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

using model chemistry: wB97X-D/TZVP

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/TZVP
 hartrees
Energy at 0K-303.569914
Energy at 298.15K-303.573931
HF Energy-303.569914
Nuclear repulsion energy171.823540
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/TZVP
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' 3204 3060 1.16      
2 A' 3088 2949 0.36      
3 A' 1941 1854 269.20      
4 A' 1464 1399 11.23      
5 A' 1412 1349 38.23      
6 A' 1247 1191 28.51      
7 A' 1165 1112 167.24      
8 A' 1000 955 40.19      
9 A' 759 725 53.38      
10 A' 569 544 10.51      
11 A' 519 495 14.28      
12 A' 339 323 9.71      
13 A" 3163 3021 0.24      
14 A" 1474 1408 11.65      
15 A" 1054 1007 10.42      
16 A" 548 523 7.84      
17 A" 133 127 1.75      
18 A" 121 115 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 11599.7 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 11077.7 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/TZVP
ABC
0.31140 0.16259 0.10896

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.438 0.212 0.000
C2 0.000 0.518 0.000
O3 -0.462 1.648 0.000
O4 -0.951 -0.506 0.000
O5 -0.339 -1.740 0.000
H6 1.981 1.150 0.000
H7 1.704 -0.372 0.880
H8 1.704 -0.372 -0.880

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7 H8
C11.47052.38152.49502.64041.08371.08911.0891
C21.47051.22011.39812.28412.07952.11412.1141
O32.38151.22012.20883.39032.49343.08923.0892
O42.49501.39812.20881.37743.36782.80002.8000
O52.64042.28413.39031.37743.70652.61152.6115
H61.08372.07952.49343.36783.70651.77981.7798
H71.08912.11413.08922.80002.61151.77981.7602
H81.08912.11413.08922.80002.61151.77981.7602

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 124.271 C1 C2 O4 120.843
C2 C1 H6 108.046 C2 C1 H7 110.486
C2 C1 H8 110.486 C2 O4 O5 110.758
O3 C2 O4 114.886 H6 C1 H7 110.001
H6 C1 H8 110.001 H7 C1 H8 107.827
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.370      
2 C 0.257      
3 O -0.249      
4 O 0.006      
5 O -0.141      
6 H 0.165      
7 H 0.166      
8 H 0.166      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.824 -0.285 0.000 2.838
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.435 0.948 0.000
y 0.948 -34.345 0.000
z 0.000 0.000 -26.363
Traceless
 xyz
x 2.919 0.948 0.000
y 0.948 -7.446 0.000
z 0.000 0.000 4.527
Polar
3z2-r29.054
x2-y26.910
xy0.948
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.800 -0.411 0.000
y -0.411 6.909 0.000
z 0.000 0.000 3.455


<r2> (average value of r2) Å2
<r2> 103.133
(<r2>)1/2 10.155