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

using model chemistry: MP2=FULL/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/STO-3G
 hartrees
Energy at 0K-261.254422
Energy at 298.15K-261.255722
HF Energy-260.933358
Nuclear repulsion energy139.282187
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 MP2=FULL/STO-3G
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' 3849 3421 20.15      
2 A' 3725 3311 99.57      
3 A' 2242 1993 56.14      
4 A' 1794 1595 50.72      
5 A' 1531 1361 35.23      
6 A' 1253 1114 203.60      
7 A' 805 715 27.02      
8 A' 765 680 10.05      
9 A' 586 521 1.26      
10 A' 479 425 18.92      
11 A' 179 159 1.43      
12 A" 744 662 16.40      
13 A" 681 605 9.45      
14 A" 615 547 65.22      
15 A" 255 227 2.26      

Unscaled Zero Point Vibrational Energy (zpe) 9750.6 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 8667.3 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 MP2=FULL/STO-3G
ABC
0.37255 0.12887 0.09575

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.502 0.000
C2 -0.282 -0.976 0.000
C3 -0.556 -2.169 0.000
O4 1.397 0.733 0.000
O5 -0.849 1.434 0.000
H6 -0.790 -3.226 0.000
H7 1.432 1.752 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7
C11.50442.72841.41611.26093.81031.9011
C21.50441.22442.39582.47582.30643.2219
C32.72841.22443.49813.61541.08204.3965
O41.41612.39583.49812.35294.52251.0197
O51.26092.47583.61542.35294.66032.3032
H63.81032.30641.08204.52254.66035.4511
H71.90113.22194.39651.01972.30325.4511

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 177.901 C1 O4 H7 101.367
C2 C1 O4 110.200 C2 C1 O5 126.871
C2 C3 H6 179.569 O4 C1 O5 122.929
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability