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

using model chemistry: HF/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-29.544519
Energy at 298.15K 
HF Energy-29.544519
Nuclear repulsion energy43.233761
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/CEP-121G*
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' 3255 2940 57.65      
2 A' 3188 2880 14.54      
3 A' 3172 2866 49.25      
4 A' 1628 1470 4.17      
5 A' 1588 1435 9.18      
6 A' 1556 1406 15.97      
7 A' 1510 1364 12.78      
8 A' 1193 1077 7.51      
9 A' 1153 1042 39.64      
10 A' 953 861 3.67      
11 A' 449 406 6.82      
12 A" 3269 2954 69.15      
13 A" 3210 2900 20.63      
14 A" 1614 1458 2.26      
15 A" 1367 1235 0.38      
16 A" 924 834 0.47      
17 A" 264 239 5.25      
18 A" 153i 139i 19.18      

Unscaled Zero Point Vibrational Energy (zpe) 15069.3 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 13613.6 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/CEP-121G*
ABC
1.28571 0.31920 0.28229

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.056 -0.571 0.000
C2 0.000 0.535 0.000
O3 -1.311 0.050 0.000
H4 2.056 -0.141 0.000
H5 0.953 -1.199 0.880
H6 0.953 -1.199 -0.880
H7 0.096 1.179 0.874
H8 0.096 1.179 -0.874

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.52902.44751.08811.08631.08632.17922.1792
C21.52901.39792.16402.16502.16501.09021.0902
O32.44751.39793.37252.73132.73132.00442.0044
H41.08812.16403.37251.76381.76382.51982.5198
H51.08632.16502.73131.76381.76072.52743.0768
H61.08632.16502.73131.76381.76073.07682.5274
H72.17921.09022.00442.51982.52743.07681.7488
H82.17921.09022.00442.51983.07682.52741.7488

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 113.410 C1 C2 H7 111.510
C1 C2 H8 111.510 C2 C1 H4 110.429
C2 C1 H5 110.615 C2 C1 H6 110.615
O3 C2 H7 106.679 O3 C2 H8 106.679
H4 C1 H5 108.416 H4 C1 H6 108.416
H5 C1 H6 108.272 H7 C2 H8 106.648
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.476      
2 C -0.075      
3 O -0.254      
4 H 0.153      
5 H 0.162      
6 H 0.162      
7 H 0.164      
8 H 0.164      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.907 0.688 0.000 2.027
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.410 0.118 0.000
y 0.118 -18.930 0.000
z 0.000 0.000 -17.940
Traceless
 xyz
x -3.975 0.118 0.000
y 0.118 1.245 0.000
z 0.000 0.000 2.731
Polar
3z2-r25.461
x2-y2-3.480
xy0.118
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.958 -0.012 0.000
y -0.012 3.749 0.000
z 0.000 0.000 3.814


<r2> (average value of r2) Å2
<r2> 44.394
(<r2>)1/2 6.663