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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-28.158783
Energy at 298.15K-28.161022
HF Energy-27.768523
Nuclear repulsion energy44.761908
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' 3226 3148 13.11      
2 A' 3155 3079 3.83      
3 A' 3107 3033 3.47      
4 A' 2008 1960 7.98      
5 A' 1612 1573 8.28      
6 A' 1455 1420 1.42      
7 A' 1328 1296 0.15      
8 A' 1113 1086 4.14      
9 A' 841 821 0.87      
10 A' 546 533 0.54      
11 A' 220 214 1.61      
12 A" 977 954 46.86      
13 A" 880 858 39.15      
14 A" 677 660 4.45      
15 A" 305 298 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 10724.5 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 10467.1 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
1.59290 0.15548 0.14166

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 0.802 0.000
N2 -0.485 1.918 0.000
C3 0.598 -0.540 0.000
H4 1.691 -0.580 0.000
C5 -0.159 -1.684 0.000
H6 -1.251 -1.652 0.000
H7 0.323 -2.663 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 H7
C11.21711.46912.18362.49102.75433.4800
N21.21712.68623.31303.61683.65114.6519
C31.46912.68621.09281.37232.15822.1410
H42.18363.31301.09282.15403.13082.4916
C52.49103.61681.37232.15401.09251.0915
H62.75433.65112.15823.13081.09251.8712
H73.48004.65192.14102.49161.09151.8712

picture of acrylonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 116.155 C1 C3 C5 122.451
N2 C1 C3 179.469 C3 C5 H6 121.823
C3 C5 H7 120.256 H4 C3 C5 121.394
H6 C5 H7 117.921
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability