return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HCOO (formate neutral radical)

using model chemistry: CCSD=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at CCSD=FULL/cc-pVTZ
 hartrees
Energy at 0K-188.826599
Energy at 298.15K-188.827652
HF Energy-188.202953
Nuclear repulsion energy62.798874
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 CCSD=FULL/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' 3002 2846 28.32      
2 A' 1803 1709 238.40      
3 A' 1394 1322 8.53      
4 A' 1072 1016 73.74      
5 A' 359 340 42.23      
6 A" 1045 991 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 4337.2 cm-1
Scaled (by 0.9481) Zero Point Vibrational Energy (zpe) 4112.1 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 CCSD=FULL/cc-pVTZ
ABC
3.29800 0.42147 0.37371

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.357 0.000
H2 -0.315 1.409 0.000
O3 1.123 -0.045 0.000
O4 -1.084 -0.398 0.000

Atom - Atom Distances (Å)
  C1 H2 O3 O4
C11.09831.19281.3207
H21.09832.04531.9635
O31.19282.04532.2348
O41.32071.96352.2348

picture of formate neutral radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 O3 126.377 H2 C1 O4 108.173
O3 C1 O4 125.450
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability