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

using model chemistry: wB97X-D/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-29.814672
Energy at 298.15K 
HF Energy-29.814672
Nuclear repulsion energy55.230387
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/CEP-121G
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' 3147 3147 31.50 61.81 0.70 0.82
2 A' 3053 3053 12.91 139.95 0.06 0.11
3 A' 3036 3036 28.44 89.71 0.01 0.03
4 A' 2276 2276 11.80 64.02 0.21 0.35
5 A' 1536 1536 10.95 8.25 0.75 0.86
6 A' 1516 1516 10.33 17.62 0.73 0.85
7 A' 1453 1453 6.14 2.18 0.24 0.39
8 A' 1375 1375 2.14 3.89 0.68 0.81
9 A' 1115 1115 7.38 3.96 0.15 0.26
10 A' 1046 1046 2.70 8.06 0.49 0.66
11 A' 841 841 0.54 10.02 0.14 0.25
12 A' 544 544 2.02 3.01 0.34 0.50
13 A' 212 212 2.87 3.68 0.74 0.85
14 A" 3152 3152 32.33 19.00 0.75 0.86
15 A" 3109 3109 2.70 87.85 0.75 0.86
16 A" 1529 1529 11.23 15.30 0.75 0.86
17 A" 1303 1303 0.04 9.11 0.75 0.86
18 A" 1141 1141 1.03 0.04 0.75 0.86
19 A" 811 811 4.19 0.43 0.75 0.86
20 A" 382 382 0.05 4.72 0.75 0.86
21 A" 213 213 0.63 0.83 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16393.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16393.6 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/CEP-121G
ABC
0.91814 0.15279 0.13775

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.528 0.574 0.000
C2 0.000 0.824 0.000
C3 -0.775 -0.437 0.000
N4 -1.380 -1.447 0.000
H5 2.058 1.533 0.000
H6 1.833 0.010 0.887
H7 1.833 0.010 -0.887
H8 -0.292 1.406 0.882
H9 -0.292 1.406 -0.882

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.54852.51563.54131.09541.09491.09492.18702.1870
C21.54851.48082.65802.17632.19342.19341.09631.0963
C32.51561.48081.17723.45072.79102.79102.10012.1001
N43.54132.65801.17724.54953.63743.63743.17893.1789
H51.09542.17633.45074.54951.77711.77712.51292.5129
H61.09492.19342.79103.63741.77711.77482.54263.0978
H71.09492.19342.79103.63741.77711.77483.09782.5426
H82.18701.09632.10013.17892.51292.54263.09781.7643
H92.18701.09632.10013.17892.51293.09782.54261.7643

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 112.261 C1 C2 H8 110.394
C1 C2 H9 110.394 C2 C1 H5 109.609
C2 C1 H6 110.982 C2 C1 H7 110.982
C2 C3 N4 179.315 C3 C2 H8 108.232
C3 C2 H9 108.232 H5 C1 H6 108.452
H5 C1 H7 108.452 H6 C1 H7 108.288
H8 C2 H9 107.155
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.515      
2 C -0.308      
3 C -0.312      
4 N 0.187      
5 H 0.181      
6 H 0.181      
7 H 0.181      
8 H 0.202      
9 H 0.202      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.327 3.452 0.000 4.163
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.375 -4.052 0.000
y -4.052 -27.914 0.000
z 0.000 0.000 -23.811
Traceless
 xyz
x -1.512 -4.052 0.000
y -4.052 -2.321 0.000
z 0.000 0.000 3.833
Polar
3z2-r27.667
x2-y20.539
xy-4.052
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.455 1.248 0.000
y 1.248 6.166 0.000
z 0.000 0.000 4.279


<r2> (average value of r2) Å2
<r2> 73.567
(<r2>)1/2 8.577