| Identifiers | |
|---|---|
3D model (JSmol) | |
| 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 | |
| P41212, No. 92[1] | |
| Hazards | |
| GHS labelling: | |
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| Danger | |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Zinc diphosphide (ZnP2) is aninorganicchemical compound. It is a redsemiconductor solid with a band gap of 2.1eV.[2] It is one of the two compounds in the zinc-phosphorus system, the other beingzinc phosphide (Zn3P2).
Zinc diphosphide can be prepared by the reaction ofzinc withphosphorus.
ZnP2 has a room-temperaturetetragonal form that converts to amonoclinic 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 theZn-Cd-P-As quaternary system and exhibit partial solid-solution with other binary compounds of the system.[5]
ZnP2, like Zn3P2, is highly toxic due to the release ofphosphine gas when the material reacts withgastric acid.