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: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-170.751476
Energy at 298.15K-170.753853
Nuclear repulsion energy90.205034
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 B1B95/6-31G*
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' 3308 3141 2.10      
2 A' 3230 3066 1.03      
3 A' 3212 3050 0.53      
4 A' 2389 2268 8.52      
5 A' 1722 1635 0.37      
6 A' 1463 1389 6.18      
7 A' 1332 1264 0.34      
8 A' 1120 1063 3.95      
9 A' 899 854 0.98      
10 A' 579 549 0.04      
11 A' 236 224 2.72      
12 A" 1015 963 21.46      
13 A" 990 940 35.70      
14 A" 718 682 12.44      
15 A" 357 339 0.55      

Unscaled Zero Point Vibrational Energy (zpe) 11284.6 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 10712.5 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 B1B95/6-31G*
ABC
1.69171 0.16577 0.15098

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.578 -0.531 0.000
N2 -1.068 -1.582 0.000
C3 0.000 0.774 0.000
H4 -0.700 1.602 0.000
C5 1.317 0.979 0.000
H6 2.023 0.157 0.000
H7 1.719 1.984 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 H7
C11.15971.42682.13672.42292.69013.4063
N21.15972.58643.20533.49963.54664.5264
C31.42682.58641.08501.33322.11492.1027
H42.13673.20531.08502.11203.08322.4495
C52.42293.49961.33322.11201.08321.0830
H62.69013.54662.11493.08321.08321.8527
H73.40634.52642.10272.44951.08301.8527

picture of acrylonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 115.904 C1 C3 C5 122.731
N2 C1 C3 178.866 C3 C5 H6 121.801
C3 C5 H7 120.618 H4 C3 C5 121.365
H6 C5 H7 117.581
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.302      
2 N -0.450      
3 C -0.139      
4 H 0.214      
5 C -0.319      
6 H 0.201      
7 H 0.191      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.968 3.358 0.000 3.893
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.833 -2.675 0.000
y -2.675 -25.031 0.000
z 0.000 0.000 -24.170
Traceless
 xyz
x 2.768 -2.675 0.000
y -2.675 -2.030 0.000
z 0.000 0.000 -0.738
Polar
3z2-r2-1.475
x2-y23.198
xy-2.675
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.231 1.979 0.000
y 1.979 6.254 0.000
z 0.000 0.000 2.158


<r2> (average value of r2) Å2
<r2> 77.807
(<r2>)1/2 8.821