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 CH3OOH (Methyl peroxide)

using model chemistry: LSDA/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at LSDA/6-31G(2df,p)
 hartrees
Energy at 0K-189.917992
Energy at 298.15K-189.922750
Nuclear repulsion energy81.975780
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 LSDA/6-31G(2df,p)
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 3643 3585 22.32      
2 A 3053 3004 8.79      
3 A 2993 2945 37.74      
4 A 2919 2872 39.73      
5 A 1444 1421 12.05      
6 A 1381 1359 8.47      
7 A 1369 1347 0.29      
8 A 1348 1326 41.64      
9 A 1186 1167 9.87      
10 A 1135 1117 1.26      
11 A 1057 1040 11.48      
12 A 919 904 16.96      
13 A 451 444 6.39      
14 A 263 259 14.93      
15 A 201 198 93.95      

Unscaled Zero Point Vibrational Energy (zpe) 11680.2 cm-1
Scaled (by 0.984) Zero Point Vibrational Energy (zpe) 11493.3 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 LSDA/6-31G(2df,p)
ABC
1.44521 0.36139 0.31575

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.097 -0.225 0.011
O2 -0.018 0.607 0.000
O3 -1.150 -0.247 -0.115
H4 1.964 0.457 0.038
H5 1.124 -0.882 0.905
H6 1.152 -0.853 -0.899
H7 -1.478 -0.248 0.806

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.39042.25051.10391.10981.10682.6948
O21.39041.42321.98742.08282.07501.8741
O32.25051.42323.19652.57212.50610.9780
H41.10391.98743.19651.80351.80343.5965
H51.10982.08282.57211.80351.80452.6801
H61.10682.07502.50611.80341.80453.1923
H72.69481.87410.97803.59652.68013.1923

picture of Methyl peroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 O3 106.226 O2 C1 H4 105.062
O2 C1 H5 112.338 O2 C1 H6 111.889
O2 O3 H7 100.982 H4 C1 H5 109.108
H4 C1 H6 109.328 H5 C1 H6 108.998
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.324      
2 O -0.118      
3 O -0.336      
4 H 0.164      
5 H 0.130      
6 H 0.153      
7 H 0.330      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.665 -0.786 1.431 1.763
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.563 0.364 -2.537
y 0.364 -19.171 -0.346
z -2.537 -0.346 -17.121
Traceless
 xyz
x 2.583 0.364 -2.537
y 0.364 -2.829 -0.346
z -2.537 -0.346 0.246
Polar
3z2-r20.492
x2-y23.608
xy0.364
xz-2.537
yz-0.346


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.225 0.237 -0.189
y 0.237 2.912 -0.035
z -0.189 -0.035 3.042


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000