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

using model chemistry: B3LYP/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B3LYP/aug-cc-pVTZ
 hartrees
Energy at 0K-172.136635
Energy at 298.15K 
HF Energy-172.136635
Nuclear repulsion energy103.075879
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 B3LYP/aug-cc-pVTZ
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' 3114 3012 16.79 69.28 0.70 0.82
2 A' 3047 2947 18.55 83.40 0.02 0.04
3 A' 3042 2943 4.28 222.50 0.03 0.05
4 A' 2352 2275 11.59 96.23 0.16 0.27
5 A' 1506 1457 5.55 2.74 0.72 0.84
6 A' 1475 1427 5.28 8.28 0.67 0.80
7 A' 1420 1374 1.19 0.40 0.56 0.72
8 A' 1351 1307 3.33 3.35 0.41 0.58
9 A' 1094 1059 3.49 4.39 0.11 0.20
10 A' 1012 979 0.27 5.25 0.37 0.54
11 A' 839 811 0.14 5.92 0.07 0.14
12 A' 550 533 0.82 1.52 0.13 0.23
13 A' 214 207 4.50 2.00 0.71 0.83
14 A" 3119 3017 15.78 25.17 0.75 0.86
15 A" 3072 2972 0.71 83.77 0.75 0.86
16 A" 1499 1450 7.40 5.01 0.75 0.86
17 A" 1292 1250 0.00 2.00 0.75 0.86
18 A" 1117 1081 0.35 0.10 0.75 0.86
19 A" 792 766 3.30 0.40 0.75 0.86
20 A" 392 379 0.50 1.28 0.75 0.86
21 A" 219 212 1.11 0.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16257.2 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 15728.8 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 B3LYP/aug-cc-pVTZ
ABC
0.94124 0.15665 0.14131

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.515 0.564 0.000
C2 0.000 0.807 0.000
C3 -0.771 -0.433 0.000
N4 -1.366 -1.418 0.000
H5 2.042 1.518 0.000
H6 1.820 0.003 0.882
H7 1.820 0.003 -0.882
H8 -0.295 1.387 0.876
H9 -0.295 1.387 -0.876

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53482.49433.49671.08931.08871.08872.17332.1733
C21.53481.46072.61072.16172.17622.17621.09161.0916
C32.49431.46071.15013.42302.77092.77092.07612.0761
N43.49672.61071.15014.49733.59733.59733.12793.1279
H51.08932.16173.42304.49731.76701.76702.49902.4990
H61.08872.17622.77093.59731.76701.76412.52753.0790
H71.08872.17622.77093.59731.76701.76413.07902.5275
H82.17331.09162.07613.12792.49902.52753.07901.7528
H92.17331.09162.07613.12792.49903.07902.52751.7528

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 112.721 C1 C2 H8 110.552
C1 C2 H9 110.552 C2 C1 H5 109.767
C2 C1 H6 110.950 C2 C1 H7 110.950
C2 C3 N4 179.294 C3 C2 H8 107.991
C3 C2 H9 107.991 H5 C1 H6 108.437
H5 C1 H7 108.437 H6 C1 H7 108.220
H8 C2 H9 106.809
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.660      
2 C -0.015      
3 C 0.141      
4 N -0.472      
5 H 0.199      
6 H 0.212      
7 H 0.212      
8 H 0.192      
9 H 0.192      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.367 3.414 0.000 4.154
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.616 -3.905 0.000
y -3.905 -28.078 0.000
z 0.000 0.000 -24.141
Traceless
 xyz
x -1.506 -3.905 0.000
y -3.905 -2.200 0.000
z 0.000 0.000 3.706
Polar
3z2-r27.412
x2-y20.463
xy-3.905
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.702 1.178 0.000
y 1.178 6.868 0.000
z 0.000 0.000 5.154


<r2> (average value of r2) Å2
<r2> 88.243
(<r2>)1/2 9.394