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

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-265.203116
Energy at 298.15K-265.204573
HF Energy-264.422195
Nuclear repulsion energy143.148779
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 3490        
2 A' 3475 3318        
3 A' 2154 2056        
4 A' 1778 1698        
5 A' 1389 1327        
6 A' 1192 1138        
7 A' 820 783        
8 A' 599 572        
9 A' 566 540        
10 A' 521 498        
11 A' 184 176        
12 A" 751 718        
13 A" 633 604        
14 A" 562 537        
15 A" 229 219        

Unscaled Zero Point Vibrational Energy (zpe) 9255.2 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 8836.9 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 MP4/6-31G*
ABC
0.39475 0.13587 0.10108

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.494 0.000
C2 -0.220 -0.945 0.000
C3 -0.481 -2.138 0.000
O4 1.328 0.785 0.000
O5 -0.887 1.335 0.000
H6 -0.698 -3.187 0.000
H7 1.381 1.765 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7
C11.45502.67561.35941.22283.74621.8772
C21.45501.22202.32122.37522.29283.1475
C32.67561.22203.43803.49701.07084.3251
O41.35942.32123.43802.28234.45900.9818
O51.22282.37523.49702.28234.52582.3084
H63.74622.29281.07084.45904.52585.3711
H71.87723.14754.32510.98182.30845.3711

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 176.350 C1 O4 H7 105.465
C2 C1 O4 111.079 C2 C1 O5 124.781
C2 C3 H6 179.355 O4 C1 O5 124.140
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability