塩化チタン(II)

塩化チタン(II)
別名	二塩化チタン
組成式	TiCl₂
式量	118.77 g/mol
形状	黒色結晶^[1]
CAS登録番号	[10049-06-6]
密度と相	3.13^[1] g/cm³, 固体
融点	1035 °C^[1]

塩化チタン(II)（えんかチタン、titanium(II) chloride）とは、組成式が TiCl₂ と表される無機化合物で、チタンの塩化物の一種。二塩化チタンとも呼ばれる。水で容易に分解し、空気中で加熱すると発火する黒色の固体^[1]。

塩化チタン(IV) や塩化チタン(III) よりも一般に高価だが、市販品が入手可能である。4族元素のチタンで最も安定な価数は +4価であるため、+2価の塩化チタン(II) は強い還元力を持つ。さらにルイス酸としての配位性を持つことを利用して、合成反応における反応試剤としての用途がいくつか知られる。

合成

塩化チタン(II) の合成法として代表的なものは、熱による塩化チタン(III) の不均化反応である。副生する塩化チタン(IV) が揮発し、塩化チタン(II) が残る。

{\ce {2TiCl3\ +{\mathit {heat}}}}

(500℃)

{\ce {->TiCl2\ +TiCl4\uparrow }}

塩化チタン(IV) を熱した石英ガラス管中で水素により還元して得る手法も知られる。

結晶構造

塩化チタン(II) の結晶構造はヨウ化カドミウム型である。6個の塩化物イオンが作る正八面体の中心にチタン(II)イオンが位置する^[2]^[3]。

用途

C-C結合生成

アルデヒドまたはケトンに塩化チタン(II) と亜鉛、または塩化チタン(IV) と亜鉛とを作用させるとピナコールカップリングが起こり、メソ体の 1,2-ジオールが選択的に得られる。この反応は向山光昭らによって報告された^[4]。

{\ce {2R-CHO\ + TiCl2\ + Zn -> R-CH(OH)-CH(OH)-R}}

向山らはさらにこの C-C結合生成反応を、タキソール骨格のシクロヘキセン環合成へと展開させた^[5]。

塩化チタン(II) と銅の組み合わせにより、α-ブロモケトンまたはチオエステルをアルデヒドと還元的に縮合させられる。この反応も高い立体選択性を示す^[6]。

{\ce {R-CHO\ + Br-CH(R')-C(=O)-R''\ + TiCl2\ + Cu -> R-CH(OH)-CH(R')-C(=O)-R''}}

還元反応

ニトロ化合物に塩化チタン(II) を加えると、還元が起こり対応するアミンが得られる^[7]^[8]。

{\ce {R-NO2\ + TiCl2 -> R-NH2}}

参考文献

^ ^a ^b ^c ^d Merck Index 13th ed., 9548.
^ Gal'perin, E. L.; Sandler, R. A. Kristallografiya 1962, 7, 217-19.
^ Baenziger, N. C.; Rundle, R. E. Acta Crystallographica 1948, 1, 274ff.
^ Kagayama, A.; Igarashi, K.; Mukaiyama, T. Can. J. Chem. 2000, 78, 657-665.
^ Mukaiyama, T.; Ogawa, Y.; Kuroda, K.; Matsuo, J. Chem. Lett., 2004, 33, 1412-1413.
^ Kagayama, A.; Igarashi, K.; Shiina, I; Mukaiyama, T. Bull. Chem. Soc. Jpn. 2000, 73, 2579-2585.
^ Heer, J. P.; Harling, J. D.; Thompson, M. Synth. Commun. 2002, 32, 2555-63. DOI: 10.1081/SCC-120005939
^ Somei, M.; Tsuchiya, M. Chem. Pharm. Bull. 1981, 29, 3145-57.

表話編歴チタンの化合物
二元化合物	TiB₂ TiBr₃ TiBr₄ TiC TiCl₂ TiCl₃ TiCl₄ TiF₂ TiF₃ TiF₄ TiH₂ TiI₃ TiI₄ TiN TiO TiO₂ Ti₂O₃ TiP TiS TiS₂ Ti₂S₃ TiSi₂
多元化合物	Ti(C₅H₅)₂ Ti(C₅H₅)Cl₃ Ti(C₅H₅)₂Cl₂ Ti(C₅H₅)₂(CO)₂ Ti(NO₃)₄ Ti(OH)₄ Ti(SO₄)₂ Ti₂(SO₄)₃
カテゴリ

Read other articles:

Gurisi

Gurisi Pristipomoides filamentosus Status konservasiRisiko rendahIUCN194331 TaksonomiKerajaanAnimaliaFilumChordataKelasActinopteriOrdoLutjaniformesFamiliLutjanidaeGenusPristipomoidesSpesiesPristipomoides filamentosus Valenciennes, 1830 lbs Gurisi (Pristipomoides filamentosus), Kerisi bali, atau Bero babi adalah sejenis ikan demersal (dasar tanah) yang menghuni perairan tropis di kawasan Indo-Pasifik.[1] Ikan ini masih satu suku dengan kakap dan merupakan ikan pancing yang umum ditangk...

Telenor

Telenor GroupLogo La sede centrale di Telenor a Fornebu Stato Norvegia Forma societariaSocietà per azioni Borse valoriBorsa di Oslo: TEL ISINNO0010063308 Fondazione1855 Sede principaleFornebu Persone chiave Gunn Wærsted (presidente) Sigve Brekke (amministratore delegato) Tone Hegland Bachke (direttore finanziario) SettoreTelecomunicazioni Prodottitelefonia fissa, telefonia cellulare, Internet, televisione via cavo Fatturato94.84 miliardi di NOK (2010) Dipendenti20 044[1] (...

Miss Universe 1994

43rd Miss Universe pageant Miss Universe 1994Sushmita Sen, Miss Universe 1994Date21 May 1994PresentersBob GoenArthel NevilleAngela VisserEntertainmentPeabo BrysonBayanihan Philippine National Folk Dance CompanyEraserheadsVenuePhilippine International Convention Center, Pasay City, Metro Manila, PhilippinesBroadcasterCBS (international)ABS-CBN (DWWX-TV) (official broadcaster)Entrants77Placements10DebutsRussiaSlovakiaZimbabweWithdrawalsAustriaBelizeCzech RepublicGhanaLebanonNicaraguaSurinameUni...

Campionato Nazionale Dilettanti 1994-1995

Questa voce o sezione sull'argomento edizioni di competizioni calcistiche non cita le fonti necessarie o quelle presenti sono insufficienti. Puoi migliorare questa voce aggiungendo citazioni da fonti attendibili secondo le linee guida sull'uso delle fonti. Segui i suggerimenti del progetto di riferimento. C.N.D. 1994-1995Campionato Nazionale Dilettanti 1994-1995 Competizione Campionato Nazionale Dilettanti Sport Calcio Edizione 47ª Organizzatore Lega Nazionale Dilettanti -Comitato per ...

Himachal Pradesh

State in northern India State in North India, IndiaHimachal PradeshStateHPCA StadiumKinnaur KailashParvati Valley near ToshBaijnath TempleKey Monastery at SpitiBhimakali Temple in SarahanKalpaShimla at Night Emblem of Himachal PradeshEtymology: Land of the snow-clad mountainsNickname: Mountain StateMotto(s): Satyameva Jayate (Truth alone triumphs)Location of Himachal Pradesh in IndiaCoordinates: 31°6′12″N 77°10′20″E / 31.10333°N 77.17222°E / 31.10...

Rio Arriba County, New Mexico

County in New Mexico, United States County in New MexicoRio Arriba CountyCountyRio Arriba County Courthouse, Isaac Rapp, architect, 1916-17 SealLocation within the U.S. state of New MexicoNew Mexico's location within the U.S.Coordinates: 36°31′N 106°42′W / 36.51°N 106.7°W / 36.51; -106.7Country United StatesState New MexicoFounded1852Named forlocation on the upper Rio Grande (río arriba means upriver in Spanish)SeatTierra AmarillaLargest cityEspañol...

2024 European Parliament election in Estonia

2019 election of members of the European parliament for Estonia 2024 European Parliament election in Estonia ← 2019 6-9 June 2024 All 7 Estonian seats to the European Parliament4 seats needed for a majority Leader Kaja Kallas Lauri Läänemets Mihhail Kõlvart Party Reform SDE Centre Alliance RE S&D RE Last election 2 seats, 26.2% 2 seats, 23.3% 1 seat, 14.4% Current seats 2 2 1 Seats needed 2 2 3 Leader Martin Helme Urmas Reinsalu Party EKRE Isamaa...

Министерство природных ресурсов и экологии Российской Федерации

Министерство природных ресурсов и экологии Российской Федерациисокращённо: Минприроды России Общая информация Страна Россия Юрисдикция Россия Дата создания 12 мая 2008 Предшественники Министерство природных ресурсов Российской Федерации (1996—1998)Министерство охраны...

Venticano

VenticanoKomuneComune di VenticanoLokasi Venticano di Provinsi AvellinoNegaraItaliaWilayah CampaniaProvinsiAvellino (AV)Luas[1] • Total14,16 km2 (5,47 sq mi)Ketinggian[2]375 m (1,230 ft)Populasi (2016)[3] • Total2.532 • Kepadatan180/km2 (460/sq mi)Zona waktuUTC+1 (CET) • Musim panas (DST)UTC+2 (CEST)Kode pos83030Kode area telepon0825Situs webhttp://www.comune.venticano.av.it Venticano ad...

2007 German Athletics Championships

International athletics championship event2007 German Athletics ChampionshipsDates21–22 July 2007Host cityErfurt, GermanyVenueSteigerwaldstadionRecords set1 Championship Record← 2006 Ulm 2008 Nuremberg → The 2007 German Athletics Championships were held at the Steigerwaldstadion in Erfurt on 21–22 July 2007. Results Men Gold Silver Bronze 100 m (+0.3 m/s) Alexander Kosenkow 10.35 Ronny Ostwald 10.37 Marius Broening 10.41 200 m (−0.7 m/s) Daniel Schnelting 20.88 Alexander Kos...

Bank Grameen

Bank Grameen Bank Grameen adalah sebuah organisasi kredit mikro yang dimulai di Bangladesh yang memberikan pinjaman kecil Dan kepada orang yang kurang mampu tanpa membutuhkan collateral. Sistem ini berdasarkan ide bahwa orang miskin memiliki kemampuan yang kurang digunakan. Yang berbeda dari kredit ini adalah pinjaman diberikan kepada kelompok perempuan produktif yang masih berada dalam status sosial miskin. Pola Grameen bank ini telah diadopsi oleh hampir 130 negara didunia (kebanyakan dineg...

Lycée Nelson Mandela (Nantes)

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) This article relies excessively on references to primary sources. Please improve this article by adding secondary or tertiary sources. Find sources: Lycée Nelson Mandela Nantes – news · newspapers · books · scholar · JSTOR (December 2021) (Learn how and when to remove this message)This article r...

Radio Lombardia

Questa voce o sezione sull'argomento radio non cita le fonti necessarie o quelle presenti sono insufficienti. Puoi migliorare questa voce aggiungendo citazioni da fonti attendibili secondo le linee guida sull'uso delle fonti. Segui i suggerimenti del progetto di riferimento. Radio LombardiaLogo di Radio LombardiaPaese Italia Linguaitaliano Frequenze100.3 FM Data di lancio1975 EditoreR.C.S. srl Frequenze precedentiRadio Celentano MottoNon ci fermiamo mai Sito webwww.radiolombardia.i...

Assedio di Stepanakert

Assedio di Stepanakertparte della prima guerra del Nagorno KarabakhIl carro armato T-72 restaurato di Gagik Avsharyan per commemorare la cattura di Shusha e la fine dell'assedio di StepankertDatanovembre 1991[1] - 9 maggio 1992[2][3] LuogoStepanakert, Azerbaigian (de jure) Nagorno Karabakh (de facto) EsitoVittoria armena Assedio rimosso dalle forze armene dopo la battaglia di Shushi Schieramenti Nagorno Karabakh (Artsakh)[N 1] Armenia[N 2] Aze...

Barrier-to-autointegration factor

Family of proteins This article is about the nuclear organization factor. For the nucleosome repositioning factor, see BAF complex. BAFthe crystal structure of human barrier-to-autointegration factor (baf)IdentifiersSymbolBAFPfamPF02961InterProIPR004122SCOP21qck / SCOPe / SUPFAMAvailable protein structures:Pfam structures / ECOD PDBRCSB PDB; PDBe; PDBjPDBsumstructure summary In molecular biology, barrier-to-autointegration factor (BAF) is a family of essential proteins that is hig...

尼科西亚

关于北塞浦路斯首都，请见「北尼科西亚」。尼科西亚Λευκωσία（希腊文）Lefkoşa（土耳其文）首都尼科西亚尼科西亞在塞浦路斯的位置坐标：35°10′21″N 33°21′54″E / 35.1725°N 33.365°E / 35.1725; 33.365國家賽普勒斯北賽普勒斯區尼科西亞區政府 • 市長Constantinos Yiorkadjis人口 • 首都賽普勒斯 47,832人 • 市区 ...

Dulwich and West Norwood (UK Parliament constituency)

Parliamentary constituency in the United Kingdom, 1997 onwards Dulwich and West NorwoodBorough constituencyfor the House of CommonsInteractive map of boundaries from 2024Location within Greater LondonCountyGreater LondonElectorate74,314 (2023)[1]Major settlementsHerne Hill, Dulwich, Brixton, Gipsy Hill, West NorwoodCurrent constituencyCreated1997Member of ParliamentTBC (TBC)SeatsOneCreated fromDulwich and Norwood Dulwich and West Norwood /ˈdʌlɪtʃ ... ˈnɔːwʊd/ is a ...

Marsh Baldon

Human settlement in EnglandMarsh BaldonSt. Peter's parish churchMarsh BaldonLocation within OxfordshireArea5.17 km2 (2.00 sq mi)Population310 (2011 Census)• Density60/km2 (160/sq mi)OS grid referenceSU5699Civil parishMarsh BaldonDistrictSouth OxfordshireShire countyOxfordshireRegionSouth EastCountryEnglandSovereign stateUnited KingdomPost townOxfordPostcode districtOX44Dialling code01865PoliceThames ValleyFireOxfordshireAmbulanceS...

Châtillon (Hauts-de-Seine)

Pour les articles homonymes, voir Châtillon. Châtillon L'église Saint-Philippe-et-Saint-Jacques en septembre 2011. Blason Administration Pays France Région Île-de-France Département Hauts-de-Seine Arrondissement Antony Intercommunalité Métropole du Grand ParisEPT Vallée Sud Grand Paris. Maire Mandat Nadège Azzaz (PS) 2020-2026 Code postal 92320 Code commune 92020 Démographie Gentilé Châtillonnais Populationmunicipale 36 777 hab. (2021 ) Densité 12 595 hab./k...

Disappearance of Sherlyn Cadapan and Karen Empeño

Sherlyn Cadapan and Karen EmpeñoCadapan (left) and EmpeñoBornCadapan: 1976 or 1977Empeño: 1983 or 1984Metro Manila, Philippines (both)DisappearedJune 26, 2006Hagonoy, Bulacan, PhilippinesStatusMissing for 18 years, 2 months and 28 daysEducationUniversity of the Philippines Diliman Sherlyn Cadapan (1976 or 1977 – disappeared June 26, 2006)[1] and Karen Empeño (1983 or 1984 – disappeared June 26, 2006)[1] were students who b...

PROFILPELAJAR.COM