Litium karbida: Perbedaan antara revisi

==StructureStruktur==

{{chem|Li|2|C|2}} isadalah asenyawa {{ill|fase [[Zintl|en|Zintl phase]] compound and}} existsdan asberada asebagai [[saltgaram (chemistrykimia)|saltgaram]], {{chem|2Li|+|C|2||2−}}. Its reactivityReaktivitasnya, combinedditambah withsulitnya the difficulty in growing suitablemenumbuhkan [[singlekristal crystaltunggal]]s, hasyang made thesesuai, determinationmengakibatkan ofkesulitan itsdalam crystalmenentukan structurestruktur difficultkristalnya. ItIa adoptsmengadopsi astruktur distortedkristal ''anti''-fluoritefluorit crystal structureterdistorsi, similarmirip to that ofdengan rubidium peroxideperoksida ({{chem|Rb|2|O|2}}) anddan caesiumsesium peroxideperoksida ({{chem|Cs|2|O|2}}). Each LiMasing-masing atom isLi surroundeddikelilingi byoleh sixenam carbonatom atomskarbon fromdari 4 differentasetilida acetylides,yang berbeda.<!--with two acetylides co-ordinating side -on and the other two end-on.--><ref name=rev1 /><ref>{{cite journal|last1=Juza|first1=Robert|last2=Opp|first2=Karl|title=Metallamide und Metallnitride, 24. Mitteilung. Die Kristallstruktur des Lithiumamides|journal=Zeitschrift für anorganische und allgemeine Chemie|date=November 1951|volume=266|issue=6|pages=313–324|doi=10.1002/zaac.19512660606|language=German}}</ref> The observedJarak C-C distanceteramati ofadalah 120 pm, indicatesmenandakan theadanya presenceikatan ofrangkap atiga C≡C. triplePada bondsuhu tinggi, {{chem|Li|2|C|2}} bertransformasi reversibel menjadi struktur kubik anti-fluorit.<ref>{{cite journal |author1=U. Ruschewitz |author2=R. Pöttgen | title = Structural Phase Transition in {{chem|Li|2|C|2}} | journal = [[Zeitschrift für anorganische und allgemeine Chemie]] | volume = 625 | issue = 10 | pages = 1599–1603 | doi = 10.1002/(SICI)1521-3749(199910)625:10<1599::AID-ZAAC1599>3.0.CO;2-J | year = 1999}}</ref>