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All results from a given calculation for C2H5OO (ethylperoxy radical)

using model chemistry: MP2=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at MP2=FULL/3-21G
 hartrees
Energy at 0K-227.396744
Energy at 298.15K-227.402736
HF Energy-226.993523
Nuclear repulsion energy120.815666
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/3-21G
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' 3180 3037 13.66      
2 A' 3123 2982 13.25      
3 A' 3105 2965 7.16      
4 A' 1613 1540 2.14      
5 A' 1603 1530 5.56      
6 A' 1500 1433 3.15      
7 A' 1470 1404 41.77      
8 A' 1396 1333 94.67      
9 A' 1171 1118 6.19      
10 A' 1018 972 11.40      
11 A' 859 820 3.42      
12 A' 483 461 8.31      
13 A' 295 282 0.73      
14 A" 3197 3052 31.38      
15 A" 3173 3029 5.02      
16 A" 1590 1518 6.11      
17 A" 1334 1274 0.49      
18 A" 1192 1138 4.02      
19 A" 863 824 1.55      
20 A" 240 229 0.64      
21 A" 81 77 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 16242.9 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 15508.7 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 MP2=FULL/3-21G
ABC
1.03869 0.14235 0.13144

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.514 0.929 0.000
C2 0.000 0.698 0.000
O3 -0.173 -0.797 0.000
O4 -1.547 -1.067 0.000
H5 1.729 2.002 0.000
H6 1.959 0.476 0.889
H7 1.959 0.476 -0.889
H8 -0.482 1.100 -0.893
H9 -0.482 1.100 0.893

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.53102.41373.65451.09421.09271.09272.19312.1931
C21.53101.50582.34802.16512.16302.16301.09181.0918
O32.41371.50581.40053.38442.63792.63792.12032.1203
O43.65452.34801.40054.48943.93303.93302.57562.5756
H51.09422.16513.38444.48941.78121.78122.54912.5491
H61.09272.16302.63793.93301.78121.77723.08652.5200
H71.09272.16302.63793.93301.78121.77722.52003.0865
H82.19311.09182.12032.57562.54913.08652.52001.7869
H92.19311.09182.12032.57562.54912.52003.08651.7869

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 105.270 C1 C2 H8 112.387
C1 C2 H9 112.387 C2 C1 H5 110.006
C2 C1 H6 109.929 C2 C1 H7 109.929
C2 O3 O4 107.724 O3 C2 H8 108.361
O3 C2 H9 108.361 H5 C1 H6 109.066
H5 C1 H7 109.066 H6 C1 H7 108.818
H8 C2 H9 109.830
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability