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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-171.960796
Energy at 298.15K 
HF Energy-171.960796
Nuclear repulsion energy102.229669
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' 3098 3098 22.09 78.72 0.72 0.84
2 A' 3015 3015 23.39 89.36 0.01 0.03
3 A' 3002 3002 9.09 141.20 0.06 0.11
4 A' 2292 2292 7.07 64.00 0.29 0.45
5 A' 1492 1492 4.29 11.18 0.74 0.85
6 A' 1454 1454 3.88 18.83 0.69 0.82
7 A' 1398 1398 0.61 2.77 0.71 0.83
8 A' 1322 1322 3.37 7.09 0.62 0.77
9 A' 1072 1072 4.13 2.72 0.13 0.23
10 A' 997 997 0.10 5.31 0.46 0.63
11 A' 830 830 0.02 5.06 0.17 0.30
12 A' 536 536 0.93 1.83 0.36 0.53
13 A' 205 205 3.67 2.96 0.73 0.84
14 A" 3104 3104 21.82 34.76 0.75 0.86
15 A" 3042 3042 3.84 94.82 0.75 0.86
16 A" 1483 1483 5.90 19.16 0.75 0.86
17 A" 1265 1265 0.02 8.22 0.75 0.86
18 A" 1092 1092 0.32 0.20 0.75 0.86
19 A" 779 779 4.11 0.37 0.75 0.86
20 A" 383 383 0.18 3.25 0.75 0.86
21 A" 219 219 0.95 0.61 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16038.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16038.9 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
0.92235 0.15465 0.13936

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 1.523 0.566 0.000
C2 0.000 0.816 0.000
C3 -0.774 -0.430 0.000
N4 -1.373 -1.435 0.000
H5 2.055 1.525 0.000
H6 1.824 -0.001 0.888
H7 1.824 -0.001 -0.888
H8 -0.294 1.404 0.882
H9 -0.294 1.404 -0.882

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.54302.50343.52001.09681.09621.09622.18642.1864
C21.54301.46712.63722.17402.18732.18731.10011.1001
C32.50341.46711.17023.43902.77922.77922.09092.0909
N43.52002.63721.17024.52943.61503.61503.16293.1629
H51.09682.17403.43904.52941.78061.78062.51242.5124
H61.09622.18732.77923.61501.78061.77702.54143.0975
H71.09622.18732.77923.61501.78061.77703.09752.5414
H82.18641.10012.09093.16292.51242.54143.09751.7647
H92.18641.10012.09093.16292.51243.09752.54141.7647

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 112.514 C1 C2 H8 110.502
C1 C2 H9 110.502 C2 C1 H5 109.726
C2 C1 H6 110.804 C2 C1 H7 110.804
C2 C3 N4 178.937 C3 C2 H8 108.224
C3 C2 H9 108.224 H5 C1 H6 108.576
H5 C1 H7 108.576 H6 C1 H7 108.289
H8 C2 H9 106.662
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 -0.338      
2 C -0.268      
3 C 0.337      
4 N -0.464      
5 H 0.127      
6 H 0.140      
7 H 0.140      
8 H 0.163      
9 H 0.163      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.217 3.195 0.000 3.889
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.608 -3.652 0.000
y -3.652 -27.095 0.000
z 0.000 0.000 -23.486
Traceless
 xyz
x -1.318 -3.652 0.000
y -3.652 -2.048 0.000
z 0.000 0.000 3.366
Polar
3z2-r26.732
x2-y20.487
xy-3.652
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.455 1.315 0.000
y 1.315 6.014 0.000
z 0.000 0.000 4.078


<r2> (average value of r2) Å2
<r2> 88.676
(<r2>)1/2 9.417