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All results from a given calculation for H2COO (Dioxymethyl radical)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-187.845668
Energy at 298.15K-187.848008
HF Energy-187.512968
Nuclear repulsion energy67.100437
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 MP2/3-21G*
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' 3328 3166 2.30      
2 A' 3177 3022 1.84      
3 A' 1535 1460 1.94      
4 A' 1297 1233 37.25      
5 A' 1211 1152 23.48      
6 A' 614 584 194.32      
7 A' 384 366 73.84      
8 A" 1011 962 45.36      
9 A" 666 634 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 6611.4 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 6289.5 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 MP2/3-21G*
ABC
2.30707 0.38661 0.33112

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.514 0.000
C2 1.106 -0.158 0.000
H3 1.055 -1.239 0.000
H4 2.029 0.405 0.000
O5 -1.215 -0.291 0.000

Atom - Atom Distances (Å)
  O1 C2 H3 H4 O5
O11.29362.04612.03171.4573
C21.29361.08261.08142.3240
H32.04611.08261.91102.4596
H42.03171.08141.91103.3174
O51.45732.32402.45963.3174

picture of Dioxymethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 118.610 O1 C2 H4 117.348
C2 O1 O5 115.174 H3 C2 H4 124.042
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability