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

using model chemistry: B97D3/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B97D3/TZVP
 hartrees
Energy at 0K-172.016096
Energy at 298.15K 
HF Energy-172.016096
Nuclear repulsion energy102.641669
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 B97D3/TZVP
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' 3078 3034 21.87 78.83 0.71 0.83
2 A' 3003 2960 23.42 102.63 0.01 0.03
3 A' 2994 2951 7.30 182.69 0.04 0.09
4 A' 2287 2254 8.33 84.25 0.23 0.37
5 A' 1482 1461 5.84 6.34 0.75 0.86
6 A' 1447 1426 5.98 13.00 0.71 0.83
7 A' 1392 1372 1.17 1.20 0.34 0.51
8 A' 1321 1302 2.65 4.31 0.62 0.77
9 A' 1072 1057 3.75 2.26 0.14 0.24
10 A' 991 977 0.15 6.43 0.38 0.55
11 A' 826 814 0.01 5.19 0.14 0.24
12 A' 541 533 1.03 2.39 0.25 0.39
13 A' 206 203 3.47 3.38 0.74 0.85
14 A" 3083 3039 21.31 31.72 0.75 0.86
15 A" 3027 2984 2.10 95.14 0.75 0.86
16 A" 1474 1453 7.75 10.57 0.75 0.86
17 A" 1266 1248 0.00 5.60 0.75 0.86
18 A" 1094 1078 0.44 0.17 0.75 0.86
19 A" 780 769 3.14 0.30 0.75 0.86
20 A" 380 375 0.07 3.06 0.75 0.86
21 A" 216 213 0.85 0.84 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15980.0 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 15749.9 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 B97D3/TZVP
ABC
0.92927 0.15584 0.14046

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.520 0.562 0.000
C2 0.000 0.811 0.000
C3 -0.773 -0.429 0.000
N4 -1.370 -1.424 0.000
H5 2.051 1.519 0.000
H6 1.821 -0.004 0.887
H7 1.821 -0.004 -0.887
H8 -0.294 1.396 0.881
H9 -0.294 1.396 -0.881

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.54022.49753.50631.09461.09391.09392.18232.1823
C21.54021.46142.62202.16972.18342.18341.09751.0975
C32.49751.46141.16073.43042.77412.77412.08252.0825
N43.50632.62201.16074.51263.60373.60373.14483.1448
H51.09462.16973.43044.51261.77671.77672.50812.5081
H61.09392.18342.77413.60371.77671.77332.53663.0916
H71.09392.18342.77413.60371.77671.77333.09162.5366
H82.18231.09752.08253.14482.50812.53663.09161.7616
H92.18231.09752.08253.14482.50813.09162.53661.7616

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 112.598 C1 C2 H8 110.533
C1 C2 H9 110.533 C2 C1 H5 109.712
C2 C1 H6 110.832 C2 C1 H7 110.832
C2 C3 N4 179.022 C3 C2 H8 108.103
C3 C2 H9 108.103 H5 C1 H6 108.551
H5 C1 H7 108.551 H6 C1 H7 108.294
H8 C2 H9 106.753
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.337      
2 C -0.235      
3 C -0.011      
4 N -0.100      
5 H 0.132      
6 H 0.129      
7 H 0.129      
8 H 0.147      
9 H 0.147      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.309 3.329 0.000 4.052
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.400 -3.825 0.000
y -3.825 -27.803 0.000
z 0.000 0.000 -23.979
Traceless
 xyz
x -1.509 -3.825 0.000
y -3.825 -2.114 0.000
z 0.000 0.000 3.623
Polar
3z2-r27.245
x2-y20.404
xy-3.825
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.144 1.340 0.000
y 1.340 6.615 0.000
z 0.000 0.000 4.648


<r2> (average value of r2) Å2
<r2> 88.553
(<r2>)1/2 9.410