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

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-153.325810
Energy at 298.15K 
HF Energy-153.325810
Nuclear repulsion energy72.718709
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 PBEPBE/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' 3064 3036 18.79      
2 A' 2988 2961 11.40      
3 A' 2832 2806 30.83      
4 A' 1515 1501 8.21      
5 A' 1410 1397 15.36      
6 A' 1399 1387 20.15      
7 A' 1298 1286 3.14      
8 A' 1078 1068 5.91      
9 A' 993 983 17.79      
10 A' 838 831 1.57      
11 A' 382 378 6.05      
12 A" 3072 3044 16.26      
13 A" 2845 2820 9.07      
14 A" 1506 1492 6.63      
15 A" 1236 1224 1.02      
16 A" 867 859 0.13      
17 A" 234 232 9.20      
18 A" 368i 365i 63.22      

Unscaled Zero Point Vibrational Energy (zpe) 13593.8 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 13470.1 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 PBEPBE/3-21G
ABC
1.27040 0.30691 0.27255

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.075 -0.579 0.000
C2 0.000 0.525 0.000
O3 -1.341 0.061 0.000
H4 2.088 -0.139 0.000
H5 0.963 -1.215 0.895
H6 0.963 -1.215 -0.895
H7 0.131 1.204 0.880
H8 0.131 1.204 -0.880

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8
C11.54122.50001.10421.10331.10332.20112.2011
C21.54121.41892.19132.18042.18041.11881.1188
O32.50001.41893.43522.78152.78152.06052.0605
H41.10422.19133.43521.79561.79562.53152.5315
H51.10332.18042.78151.79561.78912.55793.1129
H61.10332.18042.78151.79561.78913.11292.5579
H72.20111.11882.06052.53152.55793.11291.7591
H82.20111.11882.06052.53153.11292.55791.7591

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 115.184 C1 C2 H7 110.674
C1 C2 H8 110.674 C2 C1 H4 110.772
C2 C1 H5 109.970 C2 C1 H6 109.970
O3 C2 H7 107.991 O3 C2 H8 107.991
H4 C1 H5 108.863 H4 C1 H6 108.863
H5 C1 H6 108.352 H7 C2 H8 103.647
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.623      
2 C -0.209      
3 O -0.276      
4 H 0.196      
5 H 0.220      
6 H 0.220      
7 H 0.236      
8 H 0.236      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.810 0.717 0.000 1.947
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.921 0.178 0.000
y 0.178 -18.256 0.000
z 0.000 0.000 -17.889
Traceless
 xyz
x -3.849 0.178 0.000
y 0.178 1.649 0.000
z 0.000 0.000 2.200
Polar
3z2-r24.399
x2-y2-3.666
xy0.178
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.058 0.078 0.000
y 0.078 3.434 0.000
z 0.000 0.000 3.585


<r2> (average value of r2) Å2
<r2> 52.378
(<r2>)1/2 7.237