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

using model chemistry: B97D3/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B97D3/Def2TZVPP
 hartrees
Energy at 0K-172.023822
Energy at 298.15K 
HF Energy-172.023822
Nuclear repulsion energy102.724700
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 B97D3/Def2TZVPP
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' 3077 3035 19.83 75.03 0.70 0.82
2 A' 3002 2961 21.89 110.61 0.01 0.02
3 A' 2991 2950 7.10 178.92 0.04 0.08
4 A' 2280 2249 8.24 85.58 0.22 0.36
5 A' 1479 1458 4.94 4.57 0.74 0.85
6 A' 1444 1424 5.05 10.56 0.67 0.80
7 A' 1389 1370 0.97 0.70 0.41 0.58
8 A' 1317 1299 2.85 3.73 0.51 0.67
9 A' 1070 1055 3.32 3.42 0.11 0.21
10 A' 992 979 0.14 5.35 0.38 0.55
11 A' 827 815 0.02 5.73 0.10 0.18
12 A' 540 533 0.74 1.78 0.19 0.31
13 A' 206 203 3.70 2.56 0.74 0.85
14 A" 3081 3039 19.33 30.04 0.75 0.86
15 A" 3024 2983 1.88 88.80 0.75 0.86
16 A" 1470 1450 6.77 7.82 0.75 0.86
17 A" 1263 1246 0.00 3.41 0.75 0.86
18 A" 1091 1076 0.41 0.11 0.75 0.86
19 A" 777 767 3.21 0.31 0.75 0.86
20 A" 381 376 0.16 1.92 0.75 0.86
21 A" 214 211 0.95 0.53 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15956.8 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 15738.2 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 B97D3/Def2TZVPP
ABC
0.92857 0.15621 0.14073

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.518 0.560 0.000
C2 0.000 0.812 0.000
C3 -0.773 -0.428 0.000
N4 -1.367 -1.423 0.000
H5 2.051 1.515 0.000
H6 1.818 -0.006 0.886
H7 1.818 -0.006 -0.886
H8 -0.293 1.397 0.880
H9 -0.293 1.397 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53912.49543.50161.09351.09291.09292.18082.1808
C21.53911.46112.62042.16832.18132.18131.09661.0966
C32.49541.46111.15943.42812.77062.77062.08222.0822
N43.50162.62041.15944.50783.59703.59703.14403.1440
H51.09352.16833.42814.50781.77541.77542.50662.5066
H61.09292.18132.77063.59701.77541.77122.53473.0890
H71.09292.18132.77063.59701.77541.77123.08902.5347
H82.18081.09662.08223.14402.50662.53473.08901.7597
H92.18081.09662.08223.14402.50663.08902.53471.7597

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 112.536 C1 C2 H8 110.544
C1 C2 H9 110.544 C2 C1 H5 109.746
C2 C1 H6 110.803 C2 C1 H7 110.803
C2 C3 N4 178.866 C3 C2 H8 108.148
C3 C2 H9 108.148 H5 C1 H6 108.586
H5 C1 H7 108.586 H6 C1 H7 108.250
H8 C2 H9 106.705
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.163      
2 C 0.064      
3 C -0.242      
4 N -0.006      
5 H 0.062      
6 H 0.072      
7 H 0.072      
8 H 0.071      
9 H 0.071      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.316 3.330 0.000 4.056
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.326 -3.780 0.000
y -3.780 -27.731 0.000
z 0.000 0.000 -23.958
Traceless
 xyz
x -1.481 -3.780 0.000
y -3.780 -2.089 0.000
z 0.000 0.000 3.571
Polar
3z2-r27.142
x2-y20.405
xy-3.780
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.473 1.294 0.000
y 1.294 6.767 0.000
z 0.000 0.000 4.878


<r2> (average value of r2) Å2
<r2> 88.380
(<r2>)1/2 9.401