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

using model chemistry: mPW1PW91/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 mPW1PW91/Def2TZVPP
 hartrees
Energy at 0K-172.087130
Energy at 298.15K 
HF Energy-172.087130
Nuclear repulsion energy103.365723
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 mPW1PW91/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' 3153 3153 13.73 68.34 0.70 0.82
2 A' 3074 3074 15.65 17.44 0.23 0.37
3 A' 3072 3072 4.27 256.76 0.02 0.03
4 A' 2384 2384 11.49 77.90 0.21 0.35
5 A' 1506 1506 6.29 4.24 0.74 0.85
6 A' 1472 1472 6.24 9.50 0.69 0.82
7 A' 1419 1419 1.77 0.76 0.35 0.52
8 A' 1352 1352 2.99 2.65 0.50 0.67
9 A' 1099 1099 3.91 4.06 0.12 0.22
10 A' 1035 1035 0.47 4.13 0.43 0.60
11 A' 855 855 0.06 5.31 0.09 0.17
12 A' 558 558 0.88 1.71 0.25 0.40
13 A' 214 214 4.22 2.42 0.73 0.85
14 A" 3158 3158 12.66 25.32 0.75 0.86
15 A" 3110 3110 0.37 83.69 0.75 0.86
16 A" 1498 1498 8.16 7.47 0.75 0.86
17 A" 1292 1292 0.02 3.08 0.75 0.86
18 A" 1115 1115 0.40 0.07 0.75 0.86
19 A" 790 790 4.03 0.32 0.75 0.86
20 A" 400 400 0.34 2.05 0.75 0.86
21 A" 220 220 1.04 0.49 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16387.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16387.2 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 mPW1PW91/Def2TZVPP
ABC
0.94446 0.15788 0.14238

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.507 0.562 0.000
C2 0.000 0.806 0.000
C3 -0.766 -0.432 0.000
N4 -1.359 -1.415 0.000
H5 2.036 1.514 0.000
H6 1.811 0.001 0.881
H7 1.811 0.001 -0.881
H8 -0.298 1.385 0.876
H9 -0.298 1.385 -0.876

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.52702.48123.48221.08891.08831.08832.16852.1685
C21.52701.45572.60422.15562.16892.16891.09141.0914
C32.48121.45571.14853.41152.75732.75732.07032.0703
N43.48222.60421.14854.48413.58143.58143.12003.1200
H51.08892.15563.41154.48411.76611.76612.49622.4962
H61.08832.16892.75733.58141.76611.76292.52203.0741
H71.08832.16892.75733.58141.76611.76293.07412.5220
H82.16851.09142.07033.12002.49622.52203.07411.7526
H92.16851.09142.07033.12002.49623.07412.52201.7526

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 112.562 C1 C2 H8 110.726
C1 C2 H9 110.726 C2 C1 H5 109.852
C2 C1 H6 110.944 C2 C1 H7 110.944
C2 C3 N4 179.309 C3 C2 H8 107.889
C3 C2 H9 107.889 H5 C1 H6 108.421
H5 C1 H7 108.421 H6 C1 H7 108.179
H8 C2 H9 106.818
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.229      
2 C 0.024      
3 C -0.266      
4 N 0.001      
5 H 0.085      
6 H 0.095      
7 H 0.095      
8 H 0.097      
9 H 0.097      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.347 3.389 0.000 4.123
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.183 -3.809 0.000
y -3.809 -27.597 0.000
z 0.000 0.000 -23.805
Traceless
 xyz
x -1.482 -3.809 0.000
y -3.809 -2.103 0.000
z 0.000 0.000 3.585
Polar
3z2-r27.170
x2-y20.414
xy-3.809
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.194 1.204 0.000
y 1.204 6.485 0.000
z 0.000 0.000 4.724


<r2> (average value of r2) Å2
<r2> 87.474
(<r2>)1/2 9.353