|
| Solubility =
| SolubleOther = tidak larut dalam pelarut organik
| MeltingPt = > 550 °C
| BoilingPt = }}
}}
Litium karbida kadang-kadang dibingungkan dengan obat [[litium karbonat]], {{chem|Li|2|O|3}}, karena kemiripan namanya.
== Preparasi dan kimia ==
==Preparation and chemistry==
Dalam laboratorium, sampel dapat disiapkan dengan memberi perlakuan [[asetilena]] dengan larutan litium dalam amonia.
In the laboratory samples may be prepared by treating [[acetylene]] with a solution of lithium in ammonia.
: {{<chem|C|2|H|2}}>C2H2 + 22Li Li-> → {{chem|Li|2|C|2}}Li2C2 + H<sub>2H2</subchem>
SamplesSampel prepareddisiapkan indengan thiscara mannerini generallyumumnya arememiliki poorlykristal crystallineburuk. CrystallineSampel sampleskristal maydapat bedisiapkan preparedmelalui byreaksi aantara reactionleburan betweenlitium molten lithium anddan [[graphitegrafit]] atpada oversuhu di atas 1000 °C.<ref name=rev1 /> {{chem|Li<sub>|2</sub>|C<sub>|2</sub>}} candapat alsopula bedisiapkan preparedmelalui by reactingreaksi CO<{{sub>|2</sub>}} withdengan moltenlelehan lithiumlitium.
Litium karbida mudah terhidrolisis membentuk [[asetilena]]:
Lithium carbide is hydrolyses readily to form [[acetylene]]:
:<chem>C2Li2 + H2O -> C2H2 + LiOH</chem>
:{{chem|C|2|Li|2}} + {{chem|H|2|O}} → {{chem|C|2|H|2}} + {{chem|LiOH}}
==Structure Struktur ==
{{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>
At high temperatures {{chem|Li|2|C|2|}} transforms reversibly to a cubic anti-fluorite structure.<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>
== Penggunaan dalam penanggalan radiokarbon ==
==Use in radiocarbon dating==
{{main|RadiocarbonPenanggalan datingradiokarbon}}
ThereTerdapat aresejumlah aprosedur numberyang of procedures employedberlaku, somebeberapa thatdilakukan burndengan themembakar samplesampel producingmenghasilkan [[carbonkarbon dioxidedioksida|{{chem|CO<sub>|2</sub>}}]] thatyang iskemudian thendireaksikan reacteddengan with lithiumlitium, anddan othersmetode wherelainnya thedengan carbonmereaksikan containinglangsung samplesampel isyang reactedmengandung directlykarbon withdengan lithiumlogam metallitium.<ref>{{cite journal | author = Swart E.R. | title = The direct conversion of wood charcoal to lithium carbide in the production of acetylene for radiocarbon dating | journal = [[Cellular and Molecular Life Sciences]] | doi = 10.1007/BF02146038 | year = 1964 | volume = 20 | pages = 47}}</ref> TheHasilnya outcome is theadalah samesama: {{chem|Li<sub>|2</sub>|C<sub>|2</sub>}} is produceddihasilkan, whichyang cankemudian thendapat bedigunakan useduntuk tomembuat createspesies specieslain easyseperti toasetilena mass,dan like acetylene and benzenebenzena.<ref>[{{Cite web |url=http://www.geo.unizh.ch/c14/ |title=University of Zurich Radiocarbon Laboratory webpage] |access-date=2017-08-21 |archive-date=2009-08-01 |archive-url=https://web.archive.org/web/20090801100716/http://www.geo.unizh.ch/c14/ |dead-url=yes }}</ref> Perlu Notedicatat thatbahwa [[lithiumlitium nitridenitrida]] maydapat beterbentuk formeddan andini this producesmenghasilkan [[ammoniaamonia]] whenketika hydrolyzeddihidrolisis, whichyang contaminatesakan themengkontaminasi acetylenegas gasasetilena.
==References Referensi ==
{{reflist}}
{{LithiumSenyawa compoundslitium}}
[[Kategori:Asetilida]]
[[Category:Lithium compounds]]
[[Category:Acetylides]]
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