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Experimental data for Li2O+ (dilithium oxide cation)

22 02 02 11 45
Other names
lithium oxide;
INChI INChIKey SMILES IUPAC name
InChI=1S/2Li.O XZIUWXMPQBQHMC-UHFFFAOYSA-N [Li]O[Li] lithium oxide
InChI=1/2Li.O/rLi2O/c1-3-2 XZIUWXMPQBQHMC-GBJCHMORNA-N [Li]O[Li] lithium oxide
State Conformation
1Σg D*H
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation -166.94   kJ mol-1 webbook
Hfg(0K) enthalpy of formation     kJ mol-1 webbook
Entropy (298.15K) entropy 229.11   J K-1 mol-1 webbook
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
1 Σg 779   webbook      
2 Σu 964   webbook      
3 Πu 112   webbook      

vibrational zero-point energy: 983.2 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for Li2O+ (dilithium oxide cation).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
  0.46550 0.46550 2001Bel/Bre:2871

Calculated rotational constants for Li2O+ (dilithium oxide cation).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of dilithium oxide cation

Point Group D∞h


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rLiO 1.606 0.008 1 2 2001Bel/Bre:2871
aOLiO 180 2 1 3

Cartesians
Atom x (Å) y (Å) z (Å)
O1 0.0000 0.0000 0.0000
Li2 0.0000 0.0000 1.6060
Li3 0.0000 0.0000 -1.6060

Atom - Atom Distances bond lengths
Distances in Å
  O1 Li2 Li3
O1   1.60601.6060
Li2 1.6060   3.2120
Li3 1.60603.2120  

Calculated geometries for Li2O+ (dilithium oxide cation).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle
Li2 O1 Li3 180.000

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
Li-O 2

Connectivity
Atom 1 Atom 2
O1 Li2
O1 Li3
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1Σg

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
6.000       webbook
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1Σg D∞h True           D∞h 0 1
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for Li2O+ (dilithium oxide cation).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1Σg D∞h True       D∞h 0 1

Calculated electric quadrupole moments for Li2O+ (dilithium oxide cation).

References
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squib reference DOI
2001Bel/Bre:2871 D Bellert, WH Breckenridge, "A spectroscopic determination of the bond length of the LiOLi molecule: Strong ionic bonding" J. Chem. Phys. 114(7), 2871, 2001 10.1063/1.1349424
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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