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All results from a given calculation for CH3CH2O (Ethoxy radical)

using model chemistry: ROHF/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 ROHF/3-21G
 hartrees
Energy at 0K-152.616400
Energy at 298.15K-152.621509
HF Energy-152.616400
Nuclear repulsion energy73.187095
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 ROHF/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' 3271 2967 26.14      
2 A' 3210 2911 5.98      
3 A' 3201 2903 29.43      
4 A' 1670 1514 7.80      
5 A' 1631 1480 3.88      
6 A' 1577 1430 9.86      
7 A' 1504 1364 5.47      
8 A' 1203 1091 8.03      
9 A' 1070 970 21.45      
10 A' 908 824 2.34      
11 A' 421 382 6.88      
12 A" 3281 2976 30.60      
13 A" 3230 2930 3.96      
14 A" 1659 1504 3.34      
15 A" 1397 1267 2.02      
16 A" 1000 907 0.03      
17 A" 350 317 27.17      
18 A" 151 137 6.25      

Unscaled Zero Point Vibrational Energy (zpe) 15366.0 cm-1
Scaled (by 0.907) Zero Point Vibrational Energy (zpe) 13937.0 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 ROHF/3-21G
ABC
1.24054 0.31562 0.27725

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.081 -0.528 0.000
C2 0.000 0.552 0.000
O3 -1.332 -0.016 0.000
H4 2.067 -0.079 0.000
H5 0.983 -1.154 0.878
H6 0.983 -1.154 -0.878
H7 0.070 1.187 0.875
H8 0.070 1.187 -0.875

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.52762.46621.08371.08281.08282.17492.1749
C21.52761.44782.16102.15572.15571.08401.0840
O32.46621.44783.39932.72482.72482.04422.0442
H41.08372.16103.39931.76121.76122.52162.5216
H51.08282.15572.72481.76121.75592.51323.0644
H61.08282.15572.72481.76121.75593.06442.5132
H72.17491.08402.04422.52162.51323.06441.7508
H82.17491.08402.04422.52163.06442.51321.7508

picture of Ethoxy radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 111.935 C1 C2 H7 111.643
C1 C2 H8 111.643 C2 C1 H4 110.551
C2 C1 H5 110.180 C2 C1 H6 110.180
O3 C2 H7 106.806 O3 C2 H8 106.806
H4 C1 H5 108.766 H4 C1 H6 108.766
H5 C1 H6 108.345 H7 C2 H8 107.718
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.622      
2 C -0.142      
3 O -0.342      
4 H 0.199      
5 H 0.221      
6 H 0.221      
7 H 0.232      
8 H 0.232      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.027 0.843 0.000 2.196
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.580 -0.114 0.000
y -0.114 -18.635 0.000
z 0.000 0.000 -18.015
Traceless
 xyz
x -4.255 -0.114 0.000
y -0.114 1.662 0.000
z 0.000 0.000 2.592
Polar
3z2-r25.184
x2-y2-3.945
xy-0.114
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 51.807
(<r2>)1/2 7.198