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: B2PLYP=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B2PLYP=FULL/6-31G*
 hartrees
Energy at 0K-189.402603
Energy at 298.15K-189.405179
HF Energy-189.226714
Nuclear repulsion energy69.923638
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 B2PLYP=FULL/6-31G*
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' 3359 3186 0.53      
2 A' 3201 3036 4.30      
3 A' 1513 1435 25.06      
4 A' 1366 1295 75.11      
5 A' 1265 1199 21.00      
6 A' 1029 975 82.92      
7 A' 541 513 0.34      
8 A" 842 799 40.59      
9 A" 673 638 8.70      

Unscaled Zero Point Vibrational Energy (zpe) 6893.7 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 6538.0 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 B2PLYP=FULL/6-31G*
ABC
2.68452 0.41209 0.35725

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.459 0.000
C2 1.074 -0.232 0.000
H3 1.000 -1.312 0.000
H4 1.989 0.344 0.000
O5 -1.179 -0.165 0.000

Atom - Atom Distances (Å)
  O1 C2 H3 H4 O5
O11.27732.03441.99241.3342
C21.27731.08341.08052.2547
H32.03441.08341.92892.4631
H41.99241.08051.92893.2088
O51.33422.25472.46313.2088

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 118.802 O1 C2 H4 115.097
C2 O1 O5 119.380 H3 C2 H4 126.101
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability