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

using model chemistry: HF/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-228.267069
Energy at 298.15K-228.273274
HF Energy-228.267069
Nuclear repulsion energy125.584547
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/6-31G(2df,p)
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' 3256 2948 32.50      
2 A' 3203 2901 21.68      
3 A' 3182 2881 18.08      
4 A' 1645 1489 3.64      
5 A' 1617 1464 1.57      
6 A' 1555 1408 22.80      
7 A' 1514 1371 5.35      
8 A' 1298 1175 82.67      
9 A' 1255 1136 22.77      
10 A' 1121 1015 17.52      
11 A' 955 864 5.33      
12 A' 553 501 7.66      
13 A' 336 304 0.87      
14 A" 3270 2961 59.64      
15 A" 3244 2937 1.90      
16 A" 1601 1450 4.07      
17 A" 1394 1263 0.81      
18 A" 1278 1158 5.06      
19 A" 868 786 0.31      
20 A" 255 231 0.61      
21 A" 102 92 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 16750.2 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 15167.3 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/6-31G(2df,p)
ABC
1.14741 0.15133 0.14068

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.498 0.876 0.000
C2 0.000 0.656 0.000
O3 -0.224 -0.748 0.000
O4 -1.484 -1.022 0.000
H5 1.710 1.940 0.000
H6 1.951 0.434 0.880
H7 1.951 0.434 -0.880
H8 -0.468 1.079 -0.881
H9 -0.468 1.079 0.881

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.51392.36673.53511.08491.08441.08442.16412.1641
C21.51391.42172.24062.13832.15232.15231.08371.0837
O32.36671.42171.28993.31122.62742.62742.04272.0427
O43.53512.24061.28994.35643.83393.83392.49482.4948
H51.08492.13833.31124.35641.76111.76112.50252.5025
H61.08442.15232.62743.83391.76111.76063.06162.5040
H71.08442.15232.62743.83391.76111.76062.50403.0616
H82.16411.08372.04272.49482.50253.06162.50401.7626
H92.16411.08372.04272.49482.50252.50403.06161.7626

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 107.410 C1 C2 H8 111.763
C1 C2 H9 111.763 C2 C1 H5 109.623
C2 C1 H6 110.767 C2 C1 H7 110.767
C2 O3 O4 111.351 O3 C2 H8 108.485
O3 C2 H9 108.485 H5 C1 H6 108.544
H5 C1 H7 108.544 H6 C1 H7 108.534
H8 C2 H9 108.825
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.438      
2 C 0.035      
3 O -0.215      
4 O -0.121      
5 H 0.147      
6 H 0.155      
7 H 0.155      
8 H 0.141      
9 H 0.141      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.128 2.169 0.000 2.445
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.053 -0.741 0.000
y -0.741 -24.894 0.000
z 0.000 0.000 -23.058
Traceless
 xyz
x -1.077 -0.741 0.000
y -0.741 -0.838 0.000
z 0.000 0.000 1.916
Polar
3z2-r23.831
x2-y2-0.159
xy-0.741
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.102 0.708 0.000
y 0.708 4.313 0.000
z 0.000 0.000 3.796


<r2> (average value of r2) Å2
<r2> 87.257
(<r2>)1/2 9.341