ChemInform Abstract: HIGH‐PRESSURE AMMONOLYSIS IN SOLID‐STATE CHEMISTRY

Jacobs, H.; Schmidt, Dirk Oliver

doi:10.1002/chin.198310367

Cited by 14 publications

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“…For this purpose he used sealed glass tubes with integrated mercury manometer. Later, in 1848, he succeeded in the growth of BaCO 3 and SrCO 3 millimeter-long crystals from an aqueous solution at 473 K and 1.52 MPa using NH 4 Cl as mineralizer [30]. Similar experiments for recrystallization of apophyllites were apparently conducted by Wöhler earlier [30].…”

mentioning

confidence: 86%

“…3 GaN, AlN, Cu 3 N, Cs 2 S 2 , NaOH [10,11,20- The choice of the solvent considerably influences the obtained product. Even different modifications occur depending on the solvent.…”

mentioning

confidence: 99%

“…The ammonothermal method was established inter alia in order to synthesize high quality crystals of amides for XRD structure determination and of deuteroamides for neutron diffraction [3]. 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].…”

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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%

“…Metal organic vapor phase epitaxy allows the growth of thin epitaxial layers used for devices. Metalorganic precursors (e.g., triethyl or trimethyl-gallium) react with NH 3 forming GaN on a substrate. Growth rates vary from 1-2 µm/h for thin layers and up to 50 µm/h for bulk growth [36].…”

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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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confidence: 86%

“…3 GaN, AlN, Cu 3 N, Cs 2 S 2 , NaOH [10,11,20- The choice of the solvent considerably influences the obtained product. Even different modifications occur depending on the solvent.…”

mentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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Chemistry of Ammonothermal Synthesis

2014

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Sodium Amide

Lange¹,

Triebel²

2000

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Introduction 2. Properties 2.1. Physical Properties of a Solution of Sodium in Liquid Ammonia 2.2. Physical Properties of Sodium Amide 2.3. Chemical Properties 2.3.1. Chemical Properties of Na ‐ NH 3 Solution 2.3.2. Chemical Properties of Sodium Amide 3. Production 4. Safety Aspects 5. Uses 6. Transport Regulations

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Strukturchemische Verwandtschaft von Kaliumhexahydroxoscandat(III), K₃[Sc(OH)₆] mit den isotypen Hydroxometallaten Rb₃[Sc(OH)₆], K₃[Cr(OH)₆] und Rb₃[Cr(OH)₆]

Hennig

Jacobs

1992

Zeitschrift anorg allge chemie

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Ternäre Hydroxide M 3I{MIII(OH)6}mit MI  K, Rb und MIII  Sc, Cr wurden analog zu K3[Cr(OH)6] [1] aus Alkalimetallamiden und d‐Metallnitraten durch Komproportionierung von Amid‐ und Nitrationen zu elementarem Stickstoff und Hydroxidionen in überkritischem Ammoniak bei 523 K und 3 ≤ p(NH3) ≤ 6 kbar innerhalb von 1 bis 3 Monaten dargestellt. Die Atomanordnungen der Verbindungen wurden einschließlich der H‐Positionen röntgenographisch an Einkristallen bestimmt. Das Größenverhältnis r(MI)/r(MIII) korreliert mit der Symmetrie dieser Verbindungen. Strukturchemische Beziehungen von K3[Sc(OH)6 zu Rb3[Sc(OH)6], K3[Cr(OH)6], Rb3[Cr(OH)6] zu K4[CdCl6] [4] werden diskutiert.

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ChemInform Abstract: HIGH‐PRESSURE AMMONOLYSIS IN SOLID‐STATE CHEMISTRY

Cited by 14 publications

References 0 publications

Chemistry of Ammonothermal Synthesis

Chemistry of Ammonothermal Synthesis

Sodium Amide

Strukturchemische Verwandtschaft von Kaliumhexahydroxoscandat(III), K₃[Sc(OH)₆] mit den isotypen Hydroxometallaten Rb₃[Sc(OH)₆], K₃[Cr(OH)₆] und Rb₃[Cr(OH)₆]

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ChemInform Abstract: HIGH‐PRESSURE AMMONOLYSIS IN SOLID‐STATE CHEMISTRY

Cited by 14 publications

References 0 publications

Chemistry of Ammonothermal Synthesis

Chemistry of Ammonothermal Synthesis

Sodium Amide

Strukturchemische Verwandtschaft von Kaliumhexahydroxoscandat(III), K3[Sc(OH)6] mit den isotypen Hydroxometallaten Rb3[Sc(OH)6], K3[Cr(OH)6] und Rb3[Cr(OH)6]

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Strukturchemische Verwandtschaft von Kaliumhexahydroxoscandat(III), K₃[Sc(OH)₆] mit den isotypen Hydroxometallaten Rb₃[Sc(OH)₆], K₃[Cr(OH)₆] und Rb₃[Cr(OH)₆]