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

using model chemistry: B3LYPultrafine/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B3LYPultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-172.088059
Energy at 298.15K 
HF Energy-172.088059
Nuclear repulsion energy102.469266
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 B3LYPultrafine/aug-cc-pVDZ
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' 3127 3034 17.64 70.71 0.70 0.83
2 A' 3052 2962 10.91 55.05 0.13 0.23
3 A' 3049 2959 13.62 251.51 0.01 0.01
4 A' 2343 2274 10.75 94.62 0.17 0.29
5 A' 1478 1434 5.22 2.82 0.72 0.84
6 A' 1448 1405 4.95 8.48 0.69 0.81
7 A' 1397 1355 1.36 0.68 0.42 0.59
8 A' 1328 1289 3.88 3.17 0.39 0.56
9 A' 1084 1051 3.21 5.51 0.12 0.22
10 A' 1018 987 0.43 4.52 0.42 0.59
11 A' 840 815 0.18 6.08 0.07 0.14
12 A' 541 525 0.83 1.59 0.13 0.23
13 A' 210 204 4.31 2.12 0.72 0.84
14 A" 3132 3040 16.96 25.05 0.75 0.86
15 A" 3089 2998 0.86 86.07 0.75 0.86
16 A" 1470 1427 7.21 5.36 0.75 0.86
17 A" 1272 1235 0.00 2.08 0.75 0.86
18 A" 1100 1067 0.42 0.13 0.75 0.86
19 A" 781 758 2.98 0.42 0.75 0.86
20 A" 382 371 0.35 1.32 0.75 0.86
21 A" 220 213 1.06 0.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16179.3 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 15700.4 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 B3LYPultrafine/aug-cc-pVDZ
ABC
0.93215 0.15493 0.13984

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.520 0.571 0.000
C2 0.000 0.812 0.000
C3 -0.772 -0.436 0.000
N4 -1.370 -1.431 0.000
H5 2.045 1.535 0.000
H6 1.827 0.007 0.889
H7 1.827 0.007 -0.889
H8 -0.299 1.394 0.884
H9 -0.299 1.394 -0.884

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53852.50313.51571.09781.09711.09712.18252.1825
C21.53851.46782.62862.16912.18562.18561.09951.0995
C32.50311.46781.16093.43822.78242.78242.08702.0870
N43.51572.62861.16094.52353.61693.61693.14823.1482
H51.09782.16913.43824.52351.78121.78122.50862.5086
H61.09712.18562.78243.61691.78121.77882.53793.0960
H71.09712.18562.78243.61691.78121.77883.09602.5379
H82.18251.09952.08703.14822.50862.53793.09601.7677
H92.18251.09952.08703.14822.50863.09602.53791.7677

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 112.717 C1 C2 H8 110.547
C1 C2 H9 110.547 C2 C1 H5 109.597
C2 C1 H6 110.934 C2 C1 H7 110.934
C2 C3 N4 179.302 C3 C2 H8 107.904
C3 C2 H9 107.904 H5 C1 H6 108.493
H5 C1 H7 108.493 H6 C1 H7 108.319
H8 C2 H9 107.003
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.832      
2 C 0.816      
3 C -0.179      
4 N -0.210      
5 H -0.264      
6 H -0.243      
7 H -0.243      
8 H -0.254      
9 H -0.254      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.364 3.429 0.000 4.165
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.731 -3.913 0.000
y -3.913 -28.206 0.000
z 0.000 0.000 -24.235
Traceless
 xyz
x -1.511 -3.913 0.000
y -3.913 -2.223 0.000
z 0.000 0.000 3.734
Polar
3z2-r27.468
x2-y20.475
xy-3.913
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.746 1.226 0.000
y 1.226 6.962 0.000
z 0.000 0.000 5.173


<r2> (average value of r2) Å2
<r2> 89.080
(<r2>)1/2 9.438