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

using model chemistry: wB97X-D/6-311G*

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/6-311G*
 hartrees
Energy at 0K-172.045029
Energy at 298.15K 
HF Energy-172.045029
Nuclear repulsion energy103.094304
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/6-311G*
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' 3148 3148 22.53 76.53 0.70 0.83
2 A' 3077 3077 8.84 105.47 0.09 0.16
3 A' 3067 3067 20.61 120.70 0.01 0.02
4 A' 2397 2397 8.97 61.79 0.26 0.41
5 A' 1527 1527 8.20 7.48 0.74 0.85
6 A' 1496 1496 6.67 12.98 0.74 0.85
7 A' 1438 1438 3.18 2.19 0.28 0.44
8 A' 1370 1370 2.90 3.52 0.57 0.73
9 A' 1109 1109 4.99 3.06 0.16 0.28
10 A' 1035 1035 0.94 5.49 0.46 0.63
11 A' 852 852 0.27 4.75 0.15 0.25
12 A' 560 560 0.98 2.11 0.36 0.53
13 A' 216 216 4.16 2.94 0.73 0.84
14 A" 3152 3152 22.86 23.17 0.75 0.86
15 A" 3116 3116 0.91 101.40 0.75 0.86
16 A" 1521 1521 10.13 12.70 0.75 0.86
17 A" 1310 1310 0.05 5.76 0.75 0.86
18 A" 1131 1131 0.36 0.02 0.75 0.86
19 A" 801 801 4.26 0.41 0.75 0.86
20 A" 400 400 0.23 3.25 0.75 0.86
21 A" 223 223 0.86 0.61 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16471.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16471.8 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/6-311G*
ABC
0.93606 0.15719 0.14167

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.511 0.561 0.000
C2 0.000 0.811 0.000
C3 -0.770 -0.432 0.000
N4 -1.362 -1.418 0.000
H5 2.045 1.513 0.000
H6 1.815 -0.003 0.884
H7 1.815 -0.003 -0.884
H8 -0.295 1.392 0.878
H9 -0.295 1.392 -0.878

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53202.48783.48861.09171.09121.09122.17372.1737
C21.53201.46212.61182.16232.17652.17651.09341.0934
C32.48781.46211.14973.42162.76522.76522.07922.0792
N43.48862.61181.14974.49423.58843.58843.13073.1307
H51.09172.16233.42164.49421.76961.76962.50262.5026
H61.09122.17652.76523.58841.76961.76762.52933.0824
H71.09122.17652.76523.58841.76961.76763.08242.5293
H82.17371.09342.07923.13072.50262.52933.08241.7561
H92.17371.09342.07923.13072.50263.08242.52931.7561

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 112.364 C1 C2 H8 110.676
C1 C2 H9 110.676 C2 C1 H5 109.873
C2 C1 H6 111.027 C2 C1 H7 111.027
C2 C3 N4 179.256 C3 C2 H8 108.033
C3 C2 H9 108.033 H5 C1 H6 108.323
H5 C1 H7 108.323 H6 C1 H7 108.177
H8 C2 H9 106.848
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.644      
2 C -0.478      
3 C 0.120      
4 N -0.247      
5 H 0.234      
6 H 0.241      
7 H 0.241      
8 H 0.266      
9 H 0.266      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.266 3.315 0.000 4.016
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.221 -3.740 0.000
y -3.740 -27.521 0.000
z 0.000 0.000 -23.784
Traceless
 xyz
x -1.568 -3.740 0.000
y -3.740 -2.019 0.000
z 0.000 0.000 3.587
Polar
3z2-r27.173
x2-y20.300
xy-3.740
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.519 1.152 0.000
y 1.152 5.971 0.000
z 0.000 0.000 4.214


<r2> (average value of r2) Å2
<r2> 87.828
(<r2>)1/2 9.372