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

using model chemistry: wB97X-D/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at wB97X-D/6-31G**
 hartrees
Energy at 0K-172.013305
Energy at 298.15K 
HF Energy-172.013305
Nuclear repulsion energy102.808519
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 wB97X-D/6-31G**
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' 3172 3172 16.97 74.15 0.71 0.83
2 A' 3088 3088 8.28 81.57 0.11 0.19
3 A' 3082 3082 15.74 131.77 0.01 0.02
4 A' 2403 2403 8.72 55.08 0.30 0.46
5 A' 1523 1523 6.00 11.19 0.74 0.85
6 A' 1491 1491 5.46 17.12 0.72 0.84
7 A' 1438 1438 1.92 2.58 0.64 0.78
8 A' 1365 1365 3.08 4.71 0.60 0.75
9 A' 1106 1106 5.08 3.37 0.17 0.29
10 A' 1035 1035 0.78 5.47 0.49 0.66
11 A' 854 854 0.19 4.95 0.18 0.30
12 A' 554 554 1.03 1.99 0.43 0.60
13 A' 213 213 4.33 2.97 0.73 0.84
14 A" 3176 3176 16.18 27.51 0.75 0.86
15 A" 3135 3135 1.10 95.29 0.75 0.86
16 A" 1516 1516 7.80 19.03 0.75 0.86
17 A" 1299 1299 0.03 7.82 0.75 0.86
18 A" 1124 1124 0.33 0.11 0.75 0.86
19 A" 801 801 4.60 0.40 0.75 0.86
20 A" 398 398 0.37 3.67 0.75 0.86
21 A" 223 223 1.05 0.60 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16497.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16497.5 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 wB97X-D/6-31G**
ABC
0.93407 0.15619 0.14084

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.514 0.566 0.000
C2 0.000 0.813 0.000
C3 -0.769 -0.434 0.000
N4 -1.365 -1.427 0.000
H5 2.043 1.522 0.000
H6 1.817 0.003 0.885
H7 1.817 0.003 -0.885
H8 -0.297 1.393 0.880
H9 -0.297 1.393 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53372.49223.50091.09241.09211.09212.17602.1760
C21.53371.46562.62292.16252.17722.17721.09441.0944
C32.49221.46561.15743.42552.76752.76752.08192.0819
N43.50092.62291.15744.50623.59833.59833.14033.1403
H51.09242.16253.42554.50621.77241.77242.50332.5033
H61.09212.17722.76753.59831.77241.77042.52933.0843
H71.09212.17722.76753.59831.77241.77043.08432.5293
H82.17601.09442.08193.14032.50332.52933.08431.7597
H92.17601.09442.08193.14032.50333.08432.52931.7597

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 112.372 C1 C2 H8 110.669
C1 C2 H9 110.669 C2 C1 H5 109.723
C2 C1 H6 110.904 C2 C1 H7 110.904
C2 C3 N4 179.344 C3 C2 H8 107.954
C3 C2 H9 107.954 H5 C1 H6 108.463
H5 C1 H7 108.463 H6 C1 H7 108.309
H8 C2 H9 107.018
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.377      
2 C -0.301      
3 C 0.325      
4 N -0.459      
5 H 0.142      
6 H 0.153      
7 H 0.153      
8 H 0.182      
9 H 0.182      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.262 3.286 0.000 3.989
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.686 -3.740 0.000
y -3.740 -27.181 0.000
z 0.000 0.000 -23.472
Traceless
 xyz
x -1.360 -3.740 0.000
y -3.740 -2.102 0.000
z 0.000 0.000 3.461
Polar
3z2-r26.923
x2-y20.495
xy-3.740
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.228 1.201 0.000
y 1.201 5.798 0.000
z 0.000 0.000 4.023


<r2> (average value of r2) Å2
<r2> 87.964
(<r2>)1/2 9.379