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

using model chemistry: ROHF/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-153.521961
Energy at 298.15K 
HF Energy-153.521961
Nuclear repulsion energy74.375240
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/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3221 3221 39.82      
2 A' 3162 3162 14.67      
3 A' 3137 3137 30.67      
4 A' 1614 1614 4.46      
5 A' 1568 1568 9.22      
6 A' 1541 1541 14.53      
7 A' 1505 1505 7.06      
8 A' 1193 1193 7.08      
9 A' 1148 1148 36.30      
10 A' 953 953 2.41      
11 A' 457 457 5.83      
12 A" 3233 3233 46.53      
13 A" 3163 3163 13.73      
14 A" 1599 1599 3.46      
15 A" 1367 1367 0.28      
16 A" 921 921 0.01      
17 A" 262 262 2.97      
18 A" 204i 204i 13.55      

Unscaled Zero Point Vibrational Energy (zpe) 14919.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14919.9 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 ROHF/aug-cc-pVTZ
ABC
1.30642 0.32342 0.28637

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.047 -0.571 0.000
C2 0.000 0.528 0.000
O3 -1.301 0.057 0.000
H4 2.043 -0.143 0.000
H5 0.943 -1.197 0.878
H6 0.943 -1.197 -0.878
H7 0.100 1.172 0.870
H8 0.100 1.172 -0.870

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.51752.43051.08451.08311.08312.16612.1661
C21.51751.38402.15082.15282.15281.08751.0875
O32.43051.38403.35082.71662.71661.99101.9910
H41.08452.15083.35081.75801.75802.50322.5032
H51.08312.15282.71661.75801.75562.51453.0625
H61.08312.15282.71661.75801.75563.06252.5145
H72.16611.08751.99102.50322.51453.06251.7408
H82.16611.08751.99102.50323.06252.51451.7408

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 113.717 C1 C2 H7 111.450
C1 C2 H8 111.450 C2 C1 H4 110.402
C2 C1 H5 110.639 C2 C1 H6 110.639
O3 C2 H7 106.728 O3 C2 H8 106.728
H4 C1 H5 108.398 H4 C1 H6 108.398
H5 C1 H6 108.287 H7 C2 H8 106.334
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.923      
2 C -0.091      
3 O -0.492      
4 H 0.315      
5 H 0.284      
6 H 0.284      
7 H 0.311      
8 H 0.311      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.865 0.626 0.000 1.967
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.360 0.068 0.000
y 0.068 -18.949 0.000
z 0.000 0.000 -18.005
Traceless
 xyz
x -3.883 0.068 0.000
y 0.068 1.234 0.000
z 0.000 0.000 2.649
Polar
3z2-r25.299
x2-y2-3.411
xy0.068
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> 50.787
(<r2>)1/2 7.126