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All results from a given calculation for C3H3N (acrylonitrile)

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-28.347875
Energy at 298.15K-28.350140
HF Energy-27.839114
Nuclear repulsion energy45.023377
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 MP2/CEP-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' 3318 3150 7.12      
2 A' 3248 3084 2.90      
3 A' 3205 3043 2.18      
4 A' 2163 2054 1.11      
5 A' 1674 1589 4.33      
6 A' 1451 1377 3.34      
7 A' 1315 1248 0.33      
8 A' 1101 1045 4.09      
9 A' 880 835 0.74      
10 A' 547 520 0.23      
11 A' 219 208 1.84      
12 A" 1008 957 50.57      
13 A" 920 873 39.48      
14 A" 696 660 10.70      
15 A" 330 314 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 11036.8 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 10478.4 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 MP2/CEP-31G*
ABC
1.55088 0.15916 0.14434

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.796 0.000
N2 -0.501 1.890 0.000
C3 0.612 -0.529 0.000
H4 1.705 -0.572 0.000
C5 -0.157 -1.666 0.000
H6 -1.250 -1.615 0.000
H7 0.322 -2.651 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 H7
C11.20291.45962.18632.46722.71583.4621
N21.20292.66243.30573.57243.58404.6147
C31.45962.66241.09401.37272.15512.1416
H42.18633.30571.09402.15963.13322.4965
C52.46723.57241.37272.15961.09351.0953
H62.71583.58402.15513.13321.09351.8824
H73.46214.61472.14162.49651.09531.8824

picture of acrylonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 117.055 C1 C3 C5 121.145
N2 C1 C3 179.821 C3 C5 H6 121.401
C3 C5 H7 119.969 H4 C3 C5 121.800
H6 C5 H7 118.630
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability