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

using model chemistry: QCISD/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-265.476341
Energy at 298.15K-265.478001
HF Energy-264.536074
Nuclear repulsion energy144.648160
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/aug-cc-pVTZ
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' 3796 3653 97.07      
2 A' 3473 3342 48.04      
3 A' 2219 2136 71.77      
4 A' 1824 1755 361.50      
5 A' 1388 1336 93.89      
6 A' 1207 1161 361.09      
7 A' 832 800 30.10      
8 A' 683 657 34.97      
9 A' 596 573 5.16      
10 A' 534 514 24.27      
11 A' 184 177 5.20      
12 A" 781 752 63.54      
13 A" 728 701 15.10      
14 A" 596 573 81.62      
15 A" 235 226 7.43      

Unscaled Zero Point Vibrational Energy (zpe) 9536.8 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 9178.2 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 QCISD/aug-cc-pVTZ
ABC
0.40553 0.13787 0.10289

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.494 0.000
C2 -0.236 -0.940 0.000
C3 -0.475 -2.121 0.000
O4 1.314 0.777 0.000
O5 -0.869 1.325 0.000
H6 -0.685 -3.163 0.000
H7 1.384 1.741 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7
C11.45402.65761.34431.20223.72041.8628
C21.45401.20402.31382.35262.26693.1330
C32.65761.20403.40543.46861.06294.2857
O41.34432.31383.40542.25064.41780.9665
O51.20222.35263.46862.25064.49182.2906
H63.72042.26691.06294.41784.49185.3221
H71.86283.13304.28570.96652.29065.3221

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 177.926 C1 O4 H7 106.287
C2 C1 O4 111.495 C2 C1 O5 124.393
C2 C3 H6 179.977 O4 C1 O5 124.113
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability