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

using model chemistry: TPSSh/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 TPSSh/6-31+G**
 hartrees
Energy at 0K-172.088675
Energy at 298.15K-172.093674
HF Energy-172.088675
Nuclear repulsion energy102.453629
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 TPSSh/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' 3144 3026 21.52      
2 A' 3064 2949 24.79      
3 A' 3063 2948 6.46      
4 A' 2329 2242 10.59      
5 A' 1525 1468 5.49      
6 A' 1489 1433 4.96      
7 A' 1430 1376 1.07      
8 A' 1348 1297 3.38      
9 A' 1094 1053 3.98      
10 A' 1016 978 0.33      
11 A' 838 807 0.17      
12 A' 540 520 1.22      
13 A' 207 199 3.67      
14 A" 3151 3033 20.35      
15 A" 3103 2986 1.51      
16 A" 1518 1461 7.60      
17 A" 1291 1243 0.01      
18 A" 1115 1073 0.52      
19 A" 786 756 2.72      
20 A" 386 372 0.05      
21 A" 218 209 0.81      

Unscaled Zero Point Vibrational Energy (zpe) 16326.6 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 15714.3 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 TPSSh/6-31+G**
ABC
0.93069 0.15490 0.13973

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.520 0.567 0.000
C2 0.000 0.812 0.000
C3 -0.781 -0.426 0.000
N4 -1.366 -1.434 0.000
H5 2.055 1.521 0.000
H6 1.832 0.004 0.884
H7 1.832 0.004 -0.884
H8 -0.297 1.398 0.878
H9 -0.297 1.398 -0.878

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53992.50643.51201.09371.09321.09322.18292.1829
C21.53991.46392.62892.17392.18832.18831.09681.0968
C32.50641.46391.16553.44012.79142.79142.08172.0817
N43.51202.62891.16554.52063.61573.61573.15223.1522
H51.09372.17393.44014.52061.76991.76992.51372.5137
H61.09322.18832.79143.61571.76991.76762.54473.0951
H71.09322.18832.79143.61571.76991.76763.09512.5447
H82.18291.09682.08173.15222.51372.54473.09511.7560
H92.18291.09682.08173.15222.51373.09512.54471.7560

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 113.089 C1 C2 H8 110.644
C1 C2 H9 110.644 C2 C1 H5 110.117
C2 C1 H6 111.292 C2 C1 H7 111.292
C2 C3 N4 177.870 C3 C2 H8 107.910
C3 C2 H9 107.910 H5 C1 H6 108.059
H5 C1 H7 108.059 H6 C1 H7 107.897
H8 C2 H9 106.364
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.481      
2 C -0.192      
3 C 0.197      
4 N -0.446      
5 H 0.169      
6 H 0.177      
7 H 0.177      
8 H 0.200      
9 H 0.200      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.359 3.425 0.000 4.159
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.044 1.349 0.000
y 1.349 6.594 0.000
z 0.000 0.000 4.550


<r2> (average value of r2) Å2
<r2> 88.927
(<r2>)1/2 9.430