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All results from a given calculation for CH3CH2O (Ethoxy 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-153.477476
Energy at 298.15K 
HF Energy-153.477476
Nuclear repulsion energy74.310862
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' 3240 2934 37.53      
2 A' 3172 2872 13.88      
3 A' 3144 2847 33.38      
4 A' 1616 1463 3.31      
5 A' 1568 1420 8.43      
6 A' 1543 1397 14.62      
7 A' 1508 1365 6.43      
8 A' 1193 1080 8.48      
9 A' 1155 1045 30.84      
10 A' 955 865 1.77      
11 A' 451 408 5.59      
12 A" 3251 2943 43.34      
13 A" 3177 2877 17.31      
14 A" 1601 1450 1.98      
15 A" 1366 1237 0.67      
16 A" 920 833 0.09      
17 A" 268 243 5.21      
18 A" 192i 174i 21.17      

Unscaled Zero Point Vibrational Energy (zpe) 14966.2 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 13551.9 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 HF/6-31G(2df,p)
ABC
1.30046 0.32335 0.28612

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 1.046 -0.575 0.000
C2 0.000 0.530 0.000
O3 -1.300 0.060 0.000
H4 2.047 -0.153 0.000
H5 0.937 -1.202 0.879
H6 0.937 -1.202 -0.879
H7 0.104 1.175 0.872
H8 0.104 1.175 -0.872

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.52092.43041.08641.08511.08512.16982.1698
C21.52091.38272.15772.15612.15611.08961.0896
O32.43041.38273.35412.71512.71511.99411.9941
H41.08642.15773.35411.76161.76162.50962.5096
H51.08512.15612.71511.76161.75832.51833.0673
H61.08512.15612.71511.76161.75833.06732.5183
H72.16981.08961.99412.50962.51833.06731.7437
H82.16981.08961.99412.50963.06732.51831.7437

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 113.565 C1 C2 H7 111.366
C1 C2 H8 111.366 C2 C1 H4 110.592
C2 C1 H5 110.541 C2 C1 H6 110.541
O3 C2 H7 106.924 O3 C2 H8 106.924
H4 C1 H5 108.429 H4 C1 H6 108.429
H5 C1 H6 108.230 H7 C2 H8 106.285
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 -0.424      
2 C 0.017      
3 O -0.303      
4 H 0.133      
5 H 0.145      
6 H 0.145      
7 H 0.144      
8 H 0.144      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.751 0.602 0.000 1.852
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.927 0.165 0.000
y 0.165 -18.703 0.000
z 0.000 0.000 -17.855
Traceless
 xyz
x -3.648 0.165 0.000
y 0.165 1.188 0.000
z 0.000 0.000 2.460
Polar
3z2-r24.920
x2-y2-3.224
xy0.165
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.872 -0.051 0.000
y -0.051 3.670 0.000
z 0.000 0.000 3.701


<r2> (average value of r2) Å2
<r2> 50.666
(<r2>)1/2 7.118