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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CBS-Q
 hartrees
Energy at 0K-265.546173
Energy at 298.15K-265.540504
HF Energy-264.426362
Nuclear repulsion energy146.252749
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 CBS-Q
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' 4057 4057 128.69      
2 A' 3649 3649 42.57      
3 A' 2426 2426 103.95      
4 A' 2026 2026 534.70      
5 A' 1499 1499 133.41      
6 A' 1340 1340 439.03      
7 A' 892 892 48.09      
8 A' 802 802 43.84      
9 A' 663 663 7.78      
10 A' 580 580 31.97      
11 A' 221 221 5.04      
12 A" 874 874 104.08      
13 A" 859 859 24.28      
14 A" 662 662 121.24      
15 A" 286 286 8.48      

Unscaled Zero Point Vibrational Energy (zpe) 10418.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10418.2 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 CBS-Q
ABC
0.40066 0.13621 0.10165

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.488 0.000
C2 -0.250 -0.941 0.000
C3 -0.471 -2.102 0.000
O4 1.290 0.778 0.000
O5 -0.839 1.316 0.000
H6 -0.659 -3.145 0.000
H7 1.380 1.723 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7
C11.45052.63201.32271.17943.69181.8521
C21.45051.18162.30872.33292.24143.1235
C32.63201.18163.37623.43791.05974.2495
O41.32272.30873.37622.19664.38090.9494
O51.17942.33293.43792.19664.46462.2559
H63.69182.24141.05974.38094.46465.2780
H71.85213.12354.24950.94942.25595.2780

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 179.165 C1 O4 H7 108.083
C2 C1 O4 112.632 C2 C1 O5 124.693
C2 C3 H6 179.463 O4 C1 O5 122.675
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability