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

using model chemistry: M06-2X/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-171.997695
Energy at 298.15K 
HF Energy-171.997695
Nuclear repulsion energy103.144966
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/6-31G(2df,p)
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' 3174 3023 11.92 70.62 0.71 0.83
2 A' 3091 2944 7.50 49.72 0.16 0.28
3 A' 3085 2938 10.06 159.69 0.01 0.02
4 A' 2431 2315 8.45 57.19 0.24 0.39
5 A' 1507 1435 4.71 8.67 0.73 0.85
6 A' 1473 1403 4.39 15.57 0.72 0.83
7 A' 1414 1347 1.07 1.99 0.65 0.79
8 A' 1349 1285 3.35 4.03 0.59 0.74
9 A' 1098 1046 3.82 4.41 0.12 0.22
10 A' 1036 987 0.70 4.98 0.54 0.70
11 A' 856 816 0.25 5.35 0.15 0.25
12 A' 561 534 0.91 1.41 0.34 0.51
13 A' 214 204 4.34 2.15 0.72 0.84
14 A" 3176 3025 10.77 25.65 0.75 0.86
15 A" 3134 2985 0.47 90.96 0.75 0.86
16 A" 1499 1427 6.38 16.12 0.75 0.86
17 A" 1287 1225 0.01 6.41 0.75 0.86
18 A" 1115 1062 0.23 0.24 0.75 0.86
19 A" 787 750 3.82 0.35 0.75 0.86
20 A" 410 391 0.57 2.31 0.75 0.86
21 A" 225 214 1.06 0.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16460.3 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 15676.8 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/6-31G(2df,p)
ABC
0.92778 0.15801 0.14215

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.509 0.553 0.000
C2 0.000 0.816 0.000
C3 -0.769 -0.428 0.000
N4 -1.358 -1.416 0.000
H5 2.051 1.501 0.000
H6 1.801 -0.015 0.884
H7 1.801 -0.015 -0.884
H8 -0.292 1.396 0.879
H9 -0.292 1.396 -0.879

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53202.48113.47881.09091.09091.09092.17472.1747
C21.53201.46332.61332.16172.17192.17191.09301.0930
C32.48111.46331.15003.41662.74952.74952.08082.0808
N43.47882.61331.15004.48643.56753.56753.13353.1335
H51.09092.16173.41664.48641.77231.77232.50472.5047
H61.09092.17192.74953.56751.77231.76812.52503.0797
H71.09092.17192.74953.56751.77231.76813.07972.5250
H82.17471.09302.08083.13352.50472.52503.07971.7583
H92.17471.09302.08083.13352.50473.07972.52501.7583

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 111.835 C1 C2 H8 110.771
C1 C2 H9 110.771 C2 C1 H5 109.864
C2 C1 H6 110.675 C2 C1 H7 110.675
C2 C3 N4 179.088 C3 C2 H8 108.099
C3 C2 H9 108.099 H5 C1 H6 108.647
H5 C1 H7 108.647 H6 C1 H7 108.272
H8 C2 H9 107.090
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.412      
2 C -0.342      
3 C 0.202      
4 N -0.263      
5 H 0.146      
6 H 0.159      
7 H 0.159      
8 H 0.175      
9 H 0.175      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.217 3.212 0.000 3.903
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.711 -3.579 0.000
y -3.579 -27.081 0.000
z 0.000 0.000 -23.532
Traceless
 xyz
x -1.405 -3.579 0.000
y -3.579 -1.960 0.000
z 0.000 0.000 3.364
Polar
3z2-r26.729
x2-y20.370
xy-3.579
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.501 1.114 0.000
y 1.114 5.900 0.000
z 0.000 0.000 4.254


<r2> (average value of r2) Å2
<r2> 87.333
(<r2>)1/2 9.345