Zinc diphosphide
Appearance
Identifiers | |
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3D model (
JSmol ) |
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ChemSpider | |
EC Number |
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Properties | |
ZnP2 | |
Molar mass | 127.33 g/mol |
Appearance | red crystals |
Density | 3.53 g/cm3 |
Melting point | 1,040 °C (1,900 °F; 1,310 K) |
Structure | |
Tetragonal, tP24
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P41212, No. 92[1] | |
Hazards | |
GHS labelling: | |
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Danger | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Zinc diphosphide (
eV.[2] It is one of the two compounds in the zinc-phosphorus system, the other being zinc phosphide (Zn3P2)
.
Synthesis and reactions
Zinc diphosphide can be prepared by the reaction of zinc with phosphorus.
- 2 Zn + P4 → 2 ZnP2
Structure
ZnP2 has a room-temperature tetragonal form that converts to a monoclinic form at around 990 °C.[3] In both of these forms, there are chains of P atoms, helical in the tetragonal, semi-spiral in the monoclinic.[4]
This compound is part of the Zn-Cd-P-As quaternary system and exhibit partial solid-solution with other binary compounds of the system.[5]
Safety
ZnP2, like Zn3P2, is highly toxic due to the release of phosphine gas when the material reacts with gastric acid.
References
- S2CID 220629594.
- .
- S2CID 140792691.
- ISBN 0-471-93620-0
- S2CID 94409384.