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

using model chemistry: B97D3/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B97D3/STO-3G
 hartrees
Energy at 0K-169.861982
Energy at 298.15K 
HF Energy-169.861982
Nuclear repulsion energy100.150862
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 B97D3/STO-3G
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' 3420 3420 0.76 34.49 0.72 0.84
2 A' 3250 3250 1.58 12.36 0.08 0.15
3 A' 3243 3243 0.02 81.22 0.05 0.10
4 A' 2305 2305 8.88 20.90 0.25 0.40
5 A' 1649 1649 3.52 9.17 0.74 0.85
6 A' 1595 1595 2.26 20.54 0.74 0.85
7 A' 1533 1533 0.41 4.07 0.75 0.86
8 A' 1420 1420 5.07 7.66 0.68 0.81
9 A' 1150 1150 4.25 2.78 0.21 0.35
10 A' 1061 1061 0.63 5.50 0.52 0.69
11 A' 851 851 0.04 3.68 0.20 0.33
12 A' 532 532 1.00 0.92 0.29 0.45
13 A' 205 205 1.76 1.64 0.73 0.84
14 A" 3425 3425 0.78 18.19 0.75 0.86
15 A" 3343 3343 0.08 42.17 0.75 0.86
16 A" 1642 1642 3.95 17.48 0.75 0.86
17 A" 1350 1350 0.01 11.36 0.75 0.86
18 A" 1169 1169 0.33 0.61 0.75 0.86
19 A" 833 833 5.58 0.21 0.75 0.86
20 A" 366 366 0.09 1.59 0.75 0.86
21 A" 206 206 0.43 0.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17274.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 17274.7 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 B97D3/STO-3G
ABC
0.89318 0.14789 0.13341

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.545 0.592 0.000
C2 0.000 0.841 0.000
C3 -0.781 -0.446 0.000
N4 -1.396 -1.486 0.000
H5 2.074 1.564 0.000
H6 1.845 0.022 0.899
H7 1.845 0.022 -0.899
H8 -0.292 1.432 0.898
H9 -0.292 1.432 -0.898

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.56532.54703.60081.10641.10581.10582.21042.2104
C21.56531.50512.71322.19622.21002.21001.11361.1136
C32.54701.50511.20813.49102.81472.81472.13782.1378
N43.60082.71321.20814.61933.68573.68573.24603.2460
H51.10642.19623.49104.61931.79951.79952.53362.5336
H61.10582.21002.81473.68571.79951.79772.56023.1277
H71.10582.21002.81473.68571.79951.79773.12772.5602
H82.21041.11362.13783.24602.53362.56023.12771.7956
H92.21041.11362.13783.24602.53363.12772.56021.7956

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 112.083 C1 C2 H8 110.060
C1 C2 H9 110.060 C2 C1 H5 109.373
C2 C1 H6 110.478 C2 C1 H7 110.478
C2 C3 N4 179.356 C3 C2 H8 108.523
C3 C2 H9 108.523 H5 C1 H6 108.864
H5 C1 H7 108.864 H6 C1 H7 108.745
H8 C2 H9 107.459
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.205      
2 C -0.130      
3 C 0.058      
4 N -0.184      
5 H 0.083      
6 H 0.085      
7 H 0.085      
8 H 0.103      
9 H 0.103      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.728 2.544 0.000 3.075
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.807 -3.015 0.000
y -3.015 -25.309 0.000
z 0.000 0.000 -22.180
Traceless
 xyz
x -1.062 -3.015 0.000
y -3.015 -1.816 0.000
z 0.000 0.000 2.878
Polar
3z2-r25.756
x2-y20.503
xy-3.015
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.861 0.979 0.000
y 0.979 3.461 0.000
z 0.000 0.000 2.012


<r2> (average value of r2) Å2
<r2> 90.717
(<r2>)1/2 9.525