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All results from a given calculation for C3H2O2 (Propiolic acid)

using model chemistry: MP4/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/aug-cc-pVDZ
 hartrees
Energy at 0K-265.302782
Energy at 298.15K-265.304124
HF Energy-264.463369
Nuclear repulsion energy142.397849
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 MP4/6-31G*
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' 3655 3571        
2 A' 3475 3395        
3 A' 2154 2104        
4 A' 1778 1737        
5 A' 1389 1357        
6 A' 1192 1164        
7 A' 820 801        
8 A' 599 585        
9 A' 566 553        
10 A' 521 509        
11 A' 184 180        
12 A" 751 734        
13 A" 633 618        
14 A" 562 549        
15 A" 229 224        

Unscaled Zero Point Vibrational Energy (zpe) 9255.2 cm-1
Scaled (by 0.9769) Zero Point Vibrational Energy (zpe) 9041.4 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 MP4/aug-cc-pVDZ
ABC
0.39178 0.13399 0.09984

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.498 0.000
C2 -0.207 -0.952 0.000
C3 -0.483 -2.155 0.000
O4 1.331 0.807 0.000
O5 -0.899 1.329 0.000
H6 -0.695 -3.212 0.000
H7 1.376 1.781 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7
C11.46442.69671.36691.22483.77441.8822
C21.46441.23462.33682.38422.31223.1589
C32.69671.23463.47403.50951.07784.3540
O41.36692.33683.47402.29084.50100.9755
O51.22482.38423.50952.29084.54632.3199
H63.77442.31221.07784.50104.54635.4061
H71.88223.15894.35400.97552.31995.4061

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 175.182 C1 O4 H7 105.725
C2 C1 O4 111.199 C2 C1 O5 124.654
C2 C3 H6 178.373 O4 C1 O5 124.147
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability