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

using model chemistry: B2PLYP/daug-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 B2PLYP/daug-cc-pVDZ
 hartrees
Energy at 0K-171.909413
Energy at 298.15K 
HF Energy-171.710935
Nuclear repulsion energy102.308247
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 B2PLYP/daug-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' 3153 3153 18.16 68.80 0.70 0.82
2 A' 3075 3075 8.67 94.87 0.07 0.14
3 A' 3068 3068 15.81 210.95 0.00 0.01
4 A' 2271 2271 3.28 82.16 0.15 0.26
5 A' 1492 1492 4.89 2.69 0.73 0.84
6 A' 1459 1459 4.81 8.22 0.70 0.82
7 A' 1404 1404 1.22 0.72 0.35 0.52
8 A' 1337 1337 4.03 2.61 0.39 0.56
9 A' 1091 1091 3.11 6.37 0.11 0.21
10 A' 1026 1026 0.56 4.13 0.47 0.64
11 A' 843 843 0.23 6.81 0.06 0.12
12 A' 536 536 0.69 1.37 0.13 0.24
13 A' 207 207 4.17 1.96 0.70 0.83
14 A" 3157 3157 17.13 22.93 0.75 0.86
15 A" 3117 3117 0.72 83.78 0.75 0.86
16 A" 1485 1485 7.01 5.24 0.75 0.86
17 A" 1282 1282 0.00 2.01 0.75 0.86
18 A" 1107 1107 0.47 0.12 0.75 0.86
19 A" 781 781 2.63 0.36 0.75 0.86
20 A" 377 377 0.31 1.19 0.75 0.86
21 A" 219 219 1.05 0.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16243.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16243.2 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 B2PLYP/daug-cc-pVDZ
ABC
0.92495 0.15485 0.13959

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.517 0.571 0.000
C2 0.000 0.818 0.000
C3 -0.771 -0.433 0.000
N4 -1.367 -1.440 0.000
H5 2.046 1.532 0.000
H6 1.821 0.006 0.889
H7 1.821 0.006 -0.889
H8 -0.298 1.399 0.883
H9 -0.298 1.399 -0.883

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53722.49923.51631.09671.09611.09612.18142.1814
C21.53721.47032.64002.16732.18272.18271.09821.0982
C32.49921.47031.16983.43532.77492.77492.08862.0886
N43.51632.64001.16984.52593.61133.61133.15983.1598
H51.09672.16733.43534.52591.78021.78022.50852.5085
H61.09612.18272.77493.61131.78021.77752.53513.0931
H71.09612.18272.77493.61131.78021.77753.09312.5351
H82.18141.09822.08863.15982.50852.53513.09311.7669
H92.18141.09822.08863.15982.50853.09312.53511.7669

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 112.385 C1 C2 H8 110.633
C1 C2 H9 110.633 C2 C1 H5 109.608
C2 C1 H6 110.857 C2 C1 H7 110.857
C2 C3 N4 178.987 C3 C2 H8 107.936
C3 C2 H9 107.936 H5 C1 H6 108.550
H5 C1 H7 108.550 H6 C1 H7 108.352
H8 C2 H9 107.117
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.218      
2 C -0.200      
3 C 0.820      
4 N -0.586      
5 H -0.361      
6 H -0.202      
7 H -0.202      
8 H -0.243      
9 H -0.243      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.321 3.393 0.000 4.111
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.807 -3.857 -0.006
y -3.857 -28.324 -0.004
z -0.006 -0.004 -24.372
Traceless
 xyz
x -1.459 -3.857 -0.006
y -3.857 -2.235 -0.004
z -0.006 -0.004 3.694
Polar
3z2-r27.387
x2-y20.517
xy-3.857
xz-0.006
yz-0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.704 1.163 0.000
y 1.163 6.915 -0.000
z 0.000 -0.000 5.202


<r2> (average value of r2) Å2
<r2> 89.237
(<r2>)1/2 9.447