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All results from a given calculation for H2COO (Dioxymethyl 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-187.880595
Energy at 298.15K-187.883000
HF Energy-187.505570
Nuclear repulsion energy66.409381
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' 3286 3158 1.97      
2 A' 3139 3017 0.81      
3 A' 1477 1420 5.33      
4 A' 1255 1206 0.75      
5 A' 1134 1090 50.24      
6 A' 1002 963 11.83      
7 A' 473 454 6.61      
8 A" 779 749 51.17      
9 A" 537 516 3.34      

Unscaled Zero Point Vibrational Energy (zpe) 6540.8 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 6286.4 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
2.18710 0.38307 0.32597

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)
O1 0.000 0.529 0.000
C2 1.115 -0.195 0.000
H3 1.037 -1.278 0.000
H4 2.046 0.360 0.000
O5 -1.222 -0.267 0.000

Atom - Atom Distances (Å)
  O1 C2 H3 H4 O5
O11.32942.08282.05321.4579
C21.32941.08531.08432.3377
H32.08281.08531.92402.4742
H42.05321.08431.92403.3275
O51.45792.33772.47423.3275

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 118.865 O1 C2 H4 116.192
C2 O1 O5 113.925 H3 C2 H4 124.943
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability