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

using model chemistry: TPSSh/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-172.134907
Energy at 298.15K 
HF Energy-172.134907
Nuclear repulsion energy102.930679
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/6-311+G(3df,2p)
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' 3112 3112 19.76 71.46 0.70 0.83
2 A' 3041 3041 20.11 94.00 0.02 0.04
3 A' 3037 3037 4.86 194.11 0.03 0.06
4 A' 2325 2325 9.89 92.57 0.17 0.29
5 A' 1516 1516 4.75 3.06 0.72 0.84
6 A' 1480 1480 5.18 8.06 0.69 0.82
7 A' 1421 1421 0.92 0.60 0.41 0.58
8 A' 1342 1342 3.26 3.47 0.42 0.59
9 A' 1090 1090 3.35 4.89 0.11 0.19
10 A' 1010 1010 0.22 5.26 0.38 0.55
11 A' 836 836 0.10 6.15 0.07 0.14
12 A' 544 544 0.80 1.55 0.15 0.26
13 A' 209 209 4.09 2.12 0.71 0.83
14 A" 3119 3119 18.85 25.23 0.75 0.86
15 A" 3071 3071 0.99 84.91 0.75 0.86
16 A" 1509 1509 6.87 5.30 0.75 0.86
17 A" 1288 1288 0.01 2.17 0.75 0.86
18 A" 1111 1111 0.46 0.10 0.75 0.86
19 A" 781 781 2.59 0.42 0.75 0.86
20 A" 389 389 0.27 1.44 0.75 0.86
21 A" 219 219 1.01 0.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16225.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16225.0 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/6-311+G(3df,2p)
ABC
0.93526 0.15653 0.14112

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.516 0.562 0.000
C2 0.000 0.811 0.000
C3 -0.770 -0.432 0.000
N4 -1.366 -1.420 0.000
H5 2.044 1.517 0.000
H6 1.817 -0.001 0.884
H7 1.817 -0.001 -0.884
H8 -0.295 1.390 0.879
H9 -0.295 1.390 -0.879

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53662.49303.49821.09081.09011.09012.17682.1768
C21.53661.46182.61622.16242.17732.17731.09301.0930
C32.49301.46181.15453.42272.76752.76752.07732.0773
N43.49822.61621.15454.50053.59543.59543.13303.1330
H51.09082.16243.42274.50051.77071.77072.50192.5019
H61.09012.17732.76753.59541.77071.76792.52853.0823
H71.09012.17732.76753.59541.77071.76793.08232.5285
H82.17681.09302.07733.13302.50192.52853.08231.7579
H92.17681.09302.07733.13302.50193.08232.52851.7579

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 112.473 C1 C2 H8 110.621
C1 C2 H9 110.621 C2 C1 H5 109.607
C2 C1 H6 110.832 C2 C1 H7 110.832
C2 C3 N4 179.281 C3 C2 H8 107.930
C3 C2 H9 107.930 H5 C1 H6 108.569
H5 C1 H7 108.569 H6 C1 H7 108.368
H8 C2 H9 107.059
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.344      
2 C 0.041      
3 C 0.823      
4 N -1.086      
5 H 0.093      
6 H 0.117      
7 H 0.117      
8 H 0.120      
9 H 0.120      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.367 3.400 0.000 4.143
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 6.657 1.230 0.000
y 1.230 6.837 0.000
z 0.000 0.000 5.062


<r2> (average value of r2) Å2
<r2> 88.180
(<r2>)1/2 9.390