Difference between revisions of "Lithium manganite"

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| IUPACName = lithium manganese dioxide
 
| IUPACName = lithium manganese dioxide
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|  InChI=1/Li.Mn.2O/q+1;+3;2*-2
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|  Formula = LiMnO<sub>2</sub>
 
|  Formula = LiMnO<sub>2</sub>
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'''Lithium manganite''', LiMnO<sub>2</sub>, is a [[mixed oxide]] of [[lithium]] and [[manganese]](III). It adopts a distorted [[Halite structure|halite (NaCl)]] structure, with the MnO<sub>6</sub> octahedra being distorted by the [[Jahn–Teller effect]] of the d<sup>4</sup> Mn<sup>3+</sup> cation.<ref name="beta"/>
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'''Lithium manganite''' can refer to any of several [[mixed oxide]]s of [[lithium]] and [[manganese]].
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LiMnO<sub>2</sub> is a mixed oxide of lithium and manganese(III). It adopts a distorted [[Halite structure|halite (NaCl)]] structure, with the MnO<sub>6</sub> octahedra being distorted by the [[Jahn–Teller effect]] of the d<sup>4</sup> Mn<sup>3+</sup> cation.<ref name="beta"/>
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LiMn<sub>2</sub>O<sub>4</sub> contains both manganese(III) and manganese(IV). It adopts a [[Spinel structure|spinel-type]] structure.<ref>{{citation | first1 = Young-Sik | last1 = Hong | first2 = Hyu-Bum | last2 = Park | first3 = Ji-Eun | last3 = Yi | first4 = Chi-Hwan | last4 = Han | first5 = Si-Joong | last5 = Kim | title = Characterization of Spinel Lithium Manganite Prepared by Citrate Sol-Gel Merthod | journal = Bull. Korean Chem. Soc. | volume = 18 | issue = 11 | year = 1997 | pages = 1153–58 | url = http://pdf.easechem.com/pdf/32/d27d3506-99cd-4b7f-aec8-a5868d8e100b.pdf}}.</ref>
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Li<sub>2</sub>MnO<sub>3</sub> is a manganese(IV) compound: it has been investicated as an electrode material in molten carbonate fuel cells.<ref>{{citation | title = Lithium manganite development as a molten carbonate fuel cell cathode | last1 = Smith | first1 = J. L. | last2 = Kucera | first2 = G. H. | last3 = Brown | first3 = A. P. | year = 1991 | id = EPRI-GS-7288 | publisher = Electric Power Research Institute | location = Palo Alto, CA | url = http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=5739101}}.</ref>
  
 
==References==
 
==References==
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[[Category:Lithium compounds]]
 
[[Category:Lithium compounds]]
[[Category:Manganese compounds]]
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[[Category:Manganites]]
[[Category:Mixed oxides]]
 
  
 
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{{CC-BY-3.0}}

Latest revision as of 16:54, 19 September 2010

Lithium manganite
IUPAC name lithium manganese dioxide
Identifiers
InChI InChI=1/Li.Mn.2O/q+1;+3;2*-2
Properties
Chemical formula LiMnO2
Molar mass 93.878 g mol−1
Structure[1]
Crystal structure Distorted halite (NaCl)
Space group Pmnm
Lattice constant a = 280(5) pm, b = 575(7) pm, c = 457(2) pm
Coordination geometry Distorted octahedral (Li+, Mn3+)
Distorted octahedral (O2−)
Related compounds
Other anions Lithium manganate
Lithium permanganate
Other cations Sodium manganite
Potassium manganite
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Lithium manganite can refer to any of several mixed oxides of lithium and manganese.

LiMnO2 is a mixed oxide of lithium and manganese(III). It adopts a distorted halite (NaCl) structure, with the MnO6 octahedra being distorted by the Jahn–Teller effect of the d4 Mn3+ cation.[1]

LiMn2O4 contains both manganese(III) and manganese(IV). It adopts a spinel-type structure.[2]

Li2MnO3 is a manganese(IV) compound: it has been investicated as an electrode material in molten carbonate fuel cells.[3]

References

  1. 1.0 1.1 Hoppe, R.; Brachtel, G.; Jansen, M. Zur Kenntnis der Oxomanganate(III): Über LiMnO2 und β-NaMnO2. Z. Anorg. Allg. Chem. 1975, 417 (1), 1–10. DOI: 10.1002/zaac.19754170102.
  2. Hong, Young-Sik; Park, Hyu-Bum; Yi, Ji-Eun; Han, Chi-Hwan; Kim, Si-Joong Characterization of Spinel Lithium Manganite Prepared by Citrate Sol-Gel Merthod. Bull. Korean Chem. Soc. 1997, 18 (11), 1153–58, <http://pdf.easechem.com/pdf/32/d27d3506-99cd-4b7f-aec8-a5868d8e100b.pdf>.
  3. Smith, J. L.; Kucera, G. H.; Brown, A. P. Lithium manganite development as a molten carbonate fuel cell cathode; Electric Power Research Institute: Palo Alto, CA, 1991. EPRI-GS-7288, <http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=5739101>.
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