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

using model chemistry: CCD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/6-31G**
 hartrees
Energy at 0K-265.177987
Energy at 298.15K-265.179652
HF Energy-264.435584
Nuclear repulsion energy144.174692
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 CCD/6-31G**
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' 3870 3629 82.42      
2 A' 3533 3312 44.19      
3 A' 2269 2128 67.81      
4 A' 1899 1780 320.03      
5 A' 1422 1333 111.09      
6 A' 1237 1160 365.92      
7 A' 845 793 33.26      
8 A' 669 628 38.05      
9 A' 604 566 5.53      
10 A' 539 505 26.94      
11 A' 193 181 3.81      
12 A" 777 729 80.33      
13 A" 667 625 6.51      
14 A" 616 578 109.94      
15 A" 253 238 4.46      

Unscaled Zero Point Vibrational Energy (zpe) 9696.4 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 9091.4 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 CCD/6-31G**
ABC
0.40235 0.13706 0.10223

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.496 0.000
C2 -0.236 -0.942 0.000
C3 -0.479 -2.127 0.000
O4 1.319 0.776 0.000
O5 -0.871 1.332 0.000
H6 -0.687 -3.170 0.000
H7 1.392 1.741 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7
C11.45812.66681.34831.20723.73061.8675
C21.45811.20922.31792.36162.27313.1390
C32.66681.20923.41493.48141.06404.2969
O41.34832.31793.41492.25944.42730.9676
O51.20722.36163.48142.25944.50632.2999
H63.73062.27311.06404.42734.50635.3336
H71.86753.13904.29690.96762.29995.3336

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 177.749 C1 O4 H7 106.325
C2 C1 O4 111.303 C2 C1 O5 124.495
C2 C3 H6 179.728 O4 C1 O5 124.201
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability