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All results from a given calculation for CH3OO (methylperoxy 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-188.511065
Energy at 298.15K-188.514638
HF Energy-188.168330
Nuclear repulsion energy70.854312
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' 3151 3028 11.82      
2 A' 3060 2941 11.26      
3 A' 1570 1509 6.02      
4 A' 1468 1411 3.72      
5 A' 1164 1118 2.89      
6 A' 1016 977 16.90      
7 A' 854 821 5.83      
8 A' 432 415 4.98      
9 A" 3147 3025 18.85      
10 A" 1554 1494 5.05      
11 A" 1124 1081 0.14      
12 A" 164 158 0.62      

Unscaled Zero Point Vibrational Energy (zpe) 9352.0 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 8988.2 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
1.42971 0.35365 0.30002

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)
C1 1.056 -0.432 0.000
O2 0.000 0.643 0.000
O3 -1.280 -0.072 0.000
H4 2.007 0.110 0.000
H5 0.947 -1.042 0.901
H6 0.947 -1.042 -0.901

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6
C11.50672.36361.09431.09381.0938
O21.50671.46622.07682.13252.1325
O32.36361.46623.29212.59032.5903
H41.09432.07683.29211.80671.8067
H51.09382.13252.59031.80671.8015
H61.09382.13252.59031.80671.8015

picture of methylperoxy radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 O3 105.313 O2 C1 H4 104.854
O2 C1 H5 109.144 O2 C1 H6 109.144
H4 C1 H5 111.312 H4 C1 H6 111.312
H5 C1 H6 110.865
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability