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

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-153.468775
Energy at 298.15K 
HF Energy-153.468775
Nuclear repulsion energy73.030031
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 B3PW91/3-21G
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' 3139 3017 17.93      
2 A' 3064 2946 10.70      
3 A' 2964 2849 25.06      
4 A' 1557 1496 9.14      
5 A' 1473 1415 16.18      
6 A' 1450 1394 15.86      
7 A' 1361 1309 2.46      
8 A' 1115 1072 6.49      
9 A' 1020 981 17.16      
10 A' 863 829 0.30      
11 A' 394 378 5.99      
12 A" 3148 3026 16.83      
13 A" 2987 2871 6.83      
14 A" 1548 1487 6.26      
15 A" 1287 1237 1.37      
16 A" 907 872 0.29      
17 A" 252 243 11.07      
18 A" 304i 292i 47.25      

Unscaled Zero Point Vibrational Energy (zpe) 14112.6 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 13565.0 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 B3PW91/3-21G
ABC
1.26884 0.31088 0.27534

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.076 -0.558 0.000
C2 0.000 0.531 0.000
O3 -1.336 0.033 0.000
H4 2.078 -0.112 0.000
H5 0.972 -1.190 0.888
H6 0.972 -1.190 -0.888
H7 0.105 1.194 0.878
H8 0.105 1.194 -0.878

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.53102.48401.09611.09501.09502.18732.1873
C21.53101.42592.17452.16672.16671.10541.1054
O32.48401.42593.41682.75912.75912.04872.0487
H41.09612.17453.41681.78171.78172.52302.5230
H51.09502.16672.75911.78171.77602.53713.0911
H61.09502.16672.75911.78171.77603.09112.5371
H72.18731.10542.04872.52302.53713.09111.7555
H82.18731.10542.04872.52303.09112.53711.7555

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 114.252 C1 C2 H7 111.096
C1 C2 H8 111.096 C2 C1 H4 110.642
C2 C1 H5 110.085 C2 C1 H6 110.085
O3 C2 H7 107.386 O3 C2 H8 107.386
H4 C1 H5 108.801 H4 C1 H6 108.801
H5 C1 H6 108.376 H7 C2 H8 105.125
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.646      
2 C -0.211      
3 O -0.291      
4 H 0.205      
5 H 0.228      
6 H 0.228      
7 H 0.243      
8 H 0.243      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.866 0.750 0.000 2.011
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.931 0.074 0.000
y 0.074 -18.226 0.000
z 0.000 0.000 -17.770
Traceless
 xyz
x -3.933 0.074 0.000
y 0.074 1.625 0.000
z 0.000 0.000 2.309
Polar
3z2-r24.617
x2-y2-3.705
xy0.074
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.801 0.076 0.000
y 0.076 3.309 0.000
z 0.000 0.000 3.483


<r2> (average value of r2) Å2
<r2> 51.907
(<r2>)1/2 7.205