National Institute of Standards and Technology
Computational Chemistry Comparison and Benchmark DataBase
Release 17bSeptember 2015
NIST Standard Reference Database 101
IIExperimental data
IIICalculated data
IVData comparisons
VCost comparisons
VIInput and output files
VIITutorials and Units
VIIILinks to other sites
XOlder CCCBDB versions
XIII Vibrations
XIVReaction data
XVEntropy data
XVIBibliographic data
XVIIIon data
XVIIIBad calculations
XIXIndex of properties
XXH-bond dimers

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II.A.3. (XII.A.1.)

Listing of experimental geometry data for CH3CH2O (Ethoxy radical)

Rotational Constants (cm-1)

See section I.F.4 to change rotational constant units
Rotational Constants from
Calculated rotational constants for CH3CH2O (Ethoxy radical).

Point Group Cs

Internal coordinates

(distances (r) in Å) (angles (a) in degrees) (dihedrals (d) in degrees)
Description Value Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rCH 1.086 2 4 1995Kuchitsu(II/23) C w/o O, opp O
rCH 1.085 2 5 1995Kuchitsu(II/23) C w/o O
rCC 1.521 2 3 1995Kuchitsu(II/23)
rCH 1.088 3 7 1995Kuchitsu(II/23) C with O
rCO 1.388 1 3 1995Kuchitsu(II/23)
aHCH 108.1 4 2 5 1995Kuchitsu(II/23) C w/o O
aHCC 110.8 3 2 4 1995Kuchitsu(II/23) H opp O, other C
aHCH 106.5 7 3 8 1995Kuchitsu(II/23) on C with O
aCCO 114.4 1 3 2 1995Kuchitsu(II/23)
picture of Ethoxy radical

Bond descriptions

Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-C 5
C-C 1
C-O 1

Atom x (Å) y (Å) z (Å)

Atom - Atom Distances (Å)


Calculated geometries for CH3CH2O (Ethoxy radical).
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squib reference DOI
1995Kuchitsu(II/23) Kuchitsu (ed.), Landolt-Bornstein: Group II: Molecules and Radicals Volume 23: Structure Data for Free Polyatomic Molecules. Springer. Berlin. 1995  

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