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

using model chemistry: TPSSh/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at TPSSh/cc-pVQZ
 hartrees
Energy at 0K-172.150637
Energy at 298.15K 
HF Energy-172.150637
Nuclear repulsion energy102.974378
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 TPSSh/cc-pVQZ
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' 3113 3113 19.16 71.67 0.71 0.83
2 A' 3042 3042 20.35 87.45 0.02 0.04
3 A' 3038 3038 5.01 206.59 0.03 0.06
4 A' 2326 2326 8.69 81.77 0.20 0.33
5 A' 1517 1517 4.55 3.78 0.73 0.84
6 A' 1481 1481 4.88 9.06 0.67 0.80
7 A' 1422 1422 0.87 0.54 0.41 0.58
8 A' 1344 1344 3.05 3.47 0.42 0.59
9 A' 1091 1091 3.29 4.19 0.12 0.21
10 A' 1010 1010 0.22 5.29 0.38 0.55
11 A' 836 836 0.10 5.78 0.09 0.16
12 A' 544 544 0.81 1.60 0.18 0.30
13 A' 208 208 4.01 2.23 0.73 0.84
14 A" 3120 3120 18.52 26.50 0.75 0.86
15 A" 3072 3072 1.03 86.86 0.75 0.86
16 A" 1509 1509 6.47 6.33 0.75 0.86
17 A" 1290 1290 0.01 2.55 0.75 0.86
18 A" 1114 1114 0.46 0.08 0.75 0.86
19 A" 783 783 2.79 0.35 0.75 0.86
20 A" 387 387 0.25 1.62 0.75 0.86
21 A" 218 218 0.99 0.40 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16232.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16232.3 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 TPSSh/cc-pVQZ
ABC
0.93611 0.15664 0.14122

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.516 0.562 0.000
C2 0.000 0.811 0.000
C3 -0.770 -0.432 0.000
N4 -1.365 -1.420 0.000
H5 2.043 1.516 0.000
H6 1.816 -0.001 0.883
H7 1.816 -0.001 -0.883
H8 -0.295 1.389 0.878
H9 -0.295 1.389 -0.878

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53582.49253.49691.09021.08951.08952.17552.1755
C21.53581.46172.61532.16142.17602.17601.09241.0924
C32.49251.46171.15373.42182.76652.76652.07702.0770
N43.49692.61531.15374.49873.59363.59363.13233.1323
H51.09022.16143.42184.49871.76991.76992.50042.5004
H61.08952.17602.76653.59361.76991.76682.52683.0804
H71.08952.17602.76653.59361.76991.76683.08042.5268
H82.17551.09242.07703.13232.50042.52683.08041.7568
H92.17551.09242.07703.13232.50043.08042.52681.7568

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 112.486 C1 C2 H8 110.601
C1 C2 H9 110.601 C2 C1 H5 109.616
C2 C1 H6 110.817 C2 C1 H7 110.817
C2 C3 N4 179.246 C3 C2 H8 107.950
C3 C2 H9 107.950 H5 C1 H6 108.583
H5 C1 H7 108.583 H6 C1 H7 108.363
H8 C2 H9 107.047
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.471      
2 C -0.289      
3 C 0.018      
4 N -0.201      
5 H 0.175      
6 H 0.176      
7 H 0.176      
8 H 0.208      
9 H 0.208      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.337 3.358 0.000 4.092
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.485 1.221 0.000
y 1.221 6.684 0.000
z 0.000 0.000 4.904


<r2> (average value of r2) Å2
<r2> 88.070
(<r2>)1/2 9.385