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

using model chemistry: M06-2X/6-31G

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
 hartrees
Energy at 0K-171.933847
Energy at 298.15K 
HF Energy-171.933847
Nuclear repulsion energy102.620799
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
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' 3187 3187 16.07 75.09 0.71 0.83
2 A' 3102 3102 17.05 19.45 0.13 0.22
3 A' 3098 3098 3.94 198.29 0.04 0.08
4 A' 2387 2387 8.30 50.13 0.28 0.44
5 A' 1552 1552 9.73 13.25 0.74 0.85
6 A' 1527 1527 9.21 22.23 0.71 0.83
7 A' 1470 1470 5.13 2.67 0.71 0.83
8 A' 1391 1391 1.80 7.08 0.66 0.79
9 A' 1129 1129 8.88 2.99 0.18 0.30
10 A' 1057 1057 1.11 7.35 0.46 0.63
11 A' 865 865 0.33 6.16 0.20 0.33
12 A' 559 559 1.85 2.33 0.43 0.60
13 A' 214 214 3.11 3.51 0.73 0.84
14 A" 3190 3190 15.35 29.33 0.75 0.86
15 A" 3140 3140 1.08 96.93 0.75 0.86
16 A" 1546 1546 10.83 23.45 0.75 0.86
17 A" 1319 1319 0.01 11.34 0.75 0.86
18 A" 1157 1157 0.65 0.10 0.75 0.86
19 A" 822 822 5.26 0.47 0.75 0.86
20 A" 394 394 0.00 4.50 0.75 0.86
21 A" 219 219 0.72 0.69 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16662.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16662.6 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
ABC
0.92269 0.15624 0.14061

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.516 0.557 0.000
C2 0.000 0.818 0.000
C3 -0.773 -0.425 0.000
N4 -1.367 -1.428 0.000
H5 2.055 1.507 0.000
H6 1.812 -0.010 0.885
H7 1.812 -0.010 -0.885
H8 -0.284 1.405 0.879
H9 -0.284 1.405 -0.879

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53822.49073.50031.09201.09191.09192.17512.1751
C21.53821.46402.62922.16772.17962.17961.09461.0946
C32.49071.46401.16543.42512.76322.76322.08882.0888
N43.50032.62921.16544.50833.59153.59153.15793.1579
H51.09202.16773.42514.50831.77251.77252.50112.5011
H61.09192.17962.76323.59151.77251.77022.52843.0831
H71.09192.17962.76323.59151.77251.77023.08312.5284
H82.17511.09462.08883.15792.50112.52843.08311.7583
H92.17511.09462.08883.15792.50113.08312.52841.7583

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 112.099 C1 C2 H8 110.273
C1 C2 H9 110.273 C2 C1 H5 109.851
C2 C1 H6 110.792 C2 C1 H7 110.792
C2 C3 N4 178.803 C3 C2 H8 108.583
C3 C2 H9 108.583 H5 C1 H6 108.514
H5 C1 H7 108.514 H6 C1 H7 108.308
H8 C2 H9 106.868
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.440      
2 C -0.338      
3 C 0.101      
4 N -0.269      
5 H 0.169      
6 H 0.177      
7 H 0.177      
8 H 0.212      
9 H 0.212      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.239 3.267 0.000 3.961
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.100 -3.873 0.000
y -3.873 -27.760 0.000
z 0.000 0.000 -23.844
Traceless
 xyz
x -1.298 -3.873 0.000
y -3.873 -2.289 0.000
z 0.000 0.000 3.587
Polar
3z2-r27.173
x2-y20.660
xy-3.873
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.995 1.218 0.000
y 1.218 5.683 0.000
z 0.000 0.000 3.859


<r2> (average value of r2) Å2
<r2> 88.356
(<r2>)1/2 9.400