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

using model chemistry: MP2/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-38.116536
Energy at 298.15K-38.118970
HF Energy-37.780647
Nuclear repulsion energy37.823062
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/CEP-121G
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' 3273 3194 1.20      
2 A' 3089 3015 1.13      
3 A' 1488 1452 5.92      
4 A' 1321 1289 43.20      
5 A' 1223 1194 24.90      
6 A' 661 645 228.95      
7 A' 447 436 38.29      
8 A" 971 948 52.23      
9 A" 667 651 1.44      

Unscaled Zero Point Vibrational Energy (zpe) 6569.4 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 6411.7 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/CEP-121G
ABC
2.42339 0.37842 0.32731

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.493 0.000
C2 1.122 -0.171 0.000
H3 1.082 -1.263 0.000
H4 2.026 0.436 0.000
O5 -1.230 -0.261 0.000

Atom - Atom Distances (Å)
  O1 C2 H3 H4 O5
O11.30362.06232.02641.4422
C21.30361.09241.08882.3531
H32.06231.09241.94332.5193
H42.02641.08881.94333.3290
O51.44222.35312.51933.3290

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 118.525 O1 C2 H4 115.489
C2 O1 O5 117.871 H3 C2 H4 125.986
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability