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

using model chemistry: B97D3/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-171.976830
Energy at 298.15K 
HF Energy-171.976830
Nuclear repulsion energy102.152798
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/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3086 3086 22.29 75.56 0.70 0.82
2 A' 3001 3001 25.07 99.78 0.02 0.03
3 A' 2996 2996 8.37 223.64 0.03 0.06
4 A' 2267 2267 9.17 102.38 0.17 0.29
5 A' 1453 1453 4.26 3.00 0.73 0.84
6 A' 1419 1419 4.59 8.66 0.66 0.80
7 A' 1368 1368 1.01 0.77 0.46 0.63
8 A' 1297 1297 3.61 3.55 0.41 0.58
9 A' 1061 1061 2.87 5.69 0.12 0.21
10 A' 998 998 0.18 4.49 0.41 0.58
11 A' 827 827 0.03 6.35 0.07 0.13
12 A' 530 530 0.73 1.66 0.11 0.20
13 A' 202 202 3.76 2.16 0.72 0.84
14 A" 3090 3090 22.04 29.11 0.75 0.86
15 A" 3036 3036 2.37 87.63 0.75 0.86
16 A" 1445 1445 6.42 5.23 0.75 0.86
17 A" 1248 1248 0.00 2.07 0.75 0.86
18 A" 1076 1076 0.50 0.20 0.75 0.86
19 A" 768 768 2.62 0.42 0.75 0.86
20 A" 370 370 0.15 1.18 0.75 0.86
21 A" 214 214 0.93 0.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15876.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15876.0 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 B97D3/aug-cc-pVDZ
ABC
0.92066 0.15454 0.13930

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.522 0.568 0.000
C2 0.000 0.816 0.000
C3 -0.774 -0.431 0.000
N4 -1.371 -1.437 0.000
H5 2.053 1.532 0.000
H6 1.825 -0.000 0.892
H7 1.825 -0.000 -0.892
H8 -0.296 1.403 0.886
H9 -0.296 1.403 -0.886

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.54232.50423.52041.10071.10011.10012.18862.1886
C21.54231.46782.63822.17412.18932.18931.10331.1033
C32.50421.46781.17053.44182.78152.78152.09162.0916
N43.52042.63821.17054.53253.61613.61613.16343.1634
H51.10072.17413.44184.53251.78781.78782.51432.5143
H61.10012.18932.78153.61611.78781.78432.54323.1034
H71.10012.18932.78153.61611.78781.78433.10342.5432
H82.18861.10332.09163.16342.51432.54323.10341.7728
H92.18861.10332.09163.16342.51433.10342.54321.7728

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 112.570 C1 C2 H8 110.533
C1 C2 H9 110.533 C2 C1 H5 109.557
C2 C1 H6 110.776 C2 C1 H7 110.776
C2 C3 N4 178.818 C3 C2 H8 108.042
C3 C2 H9 108.042 H5 C1 H6 108.650
H5 C1 H7 108.650 H6 C1 H7 108.374
H8 C2 H9 106.909
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.634      
2 C 0.640      
3 C -0.117      
4 N -0.272      
5 H -0.198      
6 H -0.173      
7 H -0.173      
8 H -0.170      
9 H -0.170      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.337 3.384 0.000 4.112
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.531 -3.836 0.000
y -3.836 -28.008 0.000
z 0.000 0.000 -24.127
Traceless
 xyz
x -1.464 -3.836 0.000
y -3.836 -2.179 0.000
z 0.000 0.000 3.643
Polar
3z2-r27.286
x2-y20.477
xy-3.836
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.967 1.304 0.000
y 1.304 7.204 0.000
z 0.000 0.000 5.295


<r2> (average value of r2) Å2
<r2> 89.254
(<r2>)1/2 9.447