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

using model chemistry: B97D3/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B97D3/6-31G
 hartrees
Energy at 0K-171.909454
Energy at 298.15K 
HF Energy-171.909454
Nuclear repulsion energy101.785507
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 B97D3/6-31G
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' 3100 3100 28.07 80.08 0.71 0.83
2 A' 3010 3010 26.04 106.13 0.01 0.02
3 A' 2997 2997 11.98 126.53 0.07 0.14
4 A' 2237 2237 7.28 59.19 0.30 0.46
5 A' 1525 1525 7.30 13.08 0.74 0.85
6 A' 1495 1495 6.93 22.42 0.69 0.81
7 A' 1435 1435 1.99 2.50 0.74 0.85
8 A' 1350 1350 1.49 9.73 0.66 0.80
9 A' 1096 1096 6.98 2.31 0.17 0.28
10 A' 1004 1004 0.18 6.73 0.40 0.57
11 A' 830 830 0.02 5.96 0.19 0.31
12 A' 537 537 1.81 2.18 0.35 0.52
13 A' 204 204 2.60 3.56 0.73 0.85
14 A" 3105 3105 28.37 33.59 0.75 0.86
15 A" 3038 3038 4.85 99.11 0.75 0.86
16 A" 1517 1517 8.48 22.66 0.75 0.86
17 A" 1291 1291 0.01 10.92 0.75 0.86
18 A" 1126 1126 0.75 0.07 0.75 0.86
19 A" 806 806 4.75 0.44 0.75 0.86
20 A" 372 372 0.02 3.96 0.75 0.86
21 A" 215 215 0.65 0.76 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16144.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16144.7 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 B97D3/6-31G
ABC
0.91435 0.15338 0.13817

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.529 0.566 0.000
C2 0.000 0.819 0.000
C3 -0.778 -0.426 0.000
N4 -1.380 -1.443 0.000
H5 2.063 1.525 0.000
H6 1.830 -0.002 0.890
H7 1.830 -0.002 -0.890
H8 -0.284 1.413 0.883
H9 -0.284 1.413 -0.883

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.55032.51143.53581.09831.09781.09782.18802.1880
C21.55031.46802.65022.18092.19472.19471.10181.1018
C32.51141.46801.18233.44692.78852.78852.09922.0992
N43.53582.65021.18234.54663.63003.63003.18473.1847
H51.09832.18093.44694.54661.78321.78322.51052.5105
H61.09782.19472.78853.63001.78321.78022.54443.1014
H71.09782.19472.78853.63001.78321.78023.10142.5444
H82.18801.10182.09923.18472.51052.54443.10141.7666
H92.18801.10182.09923.18472.51053.10142.54441.7666

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 112.597 C1 C2 H8 110.026
C1 C2 H9 110.026 C2 C1 H5 109.681
C2 C1 H6 110.794 C2 C1 H7 110.794
C2 C3 N4 178.612 C3 C2 H8 108.708
C3 C2 H9 108.708 H5 C1 H6 108.581
H5 C1 H7 108.581 H6 C1 H7 108.345
H8 C2 H9 106.582
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.419      
2 C -0.329      
3 C 0.161      
4 N -0.300      
5 H 0.158      
6 H 0.168      
7 H 0.168      
8 H 0.197      
9 H 0.197      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.237 3.236 0.000 3.934
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.888 -3.855 0.000
y -3.855 -27.523 0.000
z 0.000 0.000 -23.644
Traceless
 xyz
x -1.304 -3.855 0.000
y -3.855 -2.257 0.000
z 0.000 0.000 3.562
Polar
3z2-r27.123
x2-y20.635
xy-3.855
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.263 1.353 0.000
y 1.353 5.939 0.000
z 0.000 0.000 3.934


<r2> (average value of r2) Å2
<r2> 89.453
(<r2>)1/2 9.458