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

using model chemistry: wB97X-D/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-171.975172
Energy at 298.15K 
HF Energy-171.975172
Nuclear repulsion energy102.077523
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/LANL2DZ
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' 3186 3186 33.70 63.55 0.70 0.82
2 A' 3103 3103 11.81 144.68 0.05 0.10
3 A' 3083 3083 28.17 117.40 0.01 0.02
4 A' 2323 2323 10.48 61.93 0.22 0.36
5 A' 1544 1544 12.33 9.27 0.75 0.85
6 A' 1523 1523 13.47 13.41 0.75 0.85
7 A' 1464 1464 9.08 2.02 0.11 0.21
8 A' 1382 1382 2.57 4.66 0.70 0.83
9 A' 1124 1124 10.11 4.71 0.24 0.39
10 A' 1057 1057 2.47 9.76 0.41 0.58
11 A' 853 853 0.41 7.55 0.18 0.30
12 A' 555 555 2.66 2.86 0.41 0.59
13 A' 218 218 2.58 3.83 0.73 0.85
14 A" 3193 3193 37.34 15.72 0.75 0.86
15 A" 3159 3159 1.43 89.30 0.75 0.86
16 A" 1538 1538 13.50 14.81 0.75 0.86
17 A" 1310 1310 0.01 11.29 0.75 0.86
18 A" 1148 1148 1.66 0.06 0.75 0.86
19 A" 821 821 5.82 0.20 0.75 0.86
20 A" 397 397 0.19 4.96 0.75 0.86
21 A" 221 221 0.65 0.88 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16600.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16600.3 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 wB97X-D/LANL2DZ
ABC
0.92372 0.15383 0.13871

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.524 0.570 0.000
C2 0.000 0.821 0.000
C3 -0.771 -0.434 0.000
N4 -1.378 -1.441 0.000
H5 2.054 1.527 0.000
H6 1.826 0.006 0.886
H7 1.826 0.006 -0.886
H8 -0.290 1.402 0.882
H9 -0.290 1.402 -0.882

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.54412.50473.53011.09391.09331.09332.18122.1812
C21.54411.47322.64852.17182.18732.18731.09481.0948
C32.50471.47321.17533.43892.77912.77912.09292.0929
N43.53012.64851.17534.53693.62543.62543.16893.1689
H51.09392.17183.43894.53691.77501.77502.50722.5072
H61.09332.18732.77913.62541.77501.77272.53483.0904
H71.09332.18732.77913.62541.77501.77273.09042.5348
H82.18121.09482.09293.16892.50722.53483.09041.7632
H92.18121.09482.09293.16892.50723.09042.53481.7632

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 112.197 C1 C2 H8 110.332
C1 C2 H9 110.332 C2 C1 H5 109.645
C2 C1 H6 110.905 C2 C1 H7 110.905
C2 C3 N4 179.540 C3 C2 H8 108.273
C3 C2 H9 108.273 H5 C1 H6 108.490
H5 C1 H7 108.490 H6 C1 H7 108.335
H8 C2 H9 107.274
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.604      
2 C -0.377      
3 C -0.114      
4 N -0.046      
5 H 0.216      
6 H 0.220      
7 H 0.220      
8 H 0.242      
9 H 0.242      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.346 3.437 0.000 4.161
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.157 -4.035 0.000
y -4.035 -27.672 0.000
z 0.000 0.000 -23.643
Traceless
 xyz
x -1.500 -4.035 0.000
y -4.035 -2.272 0.000
z 0.000 0.000 3.771
Polar
3z2-r27.542
x2-y20.515
xy-4.035
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.122 1.241 0.000
y 1.241 5.772 0.000
z 0.000 0.000 3.907


<r2> (average value of r2) Å2
<r2> 89.221
(<r2>)1/2 9.446