碲化鉀:修订间差异
外观
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| Name = 碲化鉀 |
| Name = 碲化鉀 |
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| CustomizedImage = [[File:CaF2 polyhedra.png|250px|碲化鉀]]<br/><center>K<sup>+</sup>: <span style="color:#99CC00; background-color:#99CC00;">__</span> Te<sup>2-</sup>: <span style="color:#C0C0C0; background-color:#C0C0C0;">__</span></center> |
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| Section1 = {{Chembox Identifiers |
| Section1 = {{Chembox Identifiers |
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| CASNo = |
| CASNo = 12142-40-4 |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| SMILES = [K+].[Te-2].[K+] |
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| Section2 = {{Chembox Properties |
| Section2 = {{Chembox Properties |
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| Formula = K<sub>2</sub>Te |
| Formula = K<sub>2</sub>Te |
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| Appearance = 淡黄色粉末,在空气中迅速变灰<ref>{{cite journal|journal=Inorganica Chimica Acta|volume=176|issue=2|language=en|date=1990-10|pages=271–275|doi=10.1016/S0020-1693(00)84855-0|url=https://linkinghub.elsevier.com/retrieve/pii/S0020169300848550|title=Synthesis and characterization of potassium polytellurides in liquid ammonia solution|accessdate=2019-11-23|author=Linda D. Schultz|archive-date=2020-06-04|archive-url=https://web.archive.org/web/20200604043807/https://linkinghub.elsevier.com/retrieve/pii/S0020169300848550|dead-url=no}}</ref> |
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| Appearance = {{citation needed|白色粉末}} |
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| MolarMass = 298.64 g/mol |
| MolarMass = 298.64 g/mol |
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| Density = |
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| Section8 = {{Chembox Related |
| Section8 = {{Chembox Related |
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| OtherCations = [[碲化鋰]]、[[碲化鈉]]、[[碲化銣]]、[[碲化銫]] |
| OtherCations = [[碲化鋰]]、[[碲化鈉]]、[[碲化銣]]、[[碲化銫]] |
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| OtherAnions = [[氧化鉀]]、[[硫化鉀]]、[[硒化鉀]]、[[ |
| OtherAnions = [[氧化鉀]]、[[硫化鉀]]、[[硒化鉀]]、[[釙化鉀]] |
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'''碲化鉀'''是一種[[無機化合物]],由[[碲]]和[[鉀]]組成,屬於[[碲化 |
'''碲化鉀'''是一種[[無機化合物]],由[[碲]]和[[鉀]]組成,屬於[[碲化物]],其化學式為K<sub>2</sub>Te<ref name="DOI10.1002/anie.197806841">Brigitte Eisenmann, Herbert Schäfer: ''K2Te3 : The First Binary Alkali-Metal Polytelluride with Te<sup>2−</sup><sub>3</sub>-Ions.'' In: ''Angewandte Chemie International Edition in English.'' 17, 1978, S. 684, {{DOI|10.1002/anie.197806841}}.</ref>。外觀為白色粉末,碲化鉀可由鉀和碲發生反應制得,通常進行反應是利用[[液氨]]作為溶劑。碲化鉀和[[碲化銣]]、[[碲化銫]]一樣可用作太空中紫外線探測器,至於它的晶體結構,則類似於[[同族]]的[[碲化物]],為反[[螢石]]結構。 |
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== 制備 == |
== 制備 == |
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[[碲]]和[[熔融]]的[[氰化鉀]](KCN)反應會生成碲化鉀。亦可以透過隔絕空氣的氨環境下使鉀和碲發生反應製備<ref name="Wolfgang A. Herrmann, Christian Erich Zybill">{{Cite book| author=Wolfgang A. Herrmann, Christian Erich Zybill | title=Synthetic Methods of Organometallic and Inorganic Chemistry, Volume 4, 1997 Volume 4: Sulfur, Selenium and Tellurium | publisher=Georg Thieme Verlag | ISBN=3-13-179191-8 | year=2014 | Online={{Google Buch | BuchID=VIuZAwAAQBAJ | page=191 }} | page=191 }}</ref>: |
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[[碲]]和[[熔融]]的[[氰化鉀]](KCN)反應會生成'''碲化鉀'''。 |
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:<math>\mathrm{2 \ K + Te \longrightarrow K_2Te}</math> |
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== 性質 == |
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碲化钾极易被氧化: |
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:<math>\mathrm{2 \ K_2Te + 2 \ H_2O + O_2 \longrightarrow 4 \ KOH + 2 \ Te}</math><ref name="Wolfgang A. Herrmann, Christian Erich Zybill" /><ref name="Adolf Pinner">{{Literatur| Autor=Adolf Pinner | Titel=Repetitorium Der Anorganischen Chemie | Verlag=Рипол Классик | ISBN=978-5-87746-719-4 | Jahr=1885 | Online={{Google Buch | BuchID=P8QOAwAAQBAJ | Seite=116 }} | Seiten=116 }}</ref> |
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它和[[碲化锂]]或[[碲化钠]]在氩气中加热,可以得到KLiTe或KNaTe。<ref>{{cite journal|journal=Zeitschrift für Naturforschung B|volume=44|issue=12|issn=1865-7117|date=1989-12-01|pages=1602–1604|doi=10.1515/znb-1989-1224|url=https://www.degruyter.com/view/journals/znb/44/12/article-p1602.xml|title=Notizen: Erste Interalkalimetalltelluride: NaLiTe, KLiTe, KNaTe / First Inter Alkali Metal Tellurides: NaLiTe, KLiTe, KNaTe|accessdate=2020-07-04|author=Rolf-D. Hitzbleck, Petra Vogt, Horst Sabrowsky}}</ref> |
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== 參考文獻 == |
== 參考文獻 == |
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{{reflist}} |
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* Sangester J. and Pelton AD; ''Journal of Phase Equilibria'', '''1997''', 18(4) p. 394. |
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{{鉀化合物}} |
{{鉀化合物}} |
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[[Category: |
[[Category:钾化合物]] |
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[[Category:碲化 |
[[Category:碲化物]] |
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[[Category:缺少物质图片的化学品条目]] |
2021年9月28日 (二) 10:17的最新版本
碲化鉀 | ||
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识别 | ||
CAS号 | 12142-40-4 | |
SMILES |
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性质 | ||
化学式 | K2Te | |
摩尔质量 | 298.64 g/mol g·mol⁻¹ | |
外观 | 淡黄色粉末,在空气中迅速变灰[1] | |
熔点 | 874 °C | |
相关物质 | ||
其他阴离子 | 氧化鉀、硫化鉀、硒化鉀、釙化鉀 | |
其他阳离子 | 碲化鋰、碲化鈉、碲化銣、碲化銫 | |
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。 |
碲化鉀是一種無機化合物,由碲和鉀組成,屬於碲化物,其化學式為K2Te[2]。外觀為白色粉末,碲化鉀可由鉀和碲發生反應制得,通常進行反應是利用液氨作為溶劑。碲化鉀和碲化銣、碲化銫一樣可用作太空中紫外線探測器,至於它的晶體結構,則類似於同族的碲化物,為反螢石結構。
制備
[编辑]碲和熔融的氰化鉀(KCN)反應會生成碲化鉀。亦可以透過隔絕空氣的氨環境下使鉀和碲發生反應製備[3]:
性質
[编辑]碲化钾极易被氧化:
它和碲化锂或碲化钠在氩气中加热,可以得到KLiTe或KNaTe。[5]
參考文獻
[编辑]- ^ Linda D. Schultz. Synthesis and characterization of potassium polytellurides in liquid ammonia solution. Inorganica Chimica Acta. 1990-10, 176 (2): 271–275 [2019-11-23]. doi:10.1016/S0020-1693(00)84855-0. (原始内容存档于2020-06-04) (英语).
- ^ Brigitte Eisenmann, Herbert Schäfer: K2Te3 : The First Binary Alkali-Metal Polytelluride with Te2−3-Ions. In: Angewandte Chemie International Edition in English. 17, 1978, S. 684, doi:10.1002/anie.197806841.
- ^ 3.0 3.1 Wolfgang A. Herrmann, Christian Erich Zybill. Synthetic Methods of Organometallic and Inorganic Chemistry, Volume 4, 1997 Volume 4: Sulfur, Selenium and Tellurium. Georg Thieme Verlag. 2014: 191. ISBN 3-13-179191-8. 已忽略未知参数
|Online=
(帮助) - ^ Adolf Pinner, [《碲化鉀》在Google Books的內容。 Repetitorium Der Anorganischen Chemie], Рипол Классик. 1885: pp. 116, (德文)
- ^ Rolf-D. Hitzbleck, Petra Vogt, Horst Sabrowsky. Notizen: Erste Interalkalimetalltelluride: NaLiTe, KLiTe, KNaTe / First Inter Alkali Metal Tellurides: NaLiTe, KLiTe, KNaTe. Zeitschrift für Naturforschung B. 1989-12-01, 44 (12): 1602–1604 [2020-07-04]. ISSN 1865-7117. doi:10.1515/znb-1989-1224.