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

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-153.485650
Energy at 298.15K 
HF Energy-153.485650
Nuclear repulsion energy73.144987
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 mPW1PW91/3-21G*
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' 3159 3000 16.78      
2 A' 3083 2927 10.08      
3 A' 2993 2842 23.43      
4 A' 1565 1486 9.44      
5 A' 1484 1410 15.54      
6 A' 1459 1386 16.10      
7 A' 1373 1304 2.47      
8 A' 1123 1067 6.84      
9 A' 1031 980 16.97      
10 A' 872 828 0.19      
11 A' 396 376 6.06      
12 A" 3167 3008 15.90      
13 A" 3019 2867 6.03      
14 A" 1555 1477 6.33      
15 A" 1296 1231 1.47      
16 A" 914 868 0.34      
17 A" 256 243 11.48      
18 A" 295i 280i 44.22      

Unscaled Zero Point Vibrational Energy (zpe) 14225.4 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 13508.4 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 mPW1PW91/3-21G*
ABC
1.26727 0.31259 0.27654

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.075 -0.553 0.000
C2 0.000 0.533 0.000
O3 -1.333 0.027 0.000
H4 2.074 -0.107 0.000
H5 0.970 -1.184 0.887
H6 0.970 -1.184 -0.887
H7 0.101 1.193 0.877
H8 0.101 1.193 -0.877

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.52782.47691.09441.09351.09352.18372.1837
C21.52781.42602.17092.16242.16241.10281.1028
O32.47691.42603.41032.74952.74952.04602.0460
H41.09442.17093.41031.77911.77912.52132.5213
H51.09352.16242.74951.77911.77342.53173.0857
H61.09352.16242.74951.77911.77343.08572.5317
H72.18371.10282.04602.52132.53173.08571.7547
H82.18371.10282.04602.52133.08572.53171.7547

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 113.935 C1 C2 H7 111.192
C1 C2 H8 111.192 C2 C1 H4 110.675
C2 C1 H5 110.064 C2 C1 H6 110.064
O3 C2 H7 107.324 O3 C2 H8 107.324
H4 C1 H5 108.807 H4 C1 H6 108.807
H5 C1 H6 108.372 H7 C2 H8 105.412
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.656      
2 C -0.216      
3 O -0.293      
4 H 0.209      
5 H 0.232      
6 H 0.232      
7 H 0.246      
8 H 0.246      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.870 0.757 0.000 2.017
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.933 0.054 0.000
y 0.054 -18.235 0.000
z 0.000 0.000 -17.761
Traceless
 xyz
x -3.935 0.054 0.000
y 0.054 1.612 0.000
z 0.000 0.000 2.323
Polar
3z2-r24.646
x2-y2-3.698
xy0.054
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.746 0.071 0.000
y 0.071 3.279 0.000
z 0.000 0.000 3.453


<r2> (average value of r2) Å2
<r2> 51.739
(<r2>)1/2 7.193