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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-29.486198
Energy at 298.15K-29.491468
HF Energy-29.486198
Nuclear repulsion energy42.862489
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' 3240 2957 55.23      
2 A' 3166 2889 17.75      
3 A' 3149 2873 43.27      
4 A' 1635 1492 8.29      
5 A' 1603 1463 4.93      
6 A' 1561 1425 13.43      
7 A' 1508 1376 11.89      
8 A' 1202 1097 8.07      
9 A' 1135 1035 33.23      
10 A' 940 858 7.19      
11 A' 443 405 8.66      
12 A" 3258 2973 68.37      
13 A" 3210 2929 7.33      
14 A" 1622 1480 4.20      
15 A" 1375 1255 0.47      
16 A" 968 884 0.00      
17 A" 367 335 22.80      
18 A" 218 199 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 15300.1 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 13961.3 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/CEP-121G
ABC
1.25321 0.31391 0.27661

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 1.079 -0.538 0.000
C2 0.000 0.546 0.000
O3 -1.333 0.001 0.000
H4 2.070 -0.089 0.000
H5 0.989 -1.168 0.879
H6 0.989 -1.168 -0.879
H7 0.069 1.186 0.876
H8 0.069 1.186 -0.876

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.52952.47151.08741.08531.08532.18232.1823
C21.52951.43972.16452.16492.16491.08761.0876
O32.47151.43973.40342.74392.74392.03412.0341
H41.08742.16453.40341.76231.76232.52892.5289
H51.08532.16492.74391.76231.75852.52773.0773
H61.08532.16492.74391.76231.75853.07732.5277
H72.18231.08762.03412.52892.52773.07731.7519
H82.18231.08762.03412.52893.07732.52771.7519

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 112.656 C1 C2 H7 111.887
C1 C2 H8 111.887 C2 C1 H4 110.469
C2 C1 H5 110.629 C2 C1 H6 110.629
O3 C2 H7 106.357 O3 C2 H8 106.357
H4 C1 H5 108.407 H4 C1 H6 108.407
H5 C1 H6 108.220 H7 C2 H8 107.305
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 -0.425      
2 C -0.101      
3 O -0.237      
4 H 0.139      
5 H 0.153      
6 H 0.153      
7 H 0.159      
8 H 0.159      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.302 0.882 0.000 2.465
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.212 -0.188 0.000
y -0.188 -18.874 0.000
z 0.000 0.000 -17.981
Traceless
 xyz
x -4.784 -0.188 0.000
y -0.188 1.723 0.000
z 0.000 0.000 3.061
Polar
3z2-r26.123
x2-y2-4.338
xy-0.188
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.904 0.077 0.000
y 0.077 3.548 0.000
z 0.000 0.000 3.735


<r2> (average value of r2) Å2
<r2> 45.051
(<r2>)1/2 6.712