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

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-302.082862
Energy at 298.15K-302.087255
HF Energy-302.082862
Nuclear repulsion energy174.185211
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 HF/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3307 2997 5.28      
2 A' 3204 2904 0.79      
3 A' 2061 1868 365.59      
4 A' 1583 1435 8.61      
5 A' 1537 1393 28.27      
6 A' 1326 1202 217.17      
7 A' 1290 1169 98.91      
8 A' 1109 1006 42.68      
9 A' 857 777 26.18      
10 A' 641 581 0.72      
11 A' 563 510 20.56      
12 A' 360 327 6.90      
13 A" 3270 2964 5.18      
14 A" 1597 1448 7.63      
15 A" 1163 1054 10.59      
16 A" 617 559 13.43      
17 A" 205 186 0.00      
18 A" 145 132 0.82      

Unscaled Zero Point Vibrational Energy (zpe) 12417.5 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 11255.2 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 HF/Def2TZVPP
ABC
0.31696 0.16804 0.11206

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.430 0.177 0.000
C2 0.000 0.515 0.000
O3 -0.417 1.652 0.000
O4 -0.960 -0.473 0.000
O5 -0.364 -1.733 0.000
H6 1.991 1.096 0.000
H7 1.677 -0.408 0.877
H8 1.677 -0.408 -0.877

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7 H8
C11.46972.36392.47662.62061.07681.08231.0823
C21.46971.21061.37752.27782.07392.10562.1056
O32.36391.21062.19273.38542.47143.06553.0655
O42.47661.37752.19271.39413.34182.77952.7795
O52.62062.27783.38541.39413.68122.58672.5867
H61.07682.07392.47143.34183.68121.76901.7690
H71.08232.10563.06552.77952.58671.76901.7531
H81.08232.10563.06552.77952.58671.76901.7531

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 123.476 C1 C2 O4 120.849
C2 C1 H6 108.067 C2 C1 H7 110.273
C2 C1 H8 110.273 C2 O4 O5 110.541
O3 C2 O4 115.674 H6 C1 H7 110.029
H6 C1 H8 110.029 H7 C1 H8 108.171
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.187      
2 C 0.438      
3 O -0.368      
4 O -0.116      
5 O -0.065      
6 H 0.117      
7 H 0.090      
8 H 0.090      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.795 -1.311 0.000 3.087
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.624 1.127 0.000
y 1.127 -33.894 0.000
z 0.000 0.000 -26.272
Traceless
 xyz
x 2.459 1.127 0.000
y 1.127 -6.946 0.000
z 0.000 0.000 4.487
Polar
3z2-r28.974
x2-y26.270
xy1.127
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.558 -0.312 0.000
y -0.312 6.091 0.000
z 0.000 0.000 3.493


<r2> (average value of r2) Å2
<r2> 100.843
(<r2>)1/2 10.042