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MgCu2 - 版本历史
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imported>Vack Xu 来自 2025年8月20日 (三) 08:33
2025-08-20T08:33:53Z
<p></p>
<p><b>新页面</b></p><div>{{DISPLAYTITLE:MgCu<sub>2</sub>}}<br />
{{Chembox<br />
| Name=MgCu<sub>2</sub><br />
| ImageFile = C15-MgCu2(1).jpg<br />
| ImageSize = <br />
| ImageAlt = <br />
| IUPACName = <br />
| OtherNames = Cu<sub>2</sub>Mg<br />
| Section1 = {{Chembox Identifiers<br />
| CASNo = 12054-17-0<br />
| CASNo_Ref = {{cascite|correct|CAS}}<br />
| ChemSpiderID = 57534863<br />
| PubChem = 71355210<br />
| DTXSID = DTXSID40779642<br />
| StdInChI=1S/2Cu.Mg<br />
| StdInChIKey = BSBUOWMDDLTWGL-UHFFFAOYSA-N<br />
| SMILES = [Mg].[Cu].[Cu]<br />
}}<br />
| Section2 = {{Chembox Properties<br />
| Mg=1 | Cu=2<br />
| Appearance = <br />
| Density = 5.76 g·cm<sup>−3</sup><ref>{{cite journal|last1=Cheng|first1=C.H.|title=The elastic constants of MgAg and MgCu<sub>2</sub> single crystals|journal=Journal of Physics and Chemistry of Solids|volume=28|issue=3|year=1967|pages=413–416|issn=00223697|doi=10.1016/0022-3697(67)90307-1}}</ref><br />
| MeltingPt = 520 {{formatnum:}}&deg;C<ref>{{cite journal|last1=Chen|first1=W.|last2=Sun|first2=J.|title=The electronic structure and mechanical properties of MgCu<sub>2</sub> Laves phase compound|journal=Physica B: Condensed Matter|volume=382|issue=1-2|year=2006|pages=279–284|issn=09214526|doi=10.1016/j.physb.2006.02.031}}</ref><br />
| BoilingPt = <br />
| Solubility = <br />
}}<br />
| Section3 = {{Chembox Hazards<br />
| MainHazards = <br />
| FlashPt = <br />
| AutoignitionPt = <br />
}}<br />
}}<br />
'''MgCu<sub>2</sub>'''是由[[镁]]和[[铜]]构成的二元[[金属间化合物]]，属[[立方晶系]]，其空间群为Fd{{overline|3}}m，晶胞参数a = 7.04 Å。<ref>{{cite journal|last1=Ganeshan|first1=S.|last2=Shang|first2=S.L.|last3=Zhang|first3=H.|last4=Wang|first4=Y.|last5=Mantina|first5=M.|last6=Liu|first6=Z.K.|title=Elastic constants of binary Mg compounds from first-principles calculations|journal=Intermetallics|volume=17|issue=5|year=2009|pages=313–318|issn=09669795|doi=10.1016/j.intermet.2008.11.005}}</ref>MgCu<sub>2</sub>也是一类化合物的结构类型，具有这一结构的有LaNi<sub>2</sub>、CeFe<sub>2</sub>、CeOs<sub>2</sub>、EuIr<sub>2</sub>、EuPt<sub>2</sub>、TmRh<sub>2</sub>等。<ref>{{cite journal|last1=Morozkin|first1=A.V.|last2=Seropegin|first2=Yu.D.|last3=Gribanov|first3=A.V.|last4=Barakatova|first4=J.M.|title=Analysis of the melting temperatures of RT<sub>2</sub> compounds (MgCu<sub>2</sub> structure) (R=Rare Earth, T=Mn, Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt) and RT<sub>2</sub>X<sub>2</sub> compounds (R=La, Ce, Sm, Er; T=Mn, Fe, Co, Ni, Cu, Ru, Rh, Pd, Pt; X=Si, Ge)|url=https://archive.org/details/sim_journal-of-alloys-and-compounds_1997-07-05_256_1-2/page/n204|journal=Journal of Alloys and Compounds|volume=256|issue=1-2|year=1997|pages=175–191|issn=09258388|doi=10.1016/S0925-8388(96)03017-4}}</ref><br />
<br />
==制备==<br />
MgCu<sub>2</sub>可由Mg<sub>2</sub>Cu的氢化反应，或[[铜]]和[[氢化镁]]在高温和压强下反应得到：<ref>{{cite journal|last1=Shibata|first1=Kazuya|last2=Tanaka|first2=Koji|last3=Kurumatani|first3=Kosuke|last4=Nishida|first4=Yasuki|last5=Takeshita|first5=Hiroyuki T.|title=Thermodynamic Evaluation for Formation of MgCu<sub>2</sub> from MgH<sub>2</sub> and Cu|year=2013|pages=221–226|doi=10.1002/9781118792148.ch28}}</ref><br />
: 2 Mg<sub>2</sub>Cu + 3 H<sub>2</sub> → 3 MgH<sub>2</sub> + MgCu<sub>2</sub><br />
: MgH<sub>2</sub> + 2 Cu → MgCu<sub>2</sub> + H<sub>2</sub>↑<br />
<br />
MgCu<sub>2</sub>也可以由化学计量比的单质在过量铜的存在下于380 {{formatnum:}}&deg;C反应制得。<ref>{{cite journal|last1=Arcot|first1=Binny|last2=Cabral|first2=C.|last3=Harper|first3=J. M. E.|last4=Murarka|first4=S. P.|title=Intermetallic Reactions Between Copper and Magnesium as an Adhesion / Barrier Layer|journal=MRS Proceedings|volume=225|year=2011|issn=0272-9172|doi=10.1557/PROC-225-231}}</ref><br />
<br />
==性质==<br />
MgCu<sub>2</sub>可以和[[硼]]或其氧化物反应，生成镁的硼化物。<ref>{{cite journal|last1=Birol|first1=Yucel|title=Response to Thermal Exposure of Ball-Milled Cu-Mg/B<sub>2</sub>O<sub>3</sub> Powder Blends|journal=Metallurgical and Materials Transactions B|volume=44|issue=4|year=2013|pages=969–973|issn=1073-5615|doi=10.1007/s11663-013-9860-6}}</ref><br />
: Cu<sub>2</sub>Mg + 2 B → 2 Cu + MgB<sub>2</sub><br />
: Cu<sub>2</sub>Mg + 6 B → 2 Cu + MgB<sub>6</sub><br />
: 14 Cu<sub>2</sub>Mg + 4 B<sub>2</sub>O<sub>3</sub> → 28 Cu + MgB<sub>2</sub> + MgB<sub>6</sub> + 12 MgO<br />
<br />
它也能和氢化镁反应，生成[[正交晶系]]的Mg<sub>2</sub>Cu并放出氢气。<ref>{{cite journal|last1=Volkova|first1=L. S.|last2=Kalinnikov|first2=G. V.|last3=Ivanov|first3=A. V.|last4=Shilkin|first4=S. P.|title=Synthesis of Mg<sub>2</sub>Cu and MgCu<sub>2</sub> nanoparticles in a KCl-NaCl-MgCl<sub>2</sub> melt|journal=Inorganic Materials|volume=48|issue=11|year=2012|pages=1078–1081|issn=0020-1685|doi=10.1134/S0020168512110179}}</ref><br />
<br />
==参考文献==<br />
{{reflist}}<br />
<br />
==参见==<br />
* [[拉弗斯相]]<br />
<br />
{{鎂化合物}}<br />
{{无机物晶体结构 (H~O)}}<br />
[[Category:镁化合物]]<br />
[[Category:铜化合物]]<br />
[[Category:金属间化合物]]</div>
imported>Vack Xu