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

using model chemistry: QCISD(T)/cc-pVDZ

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(T)/cc-pVDZ
 hartrees
Energy at 0K-265.241681
Energy at 298.15K-265.243244
HF Energy-264.449563
Nuclear repulsion energy143.067284
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(T)/cc-pVDZ
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' 3750 3574        
2 A' 3455 3293        
3 A' 2157 2056        
4 A' 1818 1733        
5 A' 1386 1321        
6 A' 1203 1147        
7 A' 819 781        
8 A' 630 601        
9 A' 570 544        
10 A' 526 501        
11 A' 179 170        
12 A" 767 731        
13 A" 667 635        
14 A" 590 562        
15 A" 242 230        

Unscaled Zero Point Vibrational Energy (zpe) 9379.2 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 8939.4 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(T)/cc-pVDZ
ABC
0.39790 0.13457 0.10056

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.504 0.000
C2 -0.222 -0.949 0.000
C3 -0.470 -2.153 0.000
O4 1.322 0.797 0.000
O5 -0.888 1.331 0.000
H6 -0.680 -3.212 0.000
H7 1.359 1.772 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7
C11.46972.69831.35411.21343.77771.8582
C21.46971.22942.33072.37512.30903.1462
C32.69831.22943.45183.50881.07964.3297
O41.35412.33073.45182.27364.48140.9750
O51.21342.37513.50882.27364.54752.2898
H63.77772.30901.07964.48144.54755.3845
H71.85823.14624.32970.97502.28985.3845

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 177.028 C1 O4 H7 104.672
C2 C1 O4 111.181 C2 C1 O5 124.275
C2 C3 H6 179.590 O4 C1 O5 124.544
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability