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All results from a given calculation for CH3C(O)OO (acetyl peroxy radical)

using model chemistry: wB97X-D/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at wB97X-D/6-311G**
 hartrees
Energy at 0K-303.540253
Energy at 298.15K-303.544337
HF Energy-303.540253
Nuclear repulsion energy171.911831
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 wB97X-D/6-311G**
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' 3197 3058 1.64      
2 A' 3082 2948 0.35      
3 A' 1952 1867 261.21      
4 A' 1462 1399 11.13      
5 A' 1406 1345 41.54      
6 A' 1255 1200 22.73      
7 A' 1170 1119 167.46      
8 A' 1002 959 36.94      
9 A' 764 731 50.16      
10 A' 572 547 9.04      
11 A' 515 493 15.09      
12 A' 345 330 9.65      
13 A" 3158 3021 0.53      
14 A" 1474 1410 11.39      
15 A" 1051 1006 12.01      
16 A" 552 528 6.77      
17 A" 159 152 0.25      
18 A" 128 123 1.55      

Unscaled Zero Point Vibrational Energy (zpe) 11621.6 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 11116.1 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 wB97X-D/6-311G**
ABC
0.31168 0.16288 0.10913

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.437 0.203 0.000
C2 0.000 0.519 0.000
O3 -0.455 1.651 0.000
O4 -0.954 -0.503 0.000
O5 -0.342 -1.736 0.000
H6 1.985 1.139 0.000
H7 1.697 -0.383 0.881
H8 1.697 -0.383 -0.881

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7 H8
C11.47132.38212.49302.63181.08441.08981.0898
C21.47131.21951.39812.28152.07962.11442.1144
O32.38211.21952.21083.38922.49313.08943.0894
O42.49301.39812.21081.37723.36652.79612.7961
O52.63182.28153.38921.37723.69892.60072.6007
H61.08442.07962.49313.36653.69891.78211.7821
H71.08982.11443.08942.79612.60071.78211.7617
H81.08982.11443.08942.79612.60071.78211.7617

picture of acetyl peroxy radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 124.298 C1 C2 O4 120.618
C2 C1 H6 107.967 C2 C1 H7 110.413
C2 C1 H8 110.413 C2 O4 O5 110.584
O3 C2 O4 115.084 H6 C1 H7 110.100
H6 C1 H8 110.100 H7 C1 H8 107.856
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.363      
2 C 0.357      
3 O -0.258      
4 O -0.106      
5 O -0.127      
6 H 0.162      
7 H 0.167      
8 H 0.167      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.700 -0.273 0.000 2.713
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.277 0.874 0.000
y 0.874 -33.806 0.000
z 0.000 0.000 -26.233
Traceless
 xyz
x 2.742 0.874 0.000
y 0.874 -7.051 0.000
z 0.000 0.000 4.309
Polar
3z2-r28.619
x2-y26.529
xy0.874
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.417 -0.386 0.000
y -0.386 6.356 0.000
z 0.000 0.000 3.107


<r2> (average value of r2) Å2
<r2> 102.828
(<r2>)1/2 10.140