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

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at G4
 hartrees
Energy at 0K-154.269696
Energy at 298.15K-154.264900
HF Energy-154.382467
Nuclear repulsion energy74.095327
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 B3LYP/6-31G(2df,p)
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' 3112 3003 21.55      
2 A' 3039 2933 12.75      
3 A' 2889 2788 27.29      
4 A' 1495 1443 3.98      
5 A' 1405 1356 18.29      
6 A' 1390 1341 16.87      
7 A' 1335 1288 10.66      
8 A' 1097 1058 4.91      
9 A' 1080 1042 14.95      
10 A' 888 857 0.58      
11 A' 425 410 5.95      
12 A" 3121 3012 19.42      
13 A" 2897 2796 8.33      
14 A" 1486 1434 3.62      
15 A" 1238 1195 0.13      
16 A" 850 820 0.07      
17 A" 243 234 9.99      
18 A" 210i 203i 31.16      

Unscaled Zero Point Vibrational Energy (zpe) 13889.5 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 13403.3 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 B3LYP/6-31G(2df,p)
ABC
1.32586 0.31794 0.28309

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.041 -0.608 0.000
C2 0.000 0.511 0.000
O3 -1.303 0.109 0.000
H4 2.057 -0.198 0.000
H5 0.923 -1.239 0.886
H6 0.923 -1.239 -0.886
H7 0.137 1.192 0.866
H8 0.137 1.192 -0.866

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.52832.45121.09521.09381.09382.19292.1929
C21.52831.36352.17532.16752.16751.11051.1105
O32.45121.36353.37352.74882.74881.99901.9990
H41.09522.17533.37351.77561.77562.52362.5236
H51.09382.16752.74881.77561.77172.55503.0980
H61.09382.16752.74881.77561.77173.09802.5550
H72.19291.11051.99902.52362.55503.09801.7325
H82.19291.11051.99902.52363.09802.55501.7325

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 115.000 C1 C2 H7 111.644
C1 C2 H8 111.644 C2 C1 H4 111.246
C2 C1 H5 110.310 C2 C1 H6 110.310
O3 C2 H7 106.706 O3 C2 H8 106.706
H4 C1 H5 108.340 H4 C1 H6 108.340
H5 C1 H6 108.207 H7 C2 H8 104.439
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.386      
2 C -0.024      
3 O -0.231      
4 H 0.113      
5 H 0.130      
6 H 0.130      
7 H 0.134      
8 H 0.134      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.797 0.589 0.000 1.891
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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> 51.018
(<r2>)1/2 7.143