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Tin(IV) bromide

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Title: Tin(IV) bromide  
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Subject: Tin, Silicon tetrabromide, Tin telluride, Tin(II) sulfide, Tin(II) fluoride
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Tin(IV) bromide

Tin(IV) bromide
Names
IUPAC name
tetrabromostannate
Other names
tin tetrabromide, stannic bromide, bromostannic acid
Identifiers
 YesY
ChemSpider  N
EC number 232-184-5
Jmol-3D images Image
PubChem
Properties
SnBr4
Molar mass 438.33 g/mol
Appearance colourless [1]
Density 3.340 g/cm3 (at 35 °C)[1]
Melting point 31 °C (88 °F; 304 K)[1]
Boiling point 205 °C (401 °F; 478 K)[1]
soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
 N  (: YesY/N?)

Tin(IV) bromide is the chemical compound SnBr4. It is a colourless low melting solid.[1] SnBr4 can be prepared by reaction of the elements at normal temperatures:[2]

Sn + 2Br2 → SnBr4

In aqueous solution Sn(H2O)64+ 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+)[3] In basic solution the Sn(OH)62− ion is present.[3]
SnBr4 forms 1:1 and 1:2 complexes with ligands, e.g. with trimethylphosphine the following can be produced, SnBr4.P(CH3)3 and SnBr4.2P(CH3)3.[4]
SnBr4 crystallises in a monoclinic form with molecular SnBr4 units that have distorted tetrahedral geometry.[5]

References

  1. ^ a b c d e
  2. ^ Egon Wiberg, Arnold Frederick Holleman (2001) Inorganic Chemistry, Elsevier ISBN 0-12-352651-5
  3. ^ a b Sn NMR and vibrational spectroscopy, Taylor M. J. ; Coddington J. M., Polyhedron 1992, 11, 12, 1531-1544, doi:10.1016/S0277-5387(00)83148-4
  4. ^ 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, Frieson D. K., Ozin G. A., Can. J. Chem. 51(16): 2697–2709 (1973) doi:10.1139/v73-406
  5. ^ Die Kristallstruktur von SnBr4 , Brand P., Sackmann H., Acta Crystallographica ( 1963), 16, 446-451, doi:10.1107/S0365110X63001250
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