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

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/cc-pVDZ
 hartrees
Energy at 0K-171.894411
Energy at 298.15K 
HF Energy-171.700765
Nuclear repulsion energy102.292183
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 B2PLYP=FULLultrafine/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' 3166 3033 16.16 78.93 0.72 0.83
2 A' 3082 2953 6.99 131.99 0.07 0.12
3 A' 3077 2949 17.99 110.36 0.01 0.02
4 A' 2294 2198 1.74 51.65 0.25 0.41
5 A' 1496 1434 4.77 7.93 0.74 0.85
6 A' 1464 1403 4.10 15.23 0.72 0.84
7 A' 1413 1354 0.45 1.57 0.49 0.66
8 A' 1351 1295 4.66 3.15 0.52 0.68
9 A' 1098 1052 3.05 4.22 0.15 0.26
10 A' 1036 993 0.62 4.82 0.52 0.69
11 A' 851 815 0.24 5.31 0.13 0.24
12 A' 541 518 0.79 1.50 0.34 0.50
13 A' 211 202 3.31 2.53 0.73 0.84
14 A" 3170 3038 15.24 31.25 0.75 0.86
15 A" 3125 2995 1.51 100.49 0.75 0.86
16 A" 1487 1425 6.60 14.53 0.75 0.86
17 A" 1289 1236 0.00 5.11 0.75 0.86
18 A" 1111 1065 0.59 0.15 0.75 0.86
19 A" 791 758 3.24 0.36 0.75 0.86
20 A" 390 373 0.10 2.48 0.75 0.86
21 A" 228 219 0.77 0.53 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16335.7 cm-1
Scaled (by 0.9582) Zero Point Vibrational Energy (zpe) 15652.9 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 B2PLYP=FULLultrafine/cc-pVDZ
ABC
0.92587 0.15485 0.13964

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.515 0.574 0.000
C2 0.000 0.817 0.000
C3 -0.770 -0.435 0.000
N4 -1.366 -1.441 0.000
H5 2.048 1.535 0.000
H6 1.822 0.006 0.890
H7 1.822 0.006 -0.890
H8 -0.300 1.401 0.884
H9 -0.300 1.401 -0.884

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53482.49773.51581.09921.09911.09912.18242.1824
C21.53481.46952.63912.17012.18362.18361.10121.1012
C32.49771.46951.16973.43792.77542.77542.09062.0906
N43.51582.63911.16974.52903.61223.61223.16123.1612
H51.09922.17013.43794.52901.78351.78352.51272.5127
H61.09912.18362.77543.61221.78351.78052.53913.0976
H71.09912.18362.77543.61221.78351.78053.09762.5391
H82.18241.10122.09063.16122.51272.53913.09761.7682
H92.18241.10122.09063.16122.51273.09762.53911.7682

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 112.463 C1 C2 H8 110.697
C1 C2 H9 110.697 C2 C1 H5 109.845
C2 C1 H6 110.915 C2 C1 H7 110.915
C2 C3 N4 179.048 C3 C2 H8 107.975
C3 C2 H9 107.975 H5 C1 H6 108.450
H5 C1 H7 108.450 H6 C1 H7 108.188
H8 C2 H9 106.813
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.041      
2 C -0.031      
3 C -0.108      
4 N -0.105      
5 H 0.038      
6 H 0.052      
7 H 0.052      
8 H 0.072      
9 H 0.072      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.125 3.112 0.000 3.768
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.047 -3.507 -0.009
y -3.507 -27.441 -0.007
z -0.009 -0.007 -23.912
Traceless
 xyz
x -1.370 -3.507 -0.009
y -3.507 -1.961 -0.007
z -0.009 -0.007 3.332
Polar
3z2-r26.663
x2-y20.394
xy-3.507
xz-0.009
yz-0.007


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.465 1.133 0.001
y 1.133 5.881 0.000
z 0.001 0.000 4.158


<r2> (average value of r2) Å2
<r2> 88.806
(<r2>)1/2 9.424