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

using model chemistry: QCISD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-311G**
 hartrees
Energy at 0K-265.302346
Energy at 298.15K-265.304021
HF Energy-264.500220
Nuclear repulsion energy144.302210
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 QCISD/6-311G**
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' 3841 3664 84.80      
2 A' 3486 3326 44.63      
3 A' 2207 2106 72.33      
4 A' 1847 1762 332.84      
5 A' 1400 1336 81.29      
6 A' 1221 1165 376.40      
7 A' 834 796 35.82      
8 A' 705 672 34.42      
9 A' 600 572 4.68      
10 A' 541 516 24.64      
11 A' 194 185 4.77      
12 A" 781 745 81.68      
13 A" 728 695 4.04      
14 A" 551 526 88.60      
15 A" 246 235 6.70      

Unscaled Zero Point Vibrational Energy (zpe) 9589.9 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 9149.7 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 QCISD/6-311G**
ABC
0.40375 0.13703 0.10231

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.500 0.000
C2 -0.241 -0.941 0.000
C3 -0.474 -2.129 0.000
O4 1.317 0.775 0.000
O5 -0.869 1.332 0.000
H6 -0.684 -3.174 0.000
H7 1.384 1.738 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7
C11.46152.67111.34581.20253.73761.8570
C21.46151.20992.31872.35802.27653.1340
C32.67111.20993.41193.48281.06674.2900
O41.34582.31873.41192.25574.42790.9652
O51.20252.35803.48282.25574.50972.2892
H63.73762.27651.06674.42794.50975.3302
H71.85703.13404.29000.96522.28925.3302

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 178.424 C1 O4 H7 105.766
C2 C1 O4 111.301 C2 C1 O5 124.245
C2 C3 H6 179.692 O4 C1 O5 124.454
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability