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

using model chemistry: MP2/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-265.191364
Energy at 298.15K-265.192880
HF Energy-264.441170
Nuclear repulsion energy143.459328
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 MP2/6-31+G**
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' 3779 3554 104.49      
2 A' 3524 3315 58.30      
3 A' 2169 2040 65.99      
4 A' 1779 1673 321.71      
5 A' 1364 1283 119.03      
6 A' 1183 1113 376.76      
7 A' 832 782 23.81      
8 A' 649 611 44.39      
9 A' 581 546 4.44      
10 A' 523 492 25.53      
11 A' 175 165 5.35      
12 A" 753 708 69.56      
13 A" 628 591 1.33      
14 A" 585 550 127.80      
15 A" 229 216 4.07      

Unscaled Zero Point Vibrational Energy (zpe) 9376.6 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 8819.7 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 MP2/6-31+G**
ABC
0.39572 0.13658 0.10154

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.491 0.000
C2 -0.229 -0.938 0.000
C3 -0.480 -2.134 0.000
O4 1.327 0.778 0.000
O5 -0.883 1.336 0.000
H6 -0.697 -3.177 0.000
H7 1.397 1.750 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7
C11.44782.66911.35741.22143.73361.8804
C21.44781.22212.31662.36582.28683.1416
C32.66911.22213.42723.49321.06474.3137
O41.35742.31663.42722.27864.44250.9739
O51.22142.36583.49322.27864.51602.3175
H63.73362.28681.06474.44254.51605.3529
H71.88043.14164.31370.97392.31755.3529

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 177.269 C1 O4 H7 106.368
C2 C1 O4 111.306 C2 C1 O5 124.618
C2 C3 H6 179.933 O4 C1 O5 124.076
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability