1120 0.47 0.04 0.75 0.86
19 A" 793 793 4.18 0.38 0.75 0.86
20 A" 404 404 0.20 3.14 0.75 0.86
21 A" 223 223 0.81 0.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16468.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16468.0 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 M06-2X/6-311G**
ABC
0.92633 0.15821 0.14228

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.510 0.552 0.000
C2 0.000 0.817 0.000
C3 -0.771 -0.427 0.000
N4 -1.357 -1.415 0.000
H5 2.052 1.497 0.000
H6 1.800 -0.016 0.884
H7 1.800 -0.016 -0.884
H8 -0.293 1.395 0.879
H9 -0.293 1.395 -0.879

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53272.48183.47601.09001.08991.08992.17552.1755
C21.53271.46382.61192.16142.17192.17191.09191.0919
C32.48181.46381.14823.41632.74992.74992.07862.0786
N43.47602.61191.14824.48303.56433.56433.13023.1302
H51.09002.16143.41634.48301.77061.77062.50612.5061
H61.08992.17192.74993.56431.77061.76722.52463.0791
H71.08992.17192.74993.56431.77061.76723.07912.5246
H82.17551.09192.07863.13022.50612.52463.07911.7583
H92.17551.09192.07863.13022.50613.07912.52461.7583

picture of ethyl cyanide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 111.811 C1 C2 H8 110.846
C1 C2 H9 110.846 C2 C1 H5 109.845
C2 C1 H6 110.677 C2 C1 H7 110.677
C2 C3 N4 178.887 C3 C2 H8 107.958
C3 C2 H9 107.958 H5 C1 H6 108.627
H5 C1 H7 108.627 H6 C1 H7 108.328
H8 C2 H9 107.243
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.378      
2 C -0.295      
3 C 0.097      
4 N -0.275      
5 H 0.151      
6 H 0.159      
7 H 0.159      
8 H 0.191      
9 H 0.191      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.264 3.286 0.000 3.991
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.201 -3.635 0.000
y -3.635 -27.555 0.000
z 0.000 0.000 -23.961
Traceless
 xyz
x -1.443 -3.635 0.000
y -3.635 -1.974 0.000
z 0.000 0.000 3.417
Polar
3z2-r26.835
x2-y20.354
xy-3.635
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.580 1.157 0.000
y 1.157 5.975 0.000
z 0.000 0.000 4.206


<r2> (average value of r2) Å2
<r2> 87.557
(<r2>)1/2 9.357