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

using model chemistry: ROHF/6-31G*

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/6-31G*
 hartrees
Energy at 0K-153.460936
Energy at 298.15K-153.466078
HF Energy-153.460936
Nuclear repulsion energy74.260504
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/6-31G*
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' 3274 2915 41.26      
2 A' 3210 2858 14.20      
3 A' 3187 2838 36.70      
4 A' 1642 1462 3.58      
5 A' 1599 1424 7.72      
6 A' 1569 1397 13.32      
7 A' 1530 1362 9.93      
8 A' 1208 1076 8.61      
9 A' 1164 1036 32.94      
10 A' 966 860 2.52      
11 A' 456 406 6.59      
12 A" 3286 2926 47.65      
13 A" 3220 2867 17.90      
14 A" 1629 1450 1.80      
15 A" 1381 1229 0.88      
16 A" 943 840 0.28      
17 A" 299 266 16.42      
18 A" 193 171 7.88      

Unscaled Zero Point Vibrational Energy (zpe) 15377.8 cm-1
Scaled (by 0.8904) Zero Point Vibrational Energy (zpe) 13692.4 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/6-31G*
ABC
1.29539 0.32331 0.28582

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.048 -0.570 0.000
C2 0.000 0.532 0.000
O3 -1.302 0.052 0.000
H4 2.049 -0.148 0.000
H5 0.941 -1.197 0.878
H6 0.941 -1.197 -0.878
H7 0.097 1.176 0.872
H8 0.097 1.176 -0.872

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.52062.43071.08591.08451.08452.17032.1703
C21.52061.38762.15852.15542.15541.08801.0880
O32.43071.38763.35642.71322.71321.99511.9951
H41.08592.15853.35641.76021.76022.51382.5138
H51.08452.15542.71321.76021.75692.51793.0665
H61.08452.15542.71321.76021.75693.06652.5179
H72.17031.08801.99512.51382.51793.06651.7437
H82.17031.08801.99512.51383.06652.51791.7437

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 113.319 C1 C2 H7 111.527
C1 C2 H8 111.527 C2 C1 H4 110.704
C2 C1 H5 110.546 C2 C1 H6 110.546
O3 C2 H7 106.774 O3 C2 H8 106.774
H4 C1 H5 108.386 H4 C1 H6 108.386
H5 C1 H6 108.189 H7 C2 H8 106.517
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.496      
2 C -0.029      
3 O -0.341      
4 H 0.158      
5 H 0.174      
6 H 0.174      
7 H 0.180      
8 H 0.180      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.846 0.664 0.000 1.962
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.243 0.118 0.000
y 0.118 -18.818 0.000
z 0.000 0.000 -17.987
Traceless
 xyz
x -3.840 0.118 0.000
y 0.118 1.297 0.000
z 0.000 0.000 2.543
Polar
3z2-r25.086
x2-y2-3.425
xy0.118
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> 50.810
(<r2>)1/2 7.128