beryllium iodide

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| verifiedrevid = 470456807

| ImageFile = Beryllium iodide.svg

| ImageFile1 = EntryWithCollCode92585.png

| ImageSize1 = 250px

| ImageFile2 = EntryWithCollCode92587.png

| ImageSize2 = 250px

| IUPACName =

| SystematicName = Beryllium iodide

| OtherNames =

| Section1 = {{Chembox Identifiers

| Abbreviations =

| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}

| ChemSpiderID = 74209

| InChIKey = JUCWKFHIHJQTFR-NUQVWONBAT

| StdInChI_Ref = {{stdinchicite|correct|chemspider}}

| StdInChI = 1S/Be.2HI/h;2*1H/q+2;;/p-2

| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}

| StdInChIKey = JUCWKFHIHJQTFR-UHFFFAOYSA-L

| CASNo_Ref = {{cascite|correct|CAS}}

| CASNo = 7787-53-3

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = 9E9VD36EWN

| EINECS =

| PubChem = 82231

| SMILES = I[Be]I

| SMILES2 = I[Be-2](I)([I+]1)[I+][Be-2]1([I+]1)[I+][Be-2]1([I+]1)[I+][Be-2]1([I+]1)[I+][Be-2]1([I+]1)[I+][Be-2]1([I+]1)[I+][Be-2]1([I+]1)[I+][Be-2]1([I+]1)[I+][Be-2]1([I+]1)[I+][Be-2]1([I+]1)[I+][Be-2]1([I+]1)[I+][Be-2]1([I+]1)[I+][Be-2]1(I)I

| InChI = 1/Be.2HI/h;2*1H/q+2;;/p-2

| RTECS =

| MeSHName =

| ChEBI_Ref = {{ebicite|correct|EBI}}

| ChEBI =

| KEGG_Ref = {{keggcite|correct|kegg}}

| KEGG =

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| Section2 = {{Chembox Properties

| Be=1|I=2

| Appearance = colorless needle-like crystals

| Density = 4.325 g/cm³

| MeltingPtC = 480

| MeltingPt_notes =

| BoilingPtC = 590

| BoilingPt_ref = {{Citation| last1 = Perry| first1 =Dale L. | author-link =| last2 =Phillips| first2 =Sidney L. | author2-link =| year =1995| title =Handbook of Inorganic Compounds| edition =| volume =| series =| location =| place =| publisher =CRC Press| pages =63| isbn =0-8493-8671-3| doi =| oclc =| url= https://books.google.com/books?id=0fT4wfhF1AsC&q=%22beryllium+iodide%22+properties| access-date = 2007-12-10}}

| Solubility = reacts with water{{Citation needed|date=October 2012}}

| SolubleOther = Slightly soluble in carbon disulfide
Soluble in ethanol, diethyl ether{{Citation| last = Parsons| first =Charles Lathrop| author-link =| year =1909| title =The Chemistry and Literature of Beryllium| edition =| volume =| series =| place =Easton, Pa.| publisher =Chemical Publishing| pages =22–23| isbn =| doi =| oclc =| url=https://books.google.com/books?id=7MxAAAAAIAAJ&q=%22beryllium+iodide%22&pg=PA21| access-date = 2007-12-10}}

| Solvent =

| LogP =

| VaporPressure =

| HenryConstant =

| AtmosphericOHRateConstant =

| pKa =

| pKb = }}

| Section3 = {{Chembox Structure

| CrystalStruct = orthorhombic

| Coordination =

| MolShape = }}

| Section4 = {{Chembox Thermochemistry

| DeltaHf = −192.62 kJ/mol

| DeltaHc = 19 kJ/mol

| DeltaGf = −210 kJ/mol

| Entropy = 130 J/(mol·K)

| HeatCapacity = 71.14 J/(mol·K)

}}

| Section5 = {{Chembox Pharmacology

| AdminRoutes =

| Bioavail =

| Metabolism =

| HalfLife =

| ProteinBound =

| Excretion =

| Legal_status =

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| Section6 = {{Chembox Explosive

| ShockSens =

| FrictionSens =

| DetonationV =

| REFactor = }}

| Section7 = {{Chembox Hazards

| MainHazards = see Berylliosis

| NFPA-H = 3

| NFPA-F = 3

| NFPA-R = 2

| NFPA-S = W

| FlashPt =

| AutoignitionPt =

| ExploLimits =

| LD50 =

| REL = Ca C 0.0005 mg/m³ (as Be){{PGCH|0054}}

| PEL = TWA 0.002 mg/m³
C 0.005 mg/m³ (30 minutes), with a maximum peak of 0.025 mg/m³ (as Be)

| IDLH = Ca [4 mg/m³ (as Be)]}}

| Section8 = {{Chembox Related

| OtherAnions = {{ubl|Beryllium fluoride|Beryllium chloride|Beryllium bromide}}

| OtherCations = {{ubl|Magnesium iodide|Calcium iodide|Strontium iodide|Barium iodide|Radium iodide}}

| OtherFunction =

| OtherFunction_label =

| OtherCompounds = {{ubl|Hydrogen iodide|Zinc iodide}} }}

}}

Beryllium iodide is an inorganic compound with the chemical formula {{chem2|BeI2|auto=1}}. It is a hygroscopic white solid. The {{chem2|Be(2+)}} cation, which is relevant to salt-like BeI₂, is characterized by the highest known charge density (Z/r = 6.45), making it one of the hardest cations and a very strong Lewis acid.{{Citation |last=Buchner |first=M. R. |title=Beryllium Chemistry |date=2017-01-01 |url=https://www.sciencedirect.com/science/article/pii/B9780124095472110248 |work=Reference Module in Chemistry, Molecular Sciences and Chemical Engineering |access-date=2022-10-27 |publisher=Elsevier |language=en |isbn=978-0-12-409547-2}}