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: MP2=FULL/cc-pVQZ

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=FULL/cc-pVQZ
 hartrees
Energy at 0K-265.679178
Energy at 298.15K-265.680850
HF Energy-264.551068
Nuclear repulsion energy144.941666
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=FULL/cc-pVQZ
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' 3769 3607 112.39      
2 A' 3495 3345 60.09      
3 A' 2167 2074 60.63      
4 A' 1799 1722 296.20      
5 A' 1375 1316 112.83      
6 A' 1183 1133 350.74      
7 A' 834 799 25.86      
8 A' 688 659 33.09      
9 A' 595 570 5.39      
10 A' 532 509 24.94      
11 A' 184 176 5.30      
12 A" 780 747 50.88      
13 A" 698 668 25.16      
14 A" 614 587 83.41      
15 A" 252 242 6.93      

Unscaled Zero Point Vibrational Energy (zpe) 9482.3 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 9075.5 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=FULL/cc-pVQZ
ABC
0.40598 0.13889 0.10349

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.490 0.000
C2 -0.225 -0.933 0.000
C3 -0.471 -2.116 0.000
O4 1.311 0.779 0.000
O5 -0.874 1.317 0.000
H6 -0.684 -3.154 0.000
H7 1.368 1.744 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7
C11.44062.64781.34221.20373.70741.8558
C21.44061.20802.30002.34222.26783.1151
C32.64781.20803.39943.45661.05984.2755
O41.34222.30003.39942.25014.41020.9665
O51.20372.34223.45662.25014.47522.2823
H63.70742.26781.05984.41024.47525.3105
H71.85583.11514.27550.96652.28235.3105

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 177.207 C1 O4 H7 105.848
C2 C1 O4 111.432 C2 C1 O5 124.449
C2 C3 H6 179.827 O4 C1 O5 124.119
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability