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

using model chemistry: PBEPBEultrafine/daug-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 PBEPBEultrafine/daug-cc-pVDZ
 hartrees
Energy at 0K-171.860448
Energy at 298.15K 
HF Energy-171.860448
Nuclear repulsion energy102.051652
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 PBEPBEultrafine/daug-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' 3075 3075 15.12 75.41 0.70 0.83
2 A' 2988 2988 19.09 100.08 0.02 0.03
3 A' 2981 2981 4.94 234.44 0.03 0.05
4 A' 2259 2259 9.45 105.83 0.16 0.28
5 A' 1429 1429 5.50 3.21 0.74 0.85
6 A' 1389 1389 6.03 8.99 0.65 0.79
7 A' 1341 1341 1.66 0.75 0.54 0.70
8 A' 1276 1276 2.86 3.31 0.43 0.60
9 A' 1049 1049 3.02 6.78 0.13 0.23
10 A' 1004 1004 0.39 2.50 0.56 0.72
11 A' 829 829 0.09 5.91 0.06 0.12
12 A' 526 526 0.89 1.51 0.13 0.22
13 A' 201 201 3.59 2.04 0.71 0.83
14 A" 3078 3078 14.13 31.05 0.75 0.86
15 A" 3022 3022 0.92 86.40 0.75 0.86
16 A" 1421 1421 7.61 5.46 0.75 0.86
17 A" 1226 1226 0.00 2.03 0.75 0.86
18 A" 1055 1055 0.54 0.23 0.75 0.86
19 A" 751 751 3.49 0.40 0.75 0.86
20 A" 369 369 0.09 1.06 0.75 0.86
21 A" 210 210 0.90 0.32 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15739.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15739.9 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 PBEPBEultrafine/daug-cc-pVDZ
ABC
0.92493 0.15404 0.13902

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.521 0.575 0.000
C2 0.000 0.813 0.000
C3 -0.771 -0.433 0.000
N4 -1.373 -1.441 0.000
H5 2.050 1.544 0.000
H6 1.832 0.007 0.894
H7 1.832 0.007 -0.894
H8 -0.303 1.401 0.888
H9 -0.303 1.401 -0.888

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.54002.50453.52681.10421.10351.10352.19052.1905
C21.54001.46582.63932.17612.19182.19181.10711.1071
C32.50451.46581.17363.44502.78732.78732.09102.0910
N43.52682.63931.17364.54133.62833.62833.16393.1639
H51.10422.17613.44504.54131.79161.79162.51832.5183
H61.10352.19182.78733.62831.79161.78832.54903.1103
H71.10352.19182.78733.62831.79161.78833.11032.5490
H82.19051.10712.09103.16392.51832.54903.11031.7763
H92.19051.10712.09103.16392.51833.11032.54901.7763

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 112.839 C1 C2 H8 110.624
C1 C2 H9 110.624 C2 C1 H5 109.665
C2 C1 H6 110.942 C2 C1 H7 110.942
C2 C3 N4 179.071 C3 C2 H8 107.910
C3 C2 H9 107.910 H5 C1 H6 108.488
H5 C1 H7 108.488 H6 C1 H7 108.242
H8 C2 H9 106.688
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.141      
2 C -0.538      
3 C 1.309      
4 N -0.756      
5 H -0.364      
6 H -0.155      
7 H -0.155      
8 H -0.241      
9 H -0.241      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.331 3.380 0.000 4.106
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.610 -3.800 0.000
y -3.800 -28.085 0.000
z 0.000 0.000 -24.270
Traceless
 xyz
x -1.433 -3.800 0.000
y -3.800 -2.145 0.000
z 0.000 0.000 3.577
Polar
3z2-r27.155
x2-y20.475
xy-3.800
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.070 1.292 0.000
y 1.292 7.288 0.000
z 0.000 0.000 5.402


<r2> (average value of r2) Å2
<r2> 89.486
(<r2>)1/2 9.460