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

using model chemistry: B97D3/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-171.965406
Energy at 298.15K 
HF Energy-171.965406
Nuclear repulsion energy102.085972
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/cc-pVDZ
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' 3088 3062 19.55 85.49 0.71 0.83
2 A' 3000 2975 23.21 116.87 0.01 0.02
3 A' 2991 2966 9.91 146.01 0.06 0.11
4 A' 2284 2265 7.13 67.46 0.26 0.42
5 A' 1454 1441 4.06 8.82 0.74 0.85
6 A' 1417 1405 3.78 15.99 0.70 0.82
7 A' 1371 1360 0.29 1.83 0.62 0.77
8 A' 1307 1296 4.56 4.61 0.56 0.72
9 A' 1064 1055 2.93 3.39 0.12 0.21
10 A' 1005 996 0.19 4.84 0.48 0.65
11 A' 832 825 0.05 5.18 0.13 0.24
12 A' 535 530 0.85 1.54 0.29 0.45
13 A' 205 203 2.97 2.64 0.73 0.85
14 A" 3092 3065 18.80 37.81 0.75 0.86
15 A" 3031 3006 3.20 102.35 0.75 0.86
16 A" 1443 1430 5.75 15.11 0.75 0.86
17 A" 1252 1241 0.00 5.27 0.75 0.86
18 A" 1077 1067 0.63 0.21 0.75 0.86
19 A" 775 769 3.56 0.39 0.75 0.86
20 A" 383 379 0.03 2.41 0.75 0.86
21 A" 221 219 0.69 0.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15912.1 cm-1
Scaled (by 0.9915) Zero Point Vibrational Energy (zpe) 15776.8 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 B97D3/cc-pVDZ
ABC
0.91943 0.15447 0.13923

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.521 0.570 0.000
C2 0.000 0.816 0.000
C3 -0.774 -0.431 0.000
N4 -1.370 -1.439 0.000
H5 2.056 1.535 0.000
H6 1.827 -0.001 0.894
H7 1.827 -0.001 -0.894
H8 -0.300 1.406 0.887
H9 -0.300 1.406 -0.887

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.54072.50333.52051.10361.10341.10342.19142.1914
C21.54071.46782.63892.17822.19172.19171.10671.1067
C32.50331.46781.17133.44572.78332.78332.09432.0943
N43.52052.63891.17134.53713.61793.61793.16653.1665
H51.10362.17823.44574.53711.79131.79132.52122.5212
H61.10342.19172.78333.61791.79131.78712.55013.1103
H71.10342.19172.78333.61791.79131.78713.11032.5501
H82.19141.10672.09433.16652.52122.55013.11031.7741
H92.19141.10672.09433.16652.52123.11032.55011.7741

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 112.605 C1 C2 H8 110.667
C1 C2 H9 110.667 C2 C1 H5 109.823
C2 C1 H6 110.886 C2 C1 H7 110.886
C2 C3 N4 178.813 C3 C2 H8 108.057
C3 C2 H9 108.057 H5 C1 H6 108.509
H5 C1 H7 108.509 H6 C1 H7 108.152
H8 C2 H9 106.551
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.015      
2 C -0.007      
3 C -0.094      
4 N -0.126      
5 H 0.029      
6 H 0.044      
7 H 0.044      
8 H 0.063      
9 H 0.063      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.147 3.110 0.000 3.779
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.714 -3.459 0.000
y -3.459 -27.067 0.000
z 0.000 0.000 -23.675
Traceless
 xyz
x -1.342 -3.459 0.000
y -3.459 -1.873 0.000
z 0.000 0.000 3.215
Polar
3z2-r26.431
x2-y20.354
xy-3.459
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.713 1.247 0.000
y 1.247 6.127 0.000
z 0.000 0.000 4.242


<r2> (average value of r2) Å2
<r2> 88.859
(<r2>)1/2 9.427