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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/Def2TZVPP
 hartrees
Energy at 0K-172.140120
Energy at 298.15K 
HF Energy-172.140120
Nuclear repulsion energy103.063287
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 B3LYPultrafine/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' 3118 3118 17.12 71.35 0.70 0.82
2 A' 3050 3050 18.93 74.12 0.02 0.04
3 A' 3045 3045 4.31 204.63 0.03 0.06
4 A' 2355 2355 10.13 79.05 0.21 0.35
5 A' 1507 1507 5.82 4.19 0.73 0.85
6 A' 1476 1476 5.26 10.28 0.69 0.82
7 A' 1422 1422 1.20 0.66 0.36 0.52
8 A' 1352 1352 3.15 3.24 0.48 0.65
9 A' 1095 1095 3.54 3.33 0.12 0.21
10 A' 1014 1014 0.31 5.62 0.38 0.55
11 A' 840 840 0.14 5.48 0.10 0.18
12 A' 553 553 0.81 1.78 0.21 0.35
13 A' 214 214 4.26 2.48 0.73 0.85
14 A" 3123 3123 16.32 26.60 0.75 0.86
15 A" 3076 3076 0.87 87.96 0.75 0.86
16 A" 1500 1500 7.44 7.71 0.75 0.86
17 A" 1292 1292 0.00 3.39 0.75 0.86
18 A" 1118 1118 0.33 0.07 0.75 0.86
19 A" 793 793 3.27 0.30 0.75 0.86
20 A" 395 395 0.37 2.06 0.75 0.86
21 A" 221 221 1.06 0.52 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16279.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16279.3 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 B3LYPultrafine/Def2TZVPP
ABC
0.94122 0.15660 0.14128

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.515 0.564 0.000
C2 0.000 0.807 0.000
C3 -0.771 -0.434 0.000
N4 -1.366 -1.418 0.000
H5 2.042 1.518 0.000
H6 1.820 0.003 0.882
H7 1.820 0.003 -0.882
H8 -0.295 1.388 0.876
H9 -0.295 1.388 -0.876

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53472.49453.49711.08951.08901.08902.17362.1736
C21.53471.46102.61112.16212.17642.17641.09191.0919
C32.49451.46101.15023.42362.77132.77132.07662.0766
N43.49712.61111.15024.49813.59793.59793.12843.1284
H51.08952.16213.42364.49811.76711.76712.49952.4995
H61.08902.17642.77133.59791.76711.76432.52803.0795
H71.08902.17642.77133.59791.76711.76433.07952.5280
H82.17361.09192.07663.12842.49952.52803.07951.7528
H92.17361.09192.07663.12842.49953.07952.52801.7528

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 112.727 C1 C2 H8 110.561
C1 C2 H9 110.561 C2 C1 H5 109.789
C2 C1 H6 110.958 C2 C1 H7 110.958
C2 C3 N4 179.303 C3 C2 H8 107.994
C3 C2 H9 107.994 H5 C1 H6 108.424
H5 C1 H7 108.424 H6 C1 H7 108.208
H8 C2 H9 106.773
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.238      
2 C -0.007      
3 C -0.254      
4 N 0.011      
5 H 0.090      
6 H 0.098      
7 H 0.098      
8 H 0.101      
9 H 0.101      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.343 3.381 0.000 4.114
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.541 -3.858 0.000
y -3.858 -27.975 0.000
z 0.000 0.000 -24.111
Traceless
 xyz
x -1.498 -3.858 0.000
y -3.858 -2.149 0.000
z 0.000 0.000 3.647
Polar
3z2-r27.294
x2-y20.434
xy-3.858
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.287 1.215 0.000
y 1.215 6.565 0.000
z 0.000 0.000 4.798


<r2> (average value of r2) Å2
<r2> 88.219
(<r2>)1/2 9.393