ISSN:
0044-2313
Schlagwort(e):
Chemistry
;
Inorganic Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Beschreibung / Inhaltsverzeichnis:
Synthesis and Structure of Na2PtH4, a Ternary Hydride with Square Planar PtH42- GroupsThe red violet hydride Na2PtH4 is synthesized by the reaction of sodium hydride with platinum in a hydrogen atmosphere at a temperature between 280°C and 310°C. The crystal structure was determined by X-ray and neutron diffraction experiments (Na2PtD4) on powdered samples. Na2PtH4 crystallizes in a new structure type (a = 5.274(2), c = 6.788(3) Å; space group I4/mmm; Z = 2), which is characterized by planar, diamagnetic PtH42- anions. Structural relations and relative stabilities of the Na2PtH4 and the K2PtCl4 structure type are to be discussed.
Notizen:
Aus NaH und metallischem Pt entsteht unter H2 (280-310°C) rotviolettes Na2PtH4. Röntgen- und Neutronenbeugung (Na2PtD4) an Pulverproben zeigen, daß Na2PtH4 in einem bisher unbekannten tetragonalen Strukturtyp (a = 5,274(2), c = 6,788(3) Å; Raumgruppe I4/mmm; Z = 2) kristallisiert. Charakteristisch sind planare, diamagnetische [PtH4]2--Anionen. Verwandtschaftsbeziehungen und relative Stabilitäten des Na2PtH4-und des K2PtCl4-Strukturtyps werden diskutiert.
Zusätzliches Material:
3 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/zaac.19845160906
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