查看“︁亚锰酸镧”︁的源代码

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| ImageFile = LaMnO3 unit cell.png
|  ImageSize = 
|  ImageAlt = 
| IUPACName = 
| OtherNames = 锰(III)酸镧<BR>氧化锰(III)镧
| Section1 = {{Chembox Identifiers
|  CASNo = 12031-12-8
| CASNo_Ref= {{cascite|correct|CAS}}
|  PubChem = 
|  SMILES = [La+3].[O-][Mn]([O-])[O-]
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| Section2 = {{Chembox Properties
|  Formula = LaMnO<sub>3</sub>
|  MolarMass = 241.84
|  Appearance = 
|  Density = 
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|  BoilingPt = 
|  Solubility = 
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| Section3 = {{Chembox Hazards
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|  AutoignitionPt = 
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}}

'''亚锰酸镧'''是一种[[无机化合物]]，[[化学式]]为LaMnO<sub>3</sub>，简写'''LMO'''。亚锰酸镧具有[[钙钛矿 (结构)|钙钛矿结构]]，由中心[[锰]]原子和[[氧]][[八面體]]构成。立方晶系的钙钛矿结构由于受到氧八面体强烈的[[姜-泰勒效应]]，被扭曲为正交晶系的结构。<ref>{{cite journal |author=S. Satpathy |year=1996 |journal=[[物理评论快报|Physical Review Letters]] |title=Electronic Structure of the Perovskite Oxides: La<sub>1−x</sub>Ca<sub>x</sub>MnO<sub>3</sub> |url=http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.76.960 |volume=76 |pages=960 |doi=10.1103/PhysRevLett.76.960 |display-authors=etal |access-date=2019-01-07 |archive-date=2017-06-10 |archive-url=https://web.archive.org/web/20170610051736/https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.76.960 |dead-url=no }}</ref>

==制备==
亚锰酸镧可由对应氧化物或碳酸盐的高温反应制备。<ref>{{cite journal|last1=Bockris|first1=John O'M.|last2=Otagawa|first2=Takaaki|title=Mechanism of oxygen evolution on perovskites|journal=The Journal of Physical Chemistry|volume=87|issue=15|year=2002|pages=2960–2971|issn=0022-3654|doi=10.1021/j100238a048}}</ref>
:<math>\mathrm{\ 2 \ La_2O_3 + 4 \ MnCO_3 + O_2 \longrightarrow 4 \ LaMnO_3 + \ 4 \ CO_2}</math>
:<math>\mathrm{La_2O_3 + Mn_2O_3 \longrightarrow \ 2 \ LaMnO_3}</math>

将硝酸镧和硝酸锰混合，蒸去溶剂后高温反应，也能得到亚锰酸镧。<ref>{{cite journal|last1=Liu|first1=Yuxi|last2=Dai|first2=Hongxing|last3=Du|first3=Yucheng|last4=Deng|first4=Jiguang|last5=Zhang|first5=Lei|last6=Zhao|first6=Zhenxuan|last7=Au|first7=Chak Tong|title=Controlled preparation and high catalytic performance of three-dimensionally ordered macroporous LaMnO3 with nanovoid skeletons for the combustion of toluene|journal=Journal of Catalysis|volume=287|year=2012|pages=149–160|issn=00219517|doi=10.1016/j.jcat.2011.12.015}}</ref>

==参见==
* [[姜-泰勒效应]]
* {{le|电子关联|Electron correlation}}
* [[锰酸锶镧|锰酸镧锶]]

==参考文献==
{{reflist}}

{{镧化合物}}
{{锰化合物}}

[[Category:镧化合物]]
[[Category:锰-氧化合物]]
[[Category:钙钛矿结构]]

{{inorganic-compound-stub}}