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: CCSD/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 CCSD/6-31G*
 hartrees
Energy at 0K-170.321256
Energy at 298.15K-170.323589
HF Energy-169.764488
Nuclear repulsion energy89.570860
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 CCSD/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' 3291 3108 3.68      
2 A' 3229 3049 1.23      
3 A' 3200 3021 1.00      
4 A' 2351 2220 1.10      
5 A' 1715 1620 1.23      
6 A' 1478 1395 4.70      
7 A' 1348 1273 0.42      
8 A' 1134 1071 3.58      
9 A' 891 841 1.20      
10 A' 571 539 0.02      
11 A' 234 221 3.07      
12 A" 1001 945 34.67      
13 A" 972 918 24.83      
14 A" 694 656 10.44      
15 A" 339 320 0.66      

Unscaled Zero Point Vibrational Energy (zpe) 11223.5 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 10598.4 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 CCSD/6-31G*
ABC
1.64447 0.16385 0.14900

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.583 -0.537 0.000
N2 -1.077 -1.594 0.000
C3 0.000 0.787 0.000
H4 -0.705 1.616 0.000
C5 1.328 0.983 0.000
H6 2.034 0.156 0.000
H7 1.741 1.989 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 H7
C11.16631.44672.15642.44172.70663.4322
N21.16632.61283.23093.52453.56874.5578
C31.44672.61281.08841.34212.12912.1154
H42.15643.23091.08842.12913.10362.4745
C52.44173.52451.34212.12911.08751.0871
H62.70663.56872.12913.10361.08751.8559
H73.43224.55782.11542.47451.08711.8559

picture of acrylonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 115.847 C1 C3 C5 122.172
N2 C1 C3 178.694 C3 C5 H6 122.058
C3 C5 H7 120.757 H4 C3 C5 121.981
H6 C5 H7 117.185
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability