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

using model chemistry: B97D3/cc-pVTZ

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-pVTZ
 hartrees
Energy at 0K-172.018024
Energy at 298.15K 
HF Energy-172.018024
Nuclear repulsion energy102.727809
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-pVTZ
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' 3076 3033 21.11 77.51 0.70 0.83
2 A' 3002 2960 22.53 105.84 0.01 0.03
3 A' 2992 2950 7.35 177.38 0.04 0.08
4 A' 2280 2248 8.06 81.24 0.23 0.37
5 A' 1479 1459 4.72 5.00 0.74 0.85
6 A' 1444 1424 4.85 11.15 0.66 0.80
7 A' 1388 1369 0.93 0.74 0.46 0.63
8 A' 1317 1298 2.71 4.06 0.49 0.66
9 A' 1069 1054 3.26 3.28 0.12 0.21
10 A' 991 977 0.14 5.30 0.38 0.55
11 A' 825 814 0.02 5.45 0.10 0.18
12 A' 538 531 0.73 1.62 0.19 0.32
13 A' 204 201 3.56 2.40 0.73 0.85
14 A" 3080 3037 20.84 30.99 0.75 0.86
15 A" 3024 2981 2.27 91.48 0.75 0.86
16 A" 1470 1450 6.44 8.28 0.75 0.86
17 A" 1264 1246 0.00 3.20 0.75 0.86
18 A" 1090 1075 0.43 0.13 0.75 0.86
19 A" 777 766 3.23 0.35 0.75 0.86
20 A" 378 373 0.13 1.83 0.75 0.86
21 A" 213 210 0.91 0.44 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15951.3 cm-1
Scaled (by 0.986) Zero Point Vibrational Energy (zpe) 15727.9 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-pVTZ
ABC
0.92849 0.15623 0.14074

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

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 -0.427 0.000
N4 -1.367 -1.423 0.000
H5 2.052 1.514 0.000
H6 1.818 -0.006 0.885
H7 1.818 -0.006 -0.885
H8 -0.292 1.397 0.880
H9 -0.292 1.397 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53912.49533.50141.09331.09271.09272.18042.1804
C21.53911.46082.62032.16842.18112.18111.09641.0964
C32.49531.46081.15973.42792.77032.77032.08192.0819
N43.50142.62031.15974.50763.59663.59663.14413.1441
H51.09332.16843.42794.50761.77511.77512.50642.5064
H61.09272.18112.77033.59661.77511.77082.53433.0884
H71.09272.18112.77033.59661.77511.77083.08842.5343
H82.18041.09642.08193.14412.50642.53433.08841.7593
H92.18041.09642.08193.14412.50643.08842.53431.7593

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 112.541 C1 C2 H8 110.526
C1 C2 H9 110.526 C2 C1 H5 109.762
C2 C1 H6 110.795 C2 C1 H7 110.795
C2 C3 N4 178.835 C3 C2 H8 108.161
C3 C2 H9 108.161 H5 C1 H6 108.590
H5 C1 H7 108.590 H6 C1 H7 108.243
H8 C2 H9 106.711
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.238      
2 C -0.116      
3 C -0.099      
4 N -0.052      
5 H 0.090      
6 H 0.099      
7 H 0.099      
8 H 0.109      
9 H 0.109      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.275 3.275 0.000 3.988
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.182 -3.696 0.000
y -3.696 -27.550 0.000
z 0.000 0.000 -23.876
Traceless
 xyz
x -1.469 -3.696 0.000
y -3.696 -2.021 0.000
z 0.000 0.000 3.491
Polar
3z2-r26.981
x2-y20.368
xy-3.696
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.338 1.252 0.000
y 1.252 6.601 0.000
z 0.000 0.000 4.752


<r2> (average value of r2) Å2
<r2> 88.288
(<r2>)1/2 9.396