Ammonothermal Synthesis and Characterization of Li4[Zn(NH2)4](NH2)21. Issue 6 (24th March 2015)

• Record Type: Journal Article
• Authors: Richter, Theresia M. M.; Alt, Nicolas S. A.; Schlücker, Eberhard; Niewa, Rainer
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 641:Issue 6(2015)
• Page Start: 1016
• Page End: 1023
• Publication Date: 2015-03-24
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201500067
• Languages: English
• ISSNs: 0044-2313

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Single crystals of Li₄[Zn(NH₂)₄](NH₂)₂ were obtained from Li and Zn under ammonothermal conditions (723 K and 1.58 kbar). Li₄[Zn(NH₂)₄](NH₂)₂ (<italic>C</italic>222₁, <italic>a</italic> = 5.0005(3) Å, <italic>b</italic> = 15.5410(8) Å, <italic>c</italic> = 10.0712(5) Å, <italic>Z</italic> = 4) represents a new possible intermediate in a conceivable ammonothermal synthesis of the semiconductor Zn₃N₂. Single crystal X‐ray diffraction results, thermal analysis, Raman and IR spectra of tetralithium tetraamido zincate diamide are provided and discussed. Crystal structure data justify a description as CaF₂ superstructure variant. Large distances in the crystal structure as well as the intensity and half‐width of the bands in Raman and IR spectra indicate the absence of significant hydrogen bonds. Upon heating Li₄[Zn(NH₂)₄](NH₂)₂ decomposes via intermediate formation of LiZnN, LiNH₂ and Li₂(NH) to finally provide pure Zn.</p> </abstract>