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 C2H5OO (ethylperoxy radical)

using model chemistry: B97D3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B97D3/6-31G*
 hartrees
Energy at 0K-229.402447
Energy at 298.15K-229.408258
HF Energy-229.402447
Nuclear repulsion energy 
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 B97D3/6-31G*
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' 3085 3025 20.80      
2 A' 3021 2962 17.17      
3 A' 3009 2950 14.01      
4 A' 1505 1476 4.57      
5 A' 1487 1458 0.37      
6 A' 1410 1383 12.67      
7 A' 1356 1329 19.49      
8 A' 1150 1127 9.11      
9 A' 1110 1088 1.20      
10 A' 989 970 12.10      
11 A' 797 782 1.94      
12 A' 489 479 9.62      
13 A' 296 291 1.27      
14 A" 3098 3037 40.89      
15 A" 3072 3012 4.17      
16 A" 1487 1458 6.13      
17 A" 1257 1232 0.01      
18 A" 1125 1103 4.09      
19 A" 792 776 1.61      
20 A" 212 208 0.30      
21 A" 67 65 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 15405.9 cm-1
Scaled (by 0.9804) Zero Point Vibrational Energy (zpe) 15103.9 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 B97D3/6-31G*
ABC
1.09874 0.14464 0.13438

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.498 0.934 0.000
C2 0.000 0.686 0.000
O3 -0.205 -0.778 0.000
O4 -1.498 -1.083 0.000
H5 1.691 2.017 0.000
H6 1.970 0.500 0.892
H7 1.970 0.500 -0.892
H8 -0.501 1.078 -0.895
H9 -0.501 1.078 0.895

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51892.41533.61221.09921.09831.09832.19522.1952
C21.51891.47842.31782.15172.17012.17011.09831.0983
O32.41531.47841.32873.37702.67542.67542.08222.0822
O43.61222.31781.32874.44693.91483.91482.54282.5428
H51.09922.15173.37704.44691.78121.78122.54662.5466
H61.09832.17012.67543.91481.78121.78433.10342.5369
H71.09832.17012.67543.91481.78121.78432.53693.1034
H82.19521.09832.08222.54282.54663.10342.53691.7908
H92.19521.09832.08222.54282.54662.53693.10341.7908

picture of ethylperoxy radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 108.035 C1 C2 H8 112.278
C1 C2 H9 112.278 C2 C1 H5 109.744
C2 C1 H6 110.911 C2 C1 H7 110.911
C2 O3 O4 112.867 O3 C2 H8 107.700
O3 C2 H9 107.700 H5 C1 H6 108.342
H5 C1 H7 108.342 H6 C1 H7 108.512
H8 C2 H9 108.648
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.489      
2 C -0.045      
3 O -0.155      
4 O -0.180      
5 H 0.169      
6 H 0.177      
7 H 0.177      
8 H 0.172      
9 H 0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.664 2.457 0.000 2.967
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.344 -1.224 0.000
y -1.224 -24.806 0.000
z 0.000 0.000 -22.889
Traceless
 xyz
x -1.496 -1.224 0.000
y -1.224 -0.690 0.000
z 0.000 0.000 2.186
Polar
3z2-r24.371
x2-y2-0.538
xy-1.224
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.477 1.054 0.000
y 1.054 4.656 0.000
z 0.000 0.000 3.713


<r2> (average value of r2) Å2
<r2> 90.457
(<r2>)1/2 9.511