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All results from a given calculation for C3H3N (acrylonitrile)

using model chemistry: B3LYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/3-21G
 hartrees
Energy at 0K-169.893885
Energy at 298.15K-169.896423
Nuclear repulsion energy89.997446
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 B3LYP/3-21G
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' 3264 3149 2.83      
2 A' 3183 3071 1.20      
3 A' 3175 3063 0.27      
4 A' 2335 2253 3.05      
5 A' 1685 1626 1.08      
6 A' 1499 1447 6.68      
7 A' 1364 1316 0.03      
8 A' 1151 1110 4.89      
9 A' 889 857 1.05      
10 A' 625 603 0.10      
11 A' 268 258 1.32      
12 A" 1029 993 9.17      
13 A" 1006 971 62.08      
14 A" 768 741 12.18      
15 A" 402 388 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 11320.8 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 10923.4 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 B3LYP/3-21G
ABC
1.69054 0.16487 0.15022

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.584 -0.528 0.000
N2 -1.067 -1.589 0.000
C3 0.000 0.770 0.000
H4 -0.698 1.603 0.000
C5 1.320 0.984 0.000
H6 2.032 0.167 0.000
H7 1.720 1.992 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 H7
C11.16621.42332.13352.43162.70703.4141
N21.16622.58953.21353.51023.56204.5376
C31.42332.58951.08631.33742.11982.1095
H42.13353.21351.08632.11053.08452.4486
C52.43163.51021.33742.11051.08401.0839
H62.70703.56202.11983.08451.08401.8515
H73.41414.53762.10952.44861.08391.8515

picture of acrylonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 115.801 C1 C3 C5 123.451
N2 C1 C3 179.795 C3 C5 H6 121.841
C3 C5 H7 120.848 H4 C3 C5 120.748
H6 C5 H7 117.311
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.288     0.464
2 N -0.473     -0.435
3 C -0.171     -0.330
4 H 0.244     0.206
5 C -0.324     -0.266
6 H 0.221     0.182
7 H 0.215     0.179


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.842 3.133 0.000 3.635
CHELPG        
AIM        
ESP 1.806 3.113 0.000 3.599


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.986 -2.592 0.000
y -2.592 -25.268 0.000
z 0.000 0.000 -24.570
Traceless
 xyz
x 2.933 -2.592 0.000
y -2.592 -1.990 0.000
z 0.000 0.000 -0.942
Polar
3z2-r2-1.885
x2-y23.282
xy-2.592
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.865 1.887 0.000
y 1.887 5.801 0.000
z 0.000 0.000 1.649


<r2> (average value of r2) Å2
<r2> 78.289
(<r2>)1/2 8.848