Tin(IV) bromide: Difference between revisions

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid = 426876864

| ImageFile1 = SnBr4a1.svg

| ImageSize1 = 150px

| ImageFile2 = SnBr4-xtal-packing-3D-bs-17.png

| IUPACName = tetrabromostannate

|Section1={{Chembox Identifiers

| CASNo_Ref = {{cascite|correct|??}}

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

| UNII = 23C21BW281

| PubChem = 24616

| SMILES = Br[Sn](Br)(Br)Br

| EINECS = 232-184-5

| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}}

| ChemSpiderID = 23018

| InChI = 1/4BrH.Sn/h4*1H;/q;;;;+4/p-4

| InChIKey = LTSUHJWLSNQKIP-XBHQNQODAB

| StdInChI_Ref = {{stdinchicite|changed|chemspider}}

| StdInChI = 1S/4BrH.Sn/h4*1H;/q;;;;+4/p-4

| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}}

| StdInChIKey = LTSUHJWLSNQKIP-UHFFFAOYSA-J

}}

|Section2={{Chembox Properties

| MolarMass = 438.33 g/mol

| MeltingPtC = 31

| MeltingPt_ref = <ref name = "Greenwood"/>

| BoilingPtC = 205

| BoilingPt_ref = <ref name = "Greenwood"/>

| Solubility = soluble

| MagSus = &minus;149.0·10⁻⁶ cm³/mol}}

|Section3={{Chembox Hazards

| AutoignitionPt =

}}

| Section9 = {{Chembox Related

| OtherAnions = [[Tin(IV) fluoride]] <br> [[Tin(IV) chloride]] <br> [[Tin(IV) iodide]]

| OtherCations = [[Carbon tetrabromide]] <br> [[Silicon tetrabromide]] <br> [[Germanium tetrabromide]]

| OtherFunction =

| OtherFunction_label =

| OtherCompounds =

}}

'''Tin(IV) bromide''' is the [[chemical compound]] SnBr₄. It is a [[Transparency and translucency|colourless]] [[Low melting point metal|low melting solid]].<ref name = "Greenwood"/>

==Structure==

SnBr₄ occurs in form of [[crystal]]s. The compound crystallises in a [[monoclinic crystal system]] with molecular SnBr₄ units that have distorted tetrahedral geometry,<ref>{{cite journal | title = Die Kristallstruktur von SnBr₄ | language = de | trans-title = The crystal structure of SnBr4 | url = https://scripts.iucr.org/cgi-bin/paper?S0365110X63001250 | first1 = P. | last1 = Brand | first2 = H. | last2 = Sackmann | journal = [[Acta Crystallographica]] | year = 1963 | volume = 16 | issue = 6 | pages = 446–451 | doi = 10.1107/S0365110X63001250 | bibcode = 1963AcCry..16..446B }}</ref> with mean Sn-Br bond lengths of 242.3 pm.<ref>{{ cite journal | title = Zinnhalogenverbindungen. II. Die Molekül- und Kristallstrukturen von Zinn(IV)-bromid und -iodid | first1 = H. | last1 = Reuter | first2 = R. | last2 = Pawlak | language = de | trans-title = Tin halogen compounds. II. The Molecular and Crystal Structures of Tin(IV) Bromide and Tin(IV) Iodide | url = https://www.degruyter.com/document/doi/10.1524/zkri.216.1.34.18992/html | journal = Zeitschrift für Kristallographie – Crystalline Materials [Journal of Crystallography - Crystalline Materials] | year = 2001 | volume = 216 | issue = 1–2001 | pages = 34–38 | doi = 10.1524/zkri.216.1.34.18992 | bibcode = 2001ZK....216...34R | s2cid = 94609783 }}</ref>

==Preparation==

SnBr₄ can be prepared by reaction of the elements at [[standard temperature and pressure]] (STP):<ref name="Holleman-Wiberg2001">{{cite book |first1=Egon |last1=Wiberg |first2=Nils |last2=Wiberg |first3=Arnold Frederick |last3=Holleman |url=https://books.google.com/books?id=Mtth5g59dEIC |date=2001 |title=Inorganic Chemistry |publisher=Academic Press, Elsevier |isbn=978-0-12-352651-9 |oclc=1024925228}}</ref>{{pn|date=April 2023}}

:{{chem|Sn}} + 2{{chem|Br|2}} → {{chem|Sn|Br|4}}

==Dissolution in solvents==

In [[aqueous solution]] Sn(H₂O)₆⁴⁺{{Contradictory inline|1=Metal_ions_in_aqueous_solution#Group_13-18_elements}} is the principal ionic species amongst a range of 6 coordinate ions with from 0-6 bromide ligands (e.g. Sn(H₂O)₆⁴⁺, SnBr(H₂O)₅³⁺).

In basic solution the Sn(OH)₆²⁻ ion is present.<ref>{{cite journal |last1= Taylor |first1=M. J. |last2=Coddington |first2=J. M.| title = The constitution of aqueous tin(IV) chloride and bromide solutions and solvent extracts studied by ¹¹⁹Sn NMR and vibrational spectroscopy| journal = Polyhedron| volume = 11| issue = 12| pages = 1531–1544| date = 1992| doi = 10.1016/S0277-5387(00)83148-4|url=https://www.sciencedirect.com/science/article/abs/pii/S0277538700831484}}</ref>

==Reactions==

SnBr₄ forms 1:1 and 1:2 complexes with [[ligand]]s, e.g. with [[trimethylphosphine]] the following can be produced, SnBr₄.P(CH₃)₃ and SnBr₄.2P(CH₃)₃.<ref>{{cite journal| last1= Frieson |first1=D. K. |last2=Ozin |first2=G. A.| title = Preparation, Infrared and Raman Spectra, and Stereochemistries of Pentacoordinate Trimethylphosphine Complexes, MX₄•P(CH₃)₃ and MX₄•P(CD₃)₃ where M = Ge or Sn and X = Cl or Br| journal = Canadian Journal of Chemistry| volume = 51| issue = 16| pages = 2697–2709| date = 1973| url = https://cdnsciencepub.com/doi/10.1139/v73-406| doi = 10.1139/v73-406 }} </ref>

{{bromine compounds}}

[[Category:Bromides]]

[[Category:Metal halides]]

[[Category:Tin(IV) compounds]]