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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-227.389880
Energy at 298.15K-227.395871
HF Energy-226.993497
Nuclear repulsion energy120.796892
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 MP2/3-21G
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 3035 13.76      
2 A' 3122 2980 13.28      
3 A' 3105 2964 7.20      
4 A' 1613 1540 2.11      
5 A' 1603 1530 5.55      
6 A' 1500 1432 3.05      
7 A' 1470 1403 42.19      
8 A' 1396 1333 94.12      
9 A' 1171 1117 6.18      
10 A' 1018 972 11.41      
11 A' 859 820 3.45      
12 A' 483 461 8.31      
13 A' 295 281 0.73      
14 A" 3196 3051 31.62      
15 A" 3172 3028 4.94      
16 A" 1590 1517 6.08      
17 A" 1334 1274 0.49      
18 A" 1192 1138 4.01      
19 A" 863 824 1.54      
20 A" 240 229 0.64      
21 A" 81 77 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 16240.6 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 15501.7 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 MP2/3-21G
ABC
1.03830 0.14230 0.13140

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.514 0.929 0.000
C2 0.000 0.699 0.000
O3 -0.173 -0.798 0.000
O4 -1.548 -1.068 0.000
H5 1.729 2.002 0.000
H6 1.960 0.476 0.889
H7 1.960 0.476 -0.889
H8 -0.482 1.101 -0.894
H9 -0.482 1.101 0.894

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.53132.41433.65511.09441.09291.09292.19342.1934
C21.53131.50622.34822.16542.16342.16341.09201.0920
O32.41431.50621.40063.38502.63842.63842.12062.1206
O43.65512.34821.40064.48993.93363.93362.57582.5758
H51.09442.16543.38504.48991.78141.78142.54942.5494
H61.09292.16342.63843.93361.78141.77753.08692.5204
H71.09292.16342.63843.93361.78141.77752.52043.0869
H82.19341.09202.12062.57582.54943.08692.52041.7872
H92.19341.09202.12062.57582.54942.52043.08691.7872

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 105.272 C1 C2 H8 112.387
C1 C2 H9 112.387 C2 C1 H5 109.997
C2 C1 H6 109.928 C2 C1 H7 109.928
C2 O3 O4 107.717 O3 C2 H8 108.356
O3 C2 H9 108.356 H5 C1 H6 109.070
H5 C1 H7 109.070 H6 C1 H7 108.823
H8 C2 H9 109.837
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability