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

using model chemistry: HSEh1PBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-171.882629
Energy at 298.15K 
HF Energy-171.882629
Nuclear repulsion energy102.861377
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 HSEh1PBE/6-31+G**
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' 3167 3024 14.86 81.56 0.70 0.83
2 A' 3081 2941 14.19 17.12 0.49 0.66
3 A' 3078 2939 9.83 249.63 0.01 0.03
4 A' 2384 2277 13.36 87.70 0.20 0.34
5 A' 1507 1439 7.80 6.08 0.72 0.84
6 A' 1472 1406 6.83 11.87 0.74 0.85
7 A' 1420 1356 2.88 2.21 0.36 0.53
8 A' 1350 1289 2.99 3.80 0.62 0.77
9 A' 1098 1049 4.68 4.63 0.14 0.24
10 A' 1037 990 0.69 4.97 0.49 0.66
11 A' 856 817 0.04 4.84 0.13 0.23
12 A' 552 527 1.15 2.40 0.33 0.50
13 A' 212 202 3.95 3.36 0.74 0.85
14 A" 3173 3029 13.25 30.01 0.75 0.86
15 A" 3125 2983 0.50 93.20 0.75 0.86
16 A" 1500 1433 10.03 11.11 0.75 0.86
17 A" 1287 1229 0.02 4.99 0.75 0.86
18 A" 1112 1062 0.52 0.07 0.75 0.86
19 A" 790 754 4.04 0.43 0.75 0.86
20 A" 396 378 0.11 3.30 0.75 0.86
21 A" 225 215 0.86 0.80 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16410.6 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 15668.9 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 HSEh1PBE/6-31+G**
ABC
0.93737 0.15638 0.14106

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.512 0.568 0.000
C2 0.000 0.810 0.000
C3 -0.766 -0.433 0.000
N4 -1.364 -1.427 0.000
H5 2.040 1.525 0.000
H6 1.818 0.005 0.885
H7 1.818 0.005 -0.885
H8 -0.300 1.391 0.880
H9 -0.300 1.391 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53092.48823.49961.09331.09271.09272.17512.1751
C21.53091.46062.62022.16162.17622.17621.09571.0957
C32.48821.46061.15973.42192.76642.76642.07782.0778
N43.49962.62021.15974.50553.59943.59943.13763.1376
H51.09332.16163.42194.50551.77281.77282.50322.5032
H61.09272.17622.76643.59941.77281.77052.53023.0850
H71.09272.17622.76643.59941.77281.77053.08502.5302
H82.17511.09572.07783.13762.50322.53023.08501.7599
H92.17511.09572.07783.13762.50323.08502.53021.7599

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 112.534 C1 C2 H8 110.721
C1 C2 H9 110.721 C2 C1 H5 109.790
C2 C1 H6 110.985 C2 C1 H7 110.985
C2 C3 N4 179.357 C3 C2 H8 107.893
C3 C2 H9 107.893 H5 C1 H6 108.388
H5 C1 H7 108.388 H6 C1 H7 108.222
H8 C2 H9 106.853
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.517      
2 C -0.224      
3 C 0.241      
4 N -0.478      
5 H 0.179      
6 H 0.188      
7 H 0.188      
8 H 0.212      
9 H 0.212      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.361 3.447 0.000 4.179
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.448 -3.888 0.000
y -3.888 -27.907 0.000
z 0.000 0.000 -24.047
Traceless
 xyz
x -1.472 -3.888 0.000
y -3.888 -2.159 0.000
z 0.000 0.000 3.631
Polar
3z2-r27.261
x2-y20.458
xy-3.888
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.937 1.301 0.000
y 1.301 6.497 0.000
z 0.000 0.000 4.517


<r2> (average value of r2) Å2
<r2> 88.294
(<r2>)1/2 9.396