Cesium platinum

Crystal structure
__ Cs +      __ Pt 2−
General
Surname	Cesium platinum
Ratio formula	Cs 2 pt
Brief description	transparent, dark red crystals
External identifiers / databases
CAS number 637042-52-5 Wikidata Q15730234
properties
Molar mass	460.91 g mol −1
Physical state	firmly
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Cesium platinum , Cs ₂ Pt is a chemical compound of cesium with the unusual Pt ²⁻ ion.

Extraction and presentation

Cesium platinum is synthesized by reacting both elements at 700 ° C.

${\displaystyle {\ce {2 Cs + Pt -> Cs2Pt}}}$

properties

The salt is counted among the pseudochalcogenes . The crystal structure of cesium platinum is analogous to the Ni ₂ In structure. Each platinum atom is surrounded by nine cesium atoms. The only valence electron from the cesium is completely transferred to the platinum. The crystals are translucent, with the red color indicating a band gap of 1.5  eV .

Individual evidence

1. ↑ ^{a b} Maria Barysz, Yasuyuki Ishikawa: Relativistic Methods for Chemists . Springer Science & Business Media, 2010, ISBN 1-4020-9975-4 , pp. 67 .
2. ^ ^{A b c} Martin Jansen: Effects of relativistic motion of electrons on the chemistry of gold and platinum . In: Solid State Sciences . tape 7 , December 2005, pp. 1464–1474 , doi : 10.1016 / j.solidstatesciences.2005.06.015 .
3. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.