Beryllium chloride
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| Beryllium chloride | |
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| IUPAC name | Beryllium chloride |
| Identifiers | |
| CAS number | [7787-47-5] |
| Properties | |
| Molecular formula | BeCl2 |
| Molar mass | 79.9182 g/mol |
| Appearance | White crystals |
| Density | 1.9 g/cm3, solid (25°C) |
| Melting point |
415 °C |
| Boiling point |
520°C |
| Solubility in water | 15.1 g/100 mL (20°C) |
| Structure | |
| Molecular shape | Linear |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Beryllium chloride is the chemical compound with the formula BeCl2. The solid is a 1-dimensional polymer consisting of edge-shared tetrahedra.[1] In contrast BeF2 is a 3-dimensional polymer, with a structure akin to quartz. In the gas phase it is present both as a linear monomer and a bridged dimer with two bridging chlorine atoms where the beryllium atom is 3-coordinate.[2] The linear shape of the monomeric form is as predicted by VSEPR theory, this contrasts with the monomeric forms of some of the dihalides of the heavier members of group 2, e.g. CaF2, SrF2, BaF2, SrCl2, BaCl2, BaBr2, and BaI2 which are all non-linear.[2]
BeCl2 can be prepared by treating Be metal with hydrogen chloride:
- Be + 2 HCl → BeCl2 + H2
It hydrolyses upon contact with water to give the aquo complex, [Be(H2O)4]Cl2.[3]
[edit] References
- ^ Wells, A.F. (1984) Structural Inorganic Chemistry, Oxford: Clarendon Press. ISBN 0-19-855370-6.
- ^ a b Greenwood, N. N.; Earnshaw, A. (1997). Chemistry of the Elements, 2nd Edition, Oxford:Butterworth-Heinemann. ISBN 0-7506-3365-4.
- ^ Holleman, A. F.; Wiberg, E. (2001) Inorganic Chemistry Academic Press: San Diego, ISBN 0-12-352651-5.
[edit] External Links
- Beryllium chloride at IPCS INTOX databank
- Properties of BeCl2 from NIST
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