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: TPSSh/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/6-31G*
 hartrees
Energy at 0K-170.839015
Energy at 298.15K-170.841369
HF Energy-170.839015
Nuclear repulsion energy89.780406
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 TPSSh/6-31G*
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' 3279 3146 4.22      
2 A' 3199 3069 1.87      
3 A' 3186 3057 1.80      
4 A' 2321 2227 7.27      
5 A' 1690 1621 0.56      
6 A' 1470 1411 4.41      
7 A' 1334 1280 0.29      
8 A' 1118 1073 3.35      
9 A' 889 853 1.18      
10 A' 572 549 0.00      
11 A' 233 224 2.54      
12 A" 1010 969 28.50      
13 A" 978 938 28.73      
14 A" 710 681 10.90      
15 A" 352 338 0.48      

Unscaled Zero Point Vibrational Energy (zpe) 11170.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 10717.0 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 TPSSh/6-31G*
ABC
1.68100 0.16411 0.14951

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.578 -0.536 0.000
N2 -1.077 -1.589 0.000
C3 0.000 0.778 0.000
H4 -0.709 1.602 0.000
C5 1.325 0.985 0.000
H6 2.036 0.165 0.000
H7 1.729 1.993 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 H7
C11.16511.43562.14202.43642.70573.4233
N21.16512.60043.21173.52103.57284.5503
C31.43562.60041.08691.34122.12602.1133
H42.14203.21171.08692.12553.09812.4694
C52.43643.52101.34122.12551.08551.0857
H62.70573.57282.12603.09811.08551.8538
H73.42334.55032.11332.46941.08571.8538

picture of acrylonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 115.549 C1 C3 C5 122.622
N2 C1 C3 178.342 C3 C5 H6 121.996
C3 C5 H7 120.741 H4 C3 C5 121.829
H6 C5 H7 117.263
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.339      
2 N -0.482      
3 C -0.136      
4 H 0.212      
5 C -0.321      
6 H 0.200      
7 H 0.190      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.970 3.357 0.000 3.892
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.353 2.081 0.000
y 2.081 6.427 0.000
z 0.000 0.000 2.175


<r2> (average value of r2) Å2
<r2> 78.445
(<r2>)1/2 8.857