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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31G**
 hartrees
Energy at 0K-172.075593
Energy at 298.15K 
HF Energy-172.075593
Nuclear repulsion energy102.562363
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/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' 3140 3017 18.50 74.02 0.72 0.84
2 A' 3063 2943 19.11 74.58 0.02 0.03
3 A' 3056 2936 5.88 142.85 0.06 0.11
4 A' 2370 2277 7.50 58.93 0.29 0.45
5 A' 1519 1460 4.79 10.55 0.74 0.85
6 A' 1484 1426 4.08 18.74 0.71 0.83
7 A' 1429 1373 0.71 2.57 0.70 0.82
8 A' 1355 1302 3.70 6.13 0.61 0.76
9 A' 1096 1053 4.37 2.84 0.15 0.25
10 A' 1018 978 0.30 5.68 0.47 0.63
11 A' 844 811 0.16 4.89 0.18 0.31
12 A' 548 526 1.02 1.86 0.39 0.57
13 A' 213 205 4.15 2.89 0.73 0.84
14 A" 3146 3023 18.09 31.60 0.75 0.86
15 A" 3093 2972 2.30 91.99 0.75 0.86
16 A" 1511 1452 6.25 18.90 0.75 0.86
17 A" 1291 1241 0.02 8.24 0.75 0.86
18 A" 1117 1073 0.29 0.18 0.75 0.86
19 A" 793 762 4.07 0.37 0.75 0.86
20 A" 396 380 0.38 3.43 0.75 0.86
21 A" 225 216 1.06 0.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16354.0 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 15712.9 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 B3LYPultrafine/6-31G**
ABC
0.93389 0.15511 0.13995

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.520 0.570 0.000
C2 0.000 0.812 0.000
C3 -0.771 -0.436 0.000
N4 -1.371 -1.430 0.000
H5 2.047 1.528 0.000
H6 1.826 0.007 0.885
H7 1.826 0.007 -0.885
H8 -0.296 1.395 0.879
H9 -0.296 1.395 -0.879

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53882.50183.51451.09341.09281.09282.18002.1800
C21.53881.46672.62752.16842.18312.18311.09601.0960
C32.50181.46671.16083.43462.77952.77952.08562.0856
N43.51452.62751.16084.51953.61483.61483.14733.1473
H51.09342.16843.43464.51951.77331.77332.50652.5065
H61.09282.18312.77953.61481.77331.77082.53593.0895
H71.09282.18312.77953.61481.77331.77083.08952.5359
H82.18001.09602.08563.14732.50652.53593.08951.7589
H92.18001.09602.08563.14732.50653.08952.53591.7589

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 112.671 C1 C2 H8 110.539
C1 C2 H9 110.539 C2 C1 H5 109.775
C2 C1 H6 110.966 C2 C1 H7 110.966
C2 C3 N4 179.361 C3 C2 H8 108.070
C3 C2 H9 108.070 H5 C1 H6 108.413
H5 C1 H7 108.413 H6 C1 H7 108.226
H8 C2 H9 106.726
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.319      
2 C -0.248      
3 C 0.334      
4 N -0.466      
5 H 0.120      
6 H 0.133      
7 H 0.133      
8 H 0.156      
9 H 0.156      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.231 3.223 0.000 3.920
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.759 -3.726 0.000
y -3.726 -27.286 0.000
z 0.000 0.000 -23.576
Traceless
 xyz
x -1.328 -3.726 0.000
y -3.726 -2.118 0.000
z 0.000 0.000 3.446
Polar
3z2-r26.893
x2-y20.527
xy-3.726
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.291 1.240 0.000
y 1.240 5.826 0.000
z 0.000 0.000 4.012


<r2> (average value of r2) Å2
<r2> 88.460
(<r2>)1/2 9.405