Tin(IV) bromide is the chemical compound SnBr4. It is a colourless low melting solid.[1]
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IUPAC name
tetrabromostannate
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Other names
tin tetrabromide, stannic bromide, bromostannic acid
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Identifiers | |
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ECHA InfoCard | 100.029.258 |
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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 | |
−149.0·10−6 cm3/mol | |
Related compounds | |
Other anions
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Tin(IV) fluoride Tin(IV) chloride Tin(IV) iodide |
Other cations
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Carbon tetrabromide Silicon tetrabromide Germanium tetrabromide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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SnBr4 occurs in form of crystals. The compound crystallises in a monoclinic crystal system with molecular SnBr4 units that have distorted tetrahedral geometry,[2] with mean Sn-Br bond lengths of 242.3 pm.[3]
SnBr4 can be prepared by reaction of the elements at standard temperature and pressure (STP):[4][page needed]
In aqueous solution Sn(H2O)64+[contradictory] 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.[5]
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.[6]