return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H3N (acrylonitrile)

using model chemistry: HF/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/STO-3G
 hartrees
Energy at 0K-167.627271
Energy at 298.15K-167.629717
Nuclear repulsion energy89.959264
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 HF/STO-3G
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' 3816 3116 3.48      
2 A' 3719 3037 11.35      
3 A' 3655 2985 59.74      
4 A' 2738 2235 7.99      
5 A' 2009 1640 1.56      
6 A' 1680 1372 3.10      
7 A' 1517 1238 3.01      
8 A' 1259 1028 2.87      
9 A' 971 793 1.95      
10 A' 654 534 0.68      
11 A' 270 220 2.62      
12 A" 1209 987 6.37      
13 A" 1177 961 15.48      
14 A" 831 679 6.50      
15 A" 394 322 1.39      

Unscaled Zero Point Vibrational Energy (zpe) 12949.0 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 10572.8 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 HF/STO-3G
ABC
1.69595 0.16379 0.14936

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.581 -0.551 0.000
N2 -1.043 -1.611 0.000
C3 0.000 0.789 0.000
H4 -0.714 1.606 0.000
C5 1.297 1.005 0.000
H6 2.019 0.198 0.000
H7 1.698 2.012 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 H7
C11.15651.46062.16092.43902.70563.4294
N21.15652.61713.23393.51003.55604.5427
C31.46062.61711.08481.31492.10392.0923
H42.16093.23391.08482.09883.07452.4460
C52.43903.51001.31492.09881.08341.0832
H62.70563.55602.10393.07451.08341.8421
H73.42944.54272.09232.44601.08321.8421

picture of acrylonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 115.396 C1 C3 C5 122.900
N2 C1 C3 179.919 C3 C5 H6 122.334
C3 C5 H7 121.193 H4 C3 C5 121.704
H6 C5 H7 116.473
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.069      
2 N -0.190      
3 C -0.054      
4 H 0.094      
5 C -0.093      
6 H 0.088      
7 H 0.086      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.603 2.792 0.000 3.219
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.214 -2.502 0.000
y -2.502 -24.494 0.000
z 0.000 0.000 -22.059
Traceless
 xyz
x 2.062 -2.502 0.000
y -2.502 -2.858 0.000
z 0.000 0.000 0.795
Polar
3z2-r21.591
x2-y23.280
xy-2.502
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.845 1.294 0.000
y 1.294 3.610 0.000
z 0.000 0.000 0.713


<r2> (average value of r2) Å2
<r2> 77.765
(<r2>)1/2 8.818