über Verbindungen des Thoriums mit Stickstoff und Wasserstoff

Blunck, H.; Jůza, Robert

doi:10.1002/zaac.19744100103

Cited by 13 publications

(3 citation statements)

References 8 publications

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“…Ternary amides decompose to imides and further to nitrides, under release of ammonia. Before the formation of pure nitrides is completed, metal hydrides and mixed hydride nitrides may be obtained as shown in the systems Th/H/N [33], Zr/H/N [75] and Ce/H/N [76], especially at temperatures below the formation temperature for pure nitrides.…”

Section: Ammonobasic Systemsmentioning

confidence: 99%

“…From in-situ powder X-ray diffraction it is known that during decomposition compounds containing N 3-, NH -2 and NH 2-ions may occur. Examples are Li 2 NH, CaNH, MgNH [73,114] and Th 2 N 2 (NH) [33]. There are binary imides of lithium, beryllium, magnesium, calcium, strontium and barium known [73,114].…”

Section: Imides Nitride Imides Nitride Amides and Amide Azidesmentioning

confidence: 99%

“…The first compounds obtained from ammonothermal conditions (up to 507 MPa and 823 K) were binary amides (Be(NH 2 ) 2 , Mg(NH 2 ) 2 [2]) and binary nitrides (Be 3 N 2 [1]), later also imides (Th(NH) 2 [33]), ternary compounds and other than nitrogen containing materials were synthesized [3].…”

mentioning

confidence: 99%

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Chemistry of Ammonothermal Synthesis

2014

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Ammonothermal synthesis is a method for synthesis and crystal growth suitable for a large range of chemically different materials, such as nitrides (e.g., GaN, AlN), amides (e.g., LiNH 2 , Zn(NH 2 ) 2 ), imides (e.g., Th(NH) 2 ), ammoniates (e.g., Ga(NH 3 ) 3 F 3 , [Al(NH 3 ) 6 ]I 3 · NH 3 ) and non-nitrogen compounds like hydroxides, hydrogen sulfides and polychalcogenides (e.g., NaOH, LiHS, CaS, Cs 2 Te 5 ). In particular, large scale production of high quality crystals is possible, due to comparatively simple scalability of the experimental set-up. The ammonothermal method is defined as employing a heterogeneous reaction in ammonia as one homogenous fluid close to or in supercritical state. Three types of milieus may be applied during ammonothermal synthesis: ammonobasic, ammononeutral or ammonoacidic, evoked by the used starting materials and mineralizers, strongly influencing the obtained products. There is little known about the dissolution and materials transport processes or the deposition mechanisms during ammonothermal crystal growth. However, the initial results indicate the possible nature of different intermediate species present in the respective milieus. A Alkali or alkaline-earth metal, A(1) = alkali metal, A(2) = alkaline-earth metal B Further metal, might be main group metal, transition or rare-earth metal M Transition metal, excluding Sc, Y, La R Rare-earth metal, Sc, Y, La-Lu X Halide E Other main group element

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Section: Ammonobasic Systemsmentioning

confidence: 99%

Section: Imides Nitride Imides Nitride Amides and Amide Azidesmentioning

confidence: 99%

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Chemistry of Ammonothermal Synthesis

2014

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Nitrides of Non‐Main Group Elements

Höhn

Niewa

2017

Handbook of Solid State Chemistry

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In the last two decades, there has been a renewed interest in the chemistry of nitrides and nitridometalates. Both binary and higher nitridesMxNyhave already featured prominently as refractory materials, corrosion‐ and mechanical wear‐resistant coatings, hard materials, and hard magnets; thin films are used as diffusion barriers in integrated circuits.Whereas research on binary transition metal nitrides is mostly driven by technical and economic interests, the investigation on nitridometalates primarily focuses on exploration with respect to the development of new synthetic strategies and the design of new materials. Within this field of interest, especially the nitride chemistry of rare earth metals is still comparably undeveloped.Chemical bonding in binary nitrides varies from primarily salt‐like via covalent to metallic, whereas nitridometalates are best described as containing covalent complex anions [MxNy]z−with alkali, alkaline earth, or rare earth metal cations providing electroneutrality.

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