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

using model chemistry: QCISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-187.386857
Energy at 298.15K-187.388044
HF Energy-187.062284
Nuclear repulsion energy61.795175
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/3-21G*
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' 3057 2938 150.53      
2 A' 1764 1696 512.72      
3 A' 1357 1305 59.95      
4 A' 792 761 69.99      
5 A' 601 578 27.72      
6 A" 1124 1081 1.44      

Unscaled Zero Point Vibrational Energy (zpe) 4347.8 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 4178.6 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/3-21G*
ABC
2.69122 0.43210 0.37232

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.413 0.000
H2 -0.090 1.506 0.000
O3 1.108 -0.190 0.000
O4 -1.097 -0.308 0.000

Atom - Atom Distances (Å)
  C1 H2 O3 O4
C11.09661.26141.3128
H21.09662.07602.0749
O31.26142.07602.2084
O41.31282.07492.2084

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 123.232 H2 C1 O4 118.618
O3 C1 O4 118.151
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability