terbium(IV) fluoride
{{Chembox
| Name =
| ImageFile = Kristallstruktur_Uran(IV)-fluorid.png
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| IUPACName =
| OtherNames = terbium tetrafluoride
| Section1 = {{Chembox Identifiers
| CASNo = 36781-15-4
| CASNo_Ref = {{cascite|correct|CAS}}
| PubChem = 90471797
| ChemSpiderID = 21493830
| StdInChI=1S/4FH.Tb/h4*1H;/q;;;;+4/p-4
| StdInChIKey = XWMJNWMCMQWTCG-UHFFFAOYSA-J
| SMILES = [F-].[F-].[Tb+4].[F-].[F-] }}
| Section2 = {{Chembox Properties
| Formula = TbF4
| MolarMass =
| Appearance = white solid
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| Section3 = {{Chembox Hazards
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Terbium(IV) fluoride is an inorganic compound with a chemical formula TbF4. It is a white solid that is a strong oxidizer. It is also a strong fluorinating agent, emitting relatively pure atomic fluorine when heated, rather than the mixture of fluoride vapors emitted from cobalt(III) fluoride or cerium(IV) fluoride.{{cite journal |last1=Rau |first1=J. V. |last2=Chilingarov |first2=N. S. |last3=Leskiv |first3=M. S. |last4=Sukhoverkhov |first4=V. F. |last5=Rossi Albertini |first5=V. |last6=Sidorov |first6=L. N. |title=Transition and rare earth metal fluorides as thermal sources of atomic and molecular fluorine |journal=Le Journal de Physique IV |date=August 2001 |volume=11 |issue=PR3 |pages=Pr3–109–Pr3-113 |doi=10.1051/jp4:2001314}}
Preparation
Terbium(IV) fluoride can be produced by the reaction between very pure terbium(III) fluoride and xenon difluoride, chlorine trifluoride or fluorine gas:无机化学丛书 第七卷 钪 稀土元素. 科学出版社. pp 244-246. 1. 卤素化合物
: 2 TbF3 + F2 → 2 TbF4
Properties
Terbium(IV) fluoride hydrolyzes quickly in hot water, producing terbium(III) fluoride and terbium oxyfluoride (TbOF). Heating terbium(IV) fluoride will cause it to decompose into terbium(III) fluoride and predominantly monatomic fluorine gas.{{cite journal|title=Thermal decomposition of curium tetrafluoride and terbium tetrafluoride|issn=0022-4596|date=1988-04-01|journal=Journal of Solid State Chemistry|volume=73|issue=2|doi=10.1016/0022-4596(88)90140-5|pages=524–530|url=https://dx.doi.org/10.1016/0022-4596%2888%2990140-5|language=en|access-date=2018-12-09|last1=Gibson |first1=John K. |last2=Haire |first2=Richard G. |bibcode=1988JSSCh..73..524G |url-access=subscription}}{{cite journal |last1=Rau |first1=J. V. |last2=Chilingarov |first2=N. S. |last3=Leskiv |first3=M. S. |last4=Sukhoverkhov |first4=V. F. |last5=Rossi Albertini |first5=V. |last6=Sidorov |first6=L. N. |title=Transition and rare earth metal fluorides as thermal sources of atomic and molecular fluorine |journal=Le Journal de Physique IV |date=August 2001 |volume=11 |issue=PR3 |pages=Pr3–109–Pr3-113 |doi=10.1051/jp4:2001314}}
: TbF4 → TbF3 + F•↑
The reaction will produce the mixed valence compound Tb(TbF5)3, which has the same crystal form as Ln(HfF5)3.Nikulin V V, Goryachenkov S A, Korobov M V, et al. [https://inis.iaea.org/search/search.aspx?orig_q=RN:17053937 On thermal stability of terbium tetrafluoride][J]. Zhurnal Neorganicheskoj Khimii, 1985, 30(10): 2530-2533.
Terbium(IV) fluoride can oxidize cobalt trifluoride into cobalt tetrafluoride:{{cite journal|title=Atomic fluorine in thermal reactions involving solid TbF4|doi=10.1016/S0022-1139(00)00259-1|date=2000-07-01|journal=Journal of Fluorine Chemistry|volume=104|issue=2|pages=291–295|issn=0022-1139|url=https://www.sciencedirect.com/science/article/abs/pii/S0022113900002591|language=en|access-date=2018-12-09|last1=Chilingarov |first1=N.S |last2=Rau |first2=J.V |last3=Sidorov |first3=L.N |last4=Bencze |first4=L. |last5=Popovic |first5=A. |last6=Sukhoverkhov |first6=V.F |url-access=subscription }}
: TbF4 + CoF3 → TbF3 + CoF4↑
It can fluoronate [60]fullerene at 320–460 °C.{{cite journal|url=https://www.tandfonline.com/action/captchaChallenge?redirectUri=%2Fdoi%2Fabs%2F10.1080%2F10641229809350215|issue=3|doi=10.1080/10641229809350215|pages=469–479|title=Reaction of [60]Fullerene with Terbium(IV) Fluoride|volume=6|journal=Fullerene Science and Technology|date=May 1998|issn=1064-122X|language=en|access-date=2018-12-13|author=O. V. Boltalina, A. Yu. Lukonin, V. K. Pavlovich, L. N. Sidorov, R. Taylor, A. K. Abdul-Sada|url-access=subscription}}
When terbium(IV) fluoride reacts with potassium chloride and fluorine, it can produce the mixed valence compound KTb3F12.{{cite journal|date=1998-09-01|title=Synthesis and Crystal Structure of a New Mixed-Valence Terbium Fluoride, KTbIIITbIV2F12, and Related KLnIIIMIV2F12Compounds (MIV=Tb, Zr, Hf;LnIII=Ce–Lu)|url=https://www.sciencedirect.com/science/article/pii/S0022459698978379|journal=Journal of Solid State Chemistry|language=en|volume=139|issue=2|pages=248–258|doi=10.1006/jssc.1998.7837|issn=0022-4596|access-date=2018-12-10| last1=Largeau | first1=Eric | last2=El-Ghozzi | first2=Malika | last3=Avignant | first3=Daniel | bibcode=1998JSSCh.139..248L |url-access=subscription}} A mixture of rubidium fluoride, aluminium fluoride and terbium(IV) fluoride produces Rb2AlTb3F16.{{cite journal|date=2003-08-01|title=Synthesis and crystal structure of Rb2AlTb3F16: a new mixed-valence terbium fluoride|url=https://www.sciencedirect.com/science/article/pii/S1293255803001316|journal=Solid State Sciences|language=en|volume=5|issue=8|pages=1141–1148|doi=10.1016/S1293-2558(03)00131-6|issn=1293-2558|access-date=2018-12-10|last1=Josse |first1=Michaël |last2=Dubois |first2=Marc |last3=El-Ghozzi |first3=Malika |last4=Avignant |first4=Daniel |bibcode=2003SSSci...5.1141J |url-access=subscription}}
References
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attribution: This article was translated from the Chinese article :zh:四氟化铽
{{terbium compounds}}
{{fluorides}}
{{Lanthanide halides}}