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

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-29.479970
Energy at 298.15K 
HF Energy-29.479970
Nuclear repulsion energy42.741622
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 HF/CEP-31G
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' 3295 2970 82.85      
2 A' 3232 2914 27.75      
3 A' 3214 2897 52.41      
4 A' 1633 1472 8.53      
5 A' 1607 1449 5.03      
6 A' 1564 1410 12.27      
7 A' 1509 1360 10.16      
8 A' 1205 1086 9.43      
9 A' 1135 1023 30.91      
10 A' 943 850 5.90      
11 A' 441 398 8.59      
12 A" 3314 2988 106.06      
13 A" 3275 2952 8.08      
14 A" 1619 1459 4.20      
15 A" 1371 1236 1.12      
16 A" 955 861 0.16      
17 A" 248 223 4.94      
18 A" 276i 249i 31.83      

Unscaled Zero Point Vibrational Energy (zpe) 15142.3 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 13649.3 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 HF/CEP-31G
ABC
1.24295 0.31254 0.27524

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.081 -0.542 0.000
C2 0.000 0.549 0.000
O3 -1.335 0.002 0.000
H4 2.077 -0.093 0.000
H5 0.988 -1.173 0.883
H6 0.988 -1.173 -0.883
H7 0.068 1.191 0.879
H8 0.068 1.191 -0.879

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.53612.47661.09181.08921.08922.19112.1911
C21.53611.44222.17382.17282.17281.09011.0901
O32.47661.44223.41272.74872.74872.03762.0376
H41.09182.17383.41271.76951.76952.54082.5408
H51.08922.17282.74871.76951.76522.53673.0882
H61.08922.17282.74871.76951.76523.08822.5367
H72.19111.09012.03762.54082.53673.08821.7572
H82.19111.09012.03762.54083.08822.53671.7572

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 112.476 C1 C2 H7 111.973
C1 C2 H8 111.973 C2 C1 H4 110.483
C2 C1 H5 110.563 C2 C1 H6 110.563
O3 C2 H7 106.312 O3 C2 H8 106.312
H4 C1 H5 108.450 H4 C1 H6 108.450
H5 C1 H6 108.256 H7 C2 H8 107.401
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.251      
2 C -0.118      
3 O -0.241      
4 H 0.099      
5 H 0.114      
6 H 0.114      
7 H 0.141      
8 H 0.141      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.408 0.905 0.000 2.572
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.273 -0.105 0.000
y -0.105 -18.743 0.000
z 0.000 0.000 -17.787
Traceless
 xyz
x -5.008 -0.105 0.000
y -0.105 1.787 0.000
z 0.000 0.000 3.221
Polar
3z2-r26.441
x2-y2-4.530
xy-0.105
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.617 -0.010 0.000
y -0.010 3.207 0.000
z 0.000 0.000 3.286


<r2> (average value of r2) Å2
<r2> 45.170
(<r2>)1/2 6.721