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 H2COO (Dioxymethyl radical)

using model chemistry: MP3=FULL/aug-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 MP3=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-189.331185
Energy at 298.15K-189.333801
HF Energy-188.635627
Nuclear repulsion energy70.976839
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/aug-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' 3315 3315 1.33      
2 A' 3193 3193 7.39      
3 A' 1641 1641 51.07      
4 A' 1453 1453 13.20      
5 A' 1276 1276 26.46      
6 A' 843 843 286.93      
7 A' 531 531 7.39      
8 A" 1035 1035 26.76      
9 A" 720 720 2.58      

Unscaled Zero Point Vibrational Energy (zpe) 7002.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7002.1 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 MP3=FULL/aug-cc-pVTZ
ABC
2.70927 0.42808 0.36967

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.460 0.000
C2 1.051 -0.188 0.000
H3 0.997 -1.265 0.000
H4 1.957 0.391 0.000
O5 -1.157 -0.209 0.000

Atom - Atom Distances (Å)
  O1 C2 H3 H4 O5
O11.23461.99211.95781.3366
C21.23461.07781.07542.2082
H31.99211.07781.91392.3992
H41.95781.07541.91393.1712
O51.33662.20822.39923.1712

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 118.809 O1 C2 H4 115.724
C2 O1 O5 118.312 H3 C2 H4 125.466
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability