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

using model chemistry: mPW1PW91/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-172.031014
Energy at 298.15K 
HF Energy-172.031014
Nuclear repulsion energy102.779885
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/cc-pVDZ
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' 3173 3040 12.51 79.68 0.71 0.83
2 A' 3080 2951 15.12 11.54 0.68 0.81
3 A' 3079 2951 7.45 236.25 0.02 0.03
4 A' 2392 2292 10.28 62.47 0.26 0.42
5 A' 1484 1422 5.85 8.39 0.74 0.85
6 A' 1449 1388 5.41 14.18 0.72 0.83
7 A' 1403 1344 0.87 1.77 0.51 0.67
8 A' 1343 1287 4.17 3.09 0.54 0.70
9 A' 1096 1050 3.40 4.60 0.17 0.29
10 A' 1046 1002 0.87 3.54 0.57 0.73
11 A' 861 825 0.11 4.85 0.13 0.23
12 A' 553 530 0.95 1.61 0.36 0.52
13 A' 214 205 3.49 2.59 0.73 0.85
14 A" 3176 3043 11.20 33.99 0.75 0.86
15 A" 3125 2994 0.86 97.66 0.75 0.86
16 A" 1474 1412 7.73 14.24 0.75 0.86
17 A" 1281 1227 0.03 4.77 0.75 0.86
18 A" 1102 1056 0.63 0.11 0.75 0.86
19 A" 788 756 4.73 0.41 0.75 0.86
20 A" 401 384 0.11 2.62 0.75 0.86
21 A" 226 216 0.75 0.49 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16370.8 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 15688.1 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/cc-pVDZ
ABC
0.93801 0.15616 0.14095

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.510 0.573 0.000
C2 0.000 0.808 0.000
C3 -0.766 -0.435 0.000
N4 -1.362 -1.430 0.000
H5 2.038 1.535 0.000
H6 1.821 0.008 0.889
H7 1.821 0.008 -0.889
H8 -0.305 1.392 0.882
H9 -0.305 1.392 -0.882

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.52822.48943.50111.09811.09811.09812.17772.1777
C21.52821.46072.62012.16382.17862.17861.10081.1008
C32.48941.46071.15953.42752.77132.77132.08072.0807
N43.50112.62011.15954.51143.60373.60373.13983.1398
H51.09812.16383.42754.51141.78061.78062.50762.5076
H61.09812.17862.77133.60371.78061.77772.53643.0936
H71.09812.17862.77133.60371.78061.77773.09362.5364
H82.17771.10082.08073.13982.50762.53643.09361.7648
H92.17771.10082.08073.13982.50763.09362.53641.7648

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 112.772 C1 C2 H8 110.808
C1 C2 H9 110.808 C2 C1 H5 109.876
C2 C1 H6 111.045 C2 C1 H7 111.045
C2 C3 N4 179.251 C3 C2 H8 107.812
C3 C2 H9 107.812 H5 C1 H6 108.348
H5 C1 H7 108.348 H6 C1 H7 108.088
H8 C2 H9 106.566
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.086      
2 C -0.071      
3 C -0.068      
4 N -0.148      
5 H 0.054      
6 H 0.068      
7 H 0.068      
8 H 0.091      
9 H 0.091      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.200 3.198 0.000 3.882
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.696 -3.529 0.000
y -3.529 -27.059 0.000
z 0.000 0.000 -23.599
Traceless
 xyz
x -1.367 -3.529 0.000
y -3.529 -1.911 0.000
z 0.000 0.000 3.278
Polar
3z2-r26.556
x2-y20.363
xy-3.529
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.498 1.164 0.000
y 1.164 5.902 0.000
z 0.000 0.000 4.136


<r2> (average value of r2) Å2
<r2> 87.968
(<r2>)1/2 9.379