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

using model chemistry: TPSSh/6-311G**

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/6-311G**
 hartrees
Energy at 0K-172.121768
Energy at 298.15K 
HF Energy-172.121768
Nuclear repulsion energy102.755689
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/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3120 3120 23.68 80.22 0.71 0.83
2 A' 3046 3046 23.66 57.94 0.04 0.07
3 A' 3044 3044 5.96 197.66 0.04 0.08
4 A' 2333 2333 7.81 68.66 0.26 0.41
5 A' 1520 1520 5.17 7.25 0.74 0.85
6 A' 1483 1483 4.93 12.87 0.72 0.84
7 A' 1423 1423 0.87 1.55 0.35 0.52
8 A' 1346 1346 2.93 4.25 0.54 0.70
9 A' 1092 1092 3.60 3.00 0.15 0.26
10 A' 1014 1014 0.31 5.90 0.42 0.59
11 A' 839 839 0.13 5.17 0.14 0.24
12 A' 546 546 0.98 2.02 0.32 0.49
13 A' 210 210 3.73 2.98 0.73 0.85
14 A" 3126 3126 23.92 29.74 0.75 0.86
15 A" 3079 3079 1.96 100.02 0.75 0.86
16 A" 1512 1512 7.10 11.67 0.75 0.86
17 A" 1292 1292 0.00 5.43 0.75 0.86
18 A" 1114 1114 0.49 0.07 0.75 0.86
19 A" 785 785 3.06 0.38 0.75 0.86
20 A" 392 392 0.12 3.08 0.75 0.86
21 A" 222 222 0.82 0.60 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16267.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16267.8 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 TPSSh/6-311G**
ABC
0.93310 0.15595 0.14063

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.519 0.563 0.000
C2 0.000 0.812 0.000
C3 -0.771 -0.432 0.000
N4 -1.369 -1.423 0.000
H5 2.047 1.520 0.000
H6 1.820 0.000 0.885
H7 1.820 0.000 -0.885
H8 -0.295 1.392 0.880
H9 -0.295 1.392 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53892.49713.50491.09261.09181.09182.17932.1793
C21.53891.46332.62062.16582.18032.18031.09461.0946
C32.49711.46331.15743.42802.77212.77212.08032.0803
N43.50492.62061.15744.50863.60233.60233.13893.1389
H51.09262.16583.42804.50861.77371.77372.50452.5045
H61.09182.18032.77213.60231.77371.77102.53133.0862
H71.09182.18032.77213.60231.77371.77103.08622.5313
H82.17931.09462.08033.13892.50452.53133.08621.7603
H92.17931.09462.08033.13892.50453.08622.53131.7603

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 112.540 C1 C2 H8 110.558
C1 C2 H9 110.558 C2 C1 H5 109.611
C2 C1 H6 110.808 C2 C1 H7 110.808
C2 C3 N4 179.251 C3 C2 H8 107.970
C3 C2 H9 107.970 H5 C1 H6 108.577
H5 C1 H7 108.577 H6 C1 H7 108.397
H8 C2 H9 107.039
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.301      
2 C -0.203      
3 C 0.097      
4 N -0.300      
5 H 0.123      
6 H 0.133      
7 H 0.133      
8 H 0.159      
9 H 0.159      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.271 3.274 0.000 3.984
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 5.753 1.245 0.000
y 1.245 6.148 0.000
z 0.000 0.000 4.288


<r2> (average value of r2) Å2
<r2> 88.276
(<r2>)1/2 9.396