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: MP2=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2=FULL/6-31+G**
 hartrees
Energy at 0K-190.351643
Energy at 298.15K-190.356350
HF Energy-189.808670
Nuclear repulsion energy80.569259
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=FULL/6-31+G**
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 3819 3586 50.33      
2 A 3245 3048 12.73      
3 A 3219 3024 32.35      
4 A 3117 2928 33.08      
5 A 1564 1469 8.32      
6 A 1517 1425 5.33      
7 A 1493 1402 1.34      
8 A 1368 1285 52.04      
9 A 1213 1139 8.20      
10 A 1196 1123 4.18      
11 A 1062 998 26.60      
12 A 851 799 11.07      
13 A 445 418 11.61      
14 A 262 246 5.64      
15 A 169 159 145.75      

Unscaled Zero Point Vibrational Energy (zpe) 12270.2 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 11524.1 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=FULL/6-31+G**
ABC
1.40489 0.35012 0.30059

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.129 -0.228 0.030
O2 -0.010 0.621 -0.039
O3 -1.154 -0.312 -0.071
H4 1.972 0.458 0.005
H5 1.131 -0.804 0.954
H6 1.162 -0.895 -0.830
H7 -1.724 0.139 0.572

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.42272.28741.08731.08881.08852.9278
O21.42271.47691.98872.07802.07251.8828
O32.28741.47693.22052.55272.50600.9708
H41.08731.98873.22051.78891.78483.7528
H51.08882.07802.55271.78891.78743.0311
H61.08852.07252.50601.78481.78743.3712
H72.92781.88280.97083.75283.03113.3712

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 104.146 O2 C1 H4 104.008
O2 C1 H5 110.967 O2 C1 H6 110.537
O2 O3 H7 98.451 H4 C1 H5 110.587
H4 C1 H6 110.230 H5 C1 H6 110.356
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2=FULL/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.166      
2 O -0.233      
3 O -0.386      
4 H 0.144      
5 H 0.134      
6 H 0.142      
7 H 0.365      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


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