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All results from a given calculation for C3H3N (acrylonitrile)

using model chemistry: MP2/CEP-121G*

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-121G*
 hartrees
Energy at 0K-28.397704
Energy at 298.15K-28.399964
HF Energy-27.857492
Nuclear repulsion energy45.481307
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-121G*
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' 3304 3148 3.48      
2 A' 3232 3080 1.74      
3 A' 3192 3041 0.68      
4 A' 2129 2028 2.30      
5 A' 1652 1574 4.93      
6 A' 1454 1385 3.65      
7 A' 1319 1257 0.27      
8 A' 1110 1058 3.61      
9 A' 871 830 0.88      
10 A' 555 528 0.14      
11 A' 222 211 2.03      
12 A" 992 945 41.45      
13 A" 906 863 39.00      
14 A" 675 643 8.32      
15 A" 321 305 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 10965.6 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 10448.0 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 MP2/CEP-121G*
ABC
1.60757 0.16182 0.14702

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.790 0.000
N2 -0.477 1.878 0.000
C3 0.596 -0.531 0.000
H4 1.682 -0.575 0.000
C5 -0.163 -1.650 0.000
H6 -1.248 -1.600 0.000
H7 0.306 -2.629 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 H7
C11.18851.44882.16632.44502.69583.4322
N21.18852.63733.26843.54213.56254.5747
C31.44882.63731.08711.35232.13152.1180
H42.16633.26841.08712.13553.10422.4721
C52.44503.54211.35232.13551.08601.0856
H62.69583.56252.13153.10421.08601.8638
H73.43224.57472.11802.47211.08561.8638

picture of acrylonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 116.635 C1 C3 C5 121.551
N2 C1 C3 179.367 C3 C5 H6 121.510
C3 C5 H7 120.238 H4 C3 C5 121.814
H6 C5 H7 118.251
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability