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

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-188.336803
Energy at 298.15K-188.339259
HF Energy-188.336803
Nuclear repulsion energy67.029645
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 PBEPBE/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' 3238 3209 1.76      
2 A' 3083 3055 1.20      
3 A' 1424 1411 6.62      
4 A' 1271 1260 20.91      
5 A' 1153 1142 7.12      
6 A' 955 946 18.53      
7 A' 475 471 0.85      
8 A" 795 788 71.41      
9 A" 612 606 11.01      

Unscaled Zero Point Vibrational Energy (zpe) 6502.6 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 6443.4 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 PBEPBE/3-21G
ABC
2.36432 0.38290 0.32954

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.500 0.000
C2 1.115 -0.200 0.000
H3 1.060 -1.289 0.000
H4 2.037 0.381 0.000
O5 -1.223 -0.237 0.000

Atom - Atom Distances (Å)
  O1 C2 H3 H4 O5
O11.31702.07992.04011.4282
C21.31701.09061.08982.3389
H32.07991.09061.93562.5141
H42.04011.08981.93563.3182
O51.42822.33892.51413.3182

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 119.219 O1 C2 H4 115.600
C2 O1 O5 116.803 H3 C2 H4 125.182
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.172      
2 C -0.093      
3 H 0.240      
4 H 0.241      
5 O -0.217      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.212 -0.473 0.000 3.247
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.667 -0.192 0.000
y -0.192 -16.256 0.000
z 0.000 0.000 -17.110
Traceless
 xyz
x 1.016 -0.192 0.000
y -0.192 0.132 0.000
z 0.000 0.000 -1.148
Polar
3z2-r2-2.296
x2-y20.589
xy-0.192
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.309 0.140 0.000
y 0.140 1.982 0.000
z 0.000 0.000 0.895


<r2> (average value of r2) Å2
<r2> 39.414
(<r2>)1/2 6.278