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

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-152.350832
Energy at 298.15K-152.355799
HF Energy-152.350832
Nuclear repulsion energy71.922276
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 B3PW91/STO-3G
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' 3506 3102 0.73      
2 A' 3332 2949 0.59      
3 A' 3264 2888 4.25      
4 A' 1687 1493 4.35      
5 A' 1595 1412 5.34      
6 A' 1561 1382 2.62      
7 A' 1482 1311 8.88      
8 A' 1170 1035 3.81      
9 A' 1132 1002 7.67      
10 A' 962 851 2.96      
11 A' 412 365 1.51      
12 A" 3512 3108 1.00      
13 A" 3363 2976 5.82      
14 A" 1679 1486 2.86      
15 A" 1352 1196 1.69      
16 A" 919 813 0.14      
17 A" 377 334 33.49      
18 A" 190 168 0.93      

Unscaled Zero Point Vibrational Energy (zpe) 15746.8 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 13935.9 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 B3PW91/STO-3G
ABC
1.24553 0.29853 0.26513

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.095 -0.573 0.000
C2 0.000 0.539 0.000
O3 -1.366 0.044 0.000
H4 2.096 -0.117 0.000
H5 1.000 -1.208 0.892
H6 1.000 -1.208 -0.892
H7 0.130 1.191 0.893
H8 0.130 1.191 -0.893

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.56082.53771.09981.09911.09912.20042.2004
C21.56081.45292.19642.20162.20161.11341.1134
O32.53771.45293.46602.82172.82172.08582.0858
H41.09982.19643.46601.78551.78552.52492.5249
H51.09912.20162.82171.78551.78402.55213.1144
H61.09912.20162.82171.78551.78403.11442.5521
H72.20041.11342.08582.52492.55213.11441.7859
H82.20041.11342.08582.52493.11442.55211.7859

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 114.671 C1 C2 H7 109.601
C1 C2 H8 109.601 C2 C1 H4 110.077
C2 C1 H5 110.525 C2 C1 H6 110.525
O3 C2 H7 108.005 O3 C2 H8 108.005
H4 C1 H5 108.579 H4 C1 H6 108.579
H5 C1 H6 108.496 H7 C2 H8 106.643
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.239      
2 C -0.079      
3 O -0.097      
4 H 0.080      
5 H 0.081      
6 H 0.081      
7 H 0.087      
8 H 0.087      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.139 0.458 0.000 1.228
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.342 0.077 0.000
y 0.077 -17.250 0.000
z 0.000 0.000 -16.618
Traceless
 xyz
x -2.408 0.077 0.000
y 0.077 0.730 0.000
z 0.000 0.000 1.678
Polar
3z2-r23.356
x2-y2-2.092
xy0.077
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.181 0.074 0.000
y 0.074 1.724 0.000
z 0.000 0.000 1.941


<r2> (average value of r2) Å2
<r2> 52.318
(<r2>)1/2 7.233