“Rubidium fluoride”的意思、由来-开放百科全书

词条

Rubidium fluoride

释义

References

{{chembox
| Watchedfields = changed
| verifiedrevid = 464384216
| OtherNames = Rubidium(I) Fluoride
|Section1={{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 75311
| InChI = 1/FH.Rb/h1H;/q;+1/p-1
| InChIKey = AHLATJUETSFVIM-REWHXWOFAO
| SMILES = [Rb+].[F-]
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/FH.Rb/h1H;/q;+1/p-1
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = AHLATJUETSFVIM-UHFFFAOYSA-M
| CASNo = 13446-74-7
| CASNo_Ref = {{cascite|correct|CAS}}
| PubChem = 83473
| RTECS = VL8740000
|Section2={{Chembox Properties
| Formula = RbF
| MolarMass = 104.4662 g/mol
| Appearance = white crystalline solid
| Density = 3.557 g/cm³
| MeltingPtC = 795
| MeltingPt_notes =
| BoilingPtC = 1408
| BoilingPt_notes =
| Solubility = 130.6 g/100 mL (18 °C)
| MagSus = −31.9·10⁻⁶ cm³/mol
|Section7={{Chembox Hazards
| NFPA-H = 3
| NFPA-F = 0
| NFPA-R = 0
| ExternalSDS =
| MainHazards = Toxic
| RPhrases =
| SPhrases =
| FlashPt = Non-flammable
|Section8={{Chembox Related
| OtherAnions = Rubidium chloride
Rubidium bromide
Rubidium iodide
Rubidium astatide
| OtherCations = Lithium fluoride
Sodium fluoride
Potassium fluoride
Caesium fluoride
Francium fluoride
}}

Rubidium fluoride (RbF) is the fluoride salt of rubidium. It is a cubic crystal with rock-salt structure.

There are several methods for synthesising rubidium fluoride. One involves reacting rubidium hydroxide with hydrofluoric acid:

RbOH + HF → RbF + H₂O

Another method is to neutralize rubidium carbonate with hydrofluoric acid:

Rb₂CO₃ + 2HF → 2RbF + H₂O + CO₂

Another possible method is to react rubidium hydroxide with ammonium fluoride:

RbOH + NH₄F → RbF + H₂O + NH₃

The least used method due to expense of rubidium metal is to react it directly with fluorine gas, as rubidium reacts violently with halogens:

2Rb + F₂ → 2RbF

References

{{cite web |url= http://www.webelements.com/compounds/rubidium/rubidium_fluoride.html|title= Rubidium compounds: rubidium fluoride|work= WebElements: the periodic table on the web|publisher= WebElements|accessdate= 16 November 2011}}

{{Rubidium compounds}}{{fluorine compounds}}{{Authority control}}{{DEFAULTSORT:Rubidium Fluoride}}{{inorganic-compound-stub}}

3 : Rubidium compounds|Fluorides|Alkali metal fluorides

随便看

开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。