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 C3H2O2 (Propiolic acid)

using model chemistry: CCD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/TZVP
 hartrees
Energy at 0K-265.311372
Energy at 298.15K-265.312683
HF Energy-264.525160
Nuclear repulsion energy144.766453
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 CCD/TZVP
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' 3842 3642 86.81      
2 A' 3511 3328 47.00      
3 A' 2259 2142 64.68      
4 A' 1877 1779 375.19      
5 A' 1404 1331 81.15      
6 A' 1228 1164 405.06      
7 A' 842 798 34.45      
8 A' 697 660 35.99      
9 A' 611 579 6.54      
10 A' 546 517 21.35      
11 A' 188 178 5.33      
12 A" 763 724 83.37      
13 A" 614 582 0.60      
14 A" 544 515 107.63      
15 A" 62 58 1.75      

Unscaled Zero Point Vibrational Energy (zpe) 9492.4 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 8998.8 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 CCD/TZVP
ABC
0.40638 0.13800 0.10302

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.496 0.000
C2 -0.249 -0.938 0.000
C3 -0.484 -2.117 0.000
O4 1.318 0.765 0.000
O5 -0.857 1.334 0.000
H6 -0.695 -3.158 0.000
H7 1.406 1.727 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7
C11.45572.65721.34471.19793.72011.8684
C21.45571.20172.31382.35162.26473.1369
C32.65721.20173.39833.47021.06294.2830
O41.34472.31383.39832.24744.40930.9661
O51.19792.35163.47022.24744.49492.2964
H63.72012.26471.06294.40934.49495.3178
H71.86843.13694.28300.96612.29645.3178

picture of Propiolic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 178.549 C1 O4 H7 106.762
C2 C1 O4 111.365 C2 C1 O5 124.510
C2 C3 H6 179.848 O4 C1 O5 124.125
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability