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All results from a given calculation for HCOOH (Formic acid)

using model chemistry: MP3=FULL/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes CS 1A'

Conformer 1 (CS)

Jump to S1C2
Vibrational Frequencies calculated at MP3=FULL/daug-cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at MP3=FULL/daug-cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/daug-cc-pVDZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP3=FULL/daug-cc-pVDZ
 hartrees
Energy at 0K-189.331732
Energy at 298.15K 
HF Energy-188.790269
Nuclear repulsion energy69.826199
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 MP3=FULL/daug-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' 3881 3881 76.69      
2 A' 3063 3063 57.86      
3 A' 1903 1903 316.45      
4 A' 1439 1439 1.05      
5 A' 1322 1322 318.25      
6 A' 1134 1134 60.21      
7 A' 666 666 10.14      
8 A" 1047 1047 0.02      
9 A" 507 507 86.61      

Unscaled Zero Point Vibrational Energy (zpe) 7481.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7481.0 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 MP3=FULL/daug-cc-pVDZ
ABC
2.87777 0.38827 0.34211

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.387 0.000
O2 -0.900 -0.627 0.000
O3 1.181 0.195 0.000
H4 -0.459 1.395 0.000
H5 -1.791 -0.261 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5
C11.35541.19651.10761.9045
O21.35542.23682.06920.9630
O31.19652.23682.03243.0064
H41.10762.06922.03242.1254
H51.90450.96303.00642.1254

picture of Formic acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H5 109.299 O2 C1 O3 122.325
O2 C1 H4 113.930 O3 C1 H4 123.745
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability