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

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-265.154272
Energy at 298.15K-265.155812
HF Energy-264.423512
Nuclear repulsion energy143.600958
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 MP2/6-31G*
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' 3678 3468 97.20      
2 A' 3516 3315 54.41      
3 A' 2181 2056 67.69      
4 A' 1818 1714 256.54      
5 A' 1399 1320 99.91      
6 A' 1206 1137 370.67      
7 A' 836 788 26.86      
8 A' 628 592 39.38      
9 A' 586 553 3.93      
10 A' 529 499 28.52      
11 A' 186 175 3.92      
12 A" 764 721 79.28      
13 A" 643 606 60.09      
14 A" 582 549 60.26      
15 A" 240 227 3.17      

Unscaled Zero Point Vibrational Energy (zpe) 9396.2 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 8860.6 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 MP2/6-31G*
ABC
0.39747 0.13673 0.10173

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.491 0.000
C2 -0.212 -0.942 0.000
C3 -0.465 -2.136 0.000
O4 1.320 0.793 0.000
O5 -0.892 1.322 0.000
H6 -0.728 -3.171 0.000
H7 1.364 1.773 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7
C11.44872.66771.35451.21943.73321.8717
C21.44871.22032.31492.36452.28733.1392
C32.66771.22033.43023.48451.06754.3156
O41.35452.31493.43022.27484.46140.9810
O51.21942.36453.48452.27484.49602.3002
H63.73322.28731.06754.46144.49605.3677
H71.87173.13924.31560.98102.30025.3677

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 176.425 C1 O4 H7 105.414
C2 C1 O4 111.294 C2 C1 O5 124.578
C2 C3 H6 177.762 O4 C1 O5 124.128
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability