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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-171.989951
Energy at 298.15K 
HF Energy-171.989951
Nuclear repulsion energy102.917191
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' 3183 3025 14.08 75.52 0.71 0.83
2 A' 3100 2947 10.31 29.52 0.29 0.44
3 A' 3096 2942 9.00 190.64 0.02 0.03
4 A' 2440 2319 8.19 54.69 0.29 0.45
5 A' 1521 1445 5.22 11.28 0.74 0.85
6 A' 1486 1413 4.78 18.49 0.72 0.84
7 A' 1429 1358 1.49 2.89 0.65 0.79
8 A' 1359 1291 3.01 4.50 0.62 0.76
9 A' 1104 1049 4.73 3.93 0.16 0.28
10 A' 1039 987 0.94 5.45 0.54 0.70
11 A' 859 816 0.25 5.15 0.18 0.31
12 A' 557 529 1.04 1.95 0.44 0.61
13 A' 213 202 4.15 2.90 0.73 0.84
14 A" 3186 3028 13.29 29.30 0.75 0.86
15 A" 3143 2987 0.84 96.77 0.75 0.86
16 A" 1513 1438 7.11 19.82 0.75 0.86
17 A" 1293 1229 0.01 8.31 0.75 0.86
18 A" 1119 1064 0.30 0.21 0.75 0.86
19 A" 792 753 4.05 0.40 0.75 0.86
20 A" 403 383 0.33 3.64 0.75 0.86
21 A" 225 214 0.99 0.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16529.4 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 15709.5 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
0.92653 0.15714 0.14143

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 1.511 0.559 0.000
C2 0.000 0.818 0.000
C3 -0.769 -0.431 0.000
N4 -1.360 -1.424 0.000
H5 2.049 1.508 0.000
H6 1.805 -0.008 0.885
H7 1.805 -0.008 -0.885
H8 -0.295 1.397 0.880
H9 -0.295 1.397 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53272.48553.48861.09151.09131.09132.17662.1766
C21.53271.46712.62242.16232.17362.17361.09371.0937
C32.48551.46711.15553.42122.75502.75502.08322.0832
N43.48862.62241.15554.49663.57833.57833.14093.1409
H51.09152.16233.42124.49661.77241.77242.50672.5067
H61.09132.17362.75503.57831.77241.76932.52703.0822
H71.09132.17362.75503.57831.77241.76933.08222.5270
H82.17661.09372.08323.14092.50672.52703.08221.7600
H92.17661.09372.08323.14092.50673.08222.52701.7600

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 111.885 C1 C2 H8 110.827
C1 C2 H9 110.827 C2 C1 H5 109.835
C2 C1 H6 110.735 C2 C1 H7 110.735
C2 C3 N4 179.090 C3 C2 H8 107.989
C3 C2 H9 107.989 H5 C1 H6 108.578
H5 C1 H7 108.578 H6 C1 H7 108.317
H8 C2 H9 107.139
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 -0.368      
2 C -0.288      
3 C 0.312      
4 N -0.458      
5 H 0.141      
6 H 0.151      
7 H 0.151      
8 H 0.180      
9 H 0.180      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.215 3.221 0.000 3.909
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.768 -3.612 0.000
y -3.612 -27.227 0.000
z 0.000 0.000 -23.652
Traceless
 xyz
x -1.329 -3.612 0.000
y -3.612 -2.017 0.000
z 0.000 0.000 3.346
Polar
3z2-r26.692
x2-y20.459
xy-3.612
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.234 1.190 0.000
y 1.190 5.810 0.000
z 0.000 0.000 4.037


<r2> (average value of r2) Å2
<r2> 87.734
(<r2>)1/2 9.367