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

using model chemistry: PBE1PBE/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at PBE1PBE/Def2TZVPP
 hartrees
Energy at 0K-171.920771
Energy at 298.15K 
HF Energy-171.920771
Nuclear repulsion energy103.337515
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 PBE1PBE/Def2TZVPP
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' 3149 3149 13.26 69.61 0.69 0.82
2 A' 3069 3069 16.04 29.51 0.09 0.17
3 A' 3066 3066 3.40 247.71 0.02 0.04
4 A' 2382 2382 11.47 78.35 0.21 0.35
5 A' 1499 1499 6.57 4.26 0.74 0.85
6 A' 1465 1465 6.45 9.61 0.69 0.82
7 A' 1412 1412 2.00 0.81 0.34 0.51
8 A' 1347 1347 2.90 2.60 0.50 0.67
9 A' 1096 1096 3.86 4.35 0.13 0.22
10 A' 1037 1037 0.53 3.73 0.46 0.63
11 A' 856 856 0.05 5.24 0.09 0.17
12 A' 558 558 0.87 1.71 0.25 0.40
13 A' 214 214 4.17 2.41 0.73 0.85
14 A" 3153 3153 12.11 25.89 0.75 0.86
15 A" 3104 3104 0.32 84.62 0.75 0.86
16 A" 1491 1491 8.45 7.51 0.75 0.86
17 A" 1287 1287 0.02 3.07 0.75 0.86
18 A" 1110 1110 0.41 0.08 0.75 0.86
19 A" 787 787 4.12 0.32 0.75 0.86
20 A" 400 400 0.30 2.03 0.75 0.86
21 A" 220 220 1.02 0.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16350.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16350.2 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 PBE1PBE/Def2TZVPP
ABC
0.94293 0.15795 0.14242

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.506 0.562 0.000
C2 0.000 0.807 0.000
C3 -0.766 -0.431 0.000
N4 -1.358 -1.416 0.000
H5 2.036 1.515 0.000
H6 1.810 -0.001 0.882
H7 1.810 -0.001 -0.882
H8 -0.298 1.387 0.877
H9 -0.298 1.387 -0.877

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.52612.47983.48111.09011.08981.08982.16922.1692
C21.52611.45512.60482.15592.16942.16941.09301.0930
C32.47981.45511.14973.41142.75662.75662.07152.0715
N43.48112.60481.14974.48463.58023.58023.12243.1224
H51.09012.15593.41144.48461.76831.76832.49692.4969
H61.08982.16942.75663.58021.76831.76492.52363.0765
H71.08982.16942.75663.58021.76831.76493.07652.5236
H82.16921.09302.07153.12242.49692.52363.07651.7541
H92.16921.09302.07153.12242.49693.07652.52361.7541

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 112.546 C1 C2 H8 110.744
C1 C2 H9 110.744 C2 C1 H5 109.863
C2 C1 H6 110.955 C2 C1 H7 110.955
C2 C3 N4 179.225 C3 C2 H8 107.925
C3 C2 H9 107.925 H5 C1 H6 108.423
H5 C1 H7 108.423 H6 C1 H7 108.141
H8 C2 H9 106.725
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.245      
2 C 0.016      
3 C -0.272      
4 N -0.002      
5 H 0.092      
6 H 0.100      
7 H 0.100      
8 H 0.106      
9 H 0.106      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.343 3.392 0.000 4.122
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.248 -3.798 0.000
y -3.798 -27.657 0.000
z 0.000 0.000 -23.882
Traceless
 xyz
x -1.479 -3.798 0.000
y -3.798 -2.092 0.000
z 0.000 0.000 3.571
Polar
3z2-r27.142
x2-y20.409
xy-3.798
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.221 1.204 0.000
y 1.204 6.521 0.000
z 0.000 0.000 4.754


<r2> (average value of r2) Å2
<r2> 87.511
(<r2>)1/2 9.355