ChemInform Abstract: Sn<sub>3</sub>N<sub>4</sub>, a Tin(IV) Nitride — Syntheses and the First Crystal Structure Determination of a Binary Tin—Nitrogen Compound.

Scotti, Nicole; Kockelmann, W.; Senker, Jürgen; Traßel, St.; Jacobs, H.

doi:10.1002/chin.199947033

Cited by 8 publications

(13 citation statements)

References 2 publications

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“…Spinel-type silicon nitride γ-Si 3 N 4 is a high-pressure phase of silicon nitride and has been discovered in 1999 1 . In the same year, from the group 14 element, spinel type Ge 3 N 4 2 and Sn 3 N 4 3 have been found afterwards. Based on these experimental findings, Ching et al predicted a variety of binary and ternary nitrides including nitrides of transition metal elements 4 .…”

mentioning

confidence: 89%

Discovery of Ternary Silicon Titanium Nitride with Spinel-Type Structure

Bhat

Lale

Bernard

et al. 2020

Sci Rep

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Here we report on the discovery of a ternary silicon titanium nitride with the general composition (Si 1−x ,ti x) 3 n 4 with x = 0 < x < 1 and spinel-type crystal structure. The novel nitride is formed from an amorphous silicon titanium nitride (Sitin) precursor under high-pressure/high-temperature conditions in a large volume high-pressure device. Under the conditions of 15-20 GPa and 1800-2000 °C, spineltype γ-Si 3 n 4 and rock salt-type c-TiN are formed. In addition, crystals of the discovered nano-sized ternary phase (Si 1−x ,ti x) 3 n 4 embedded in γ-Si 3 n 4 are identified. The ternary compound is formed due to kinetically-controlled synthesis conditions and is analyzed to exhibit the spinel-type structure with ca. 8 atom% of Ti. The Ti atoms occur in both Ti 3+ and ti 4+ oxidation states and are located on the Si sites. the ternary nano-crystals have to be described as (Si,ti) 3 n 4 with n-vacancies resulting in the general composition (Si 4+ 1−x ti 4+ x-δ ti 3+ δ) 3 n 4-δ .

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mentioning

confidence: 89%

Discovery of Ternary Silicon Titanium Nitride with Spinel-Type Structure

Bhat

Lale

Bernard

et al. 2020

Sci Rep

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“…0.02% Cr) [182], GaN:Zn and GaN:Mg [211]. Cubic tin nitride Sn 3 N 4 has been reported to form from SnI 4 or SnBr 4 with KNH 2 in liquid (but not supercritical) ammonia at 243 K followed by annealing in vacuo at 573 K [212].…”

Section: Group III and Iv Nitridesmentioning

confidence: 99%

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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“…In 1999, independent studies using synchrotron X-ray diffraction and Raman spectroscopy first revealed the cubic spinel-structured (γ−) polymorphs of the ceramic phases Si 3 N 4 and Ge 3 N 4 [39,40]. These constituted the first examples of the new class of nitride spinels, that were soon joined by the remaining group 14 member Sn 3 N 4 , initially prepared by chemical reaction techniques at near-ambient conditions [41] and later by HPHT synthesis [42]. The new nitride spinels have potentially useful optoelectronic properties including wide, direct bandgaps in the blue-UV range, comparable with (Ga,In,Al)N solid solutions [43][44][45] volume press syntheses that allowed structure determination by Rietveld refinement of powder X-ray diffraction data [39,40], and later led to preparation of γ-(Si,Ge) 3 N 4 solid solutions and intermediate compounds [46].…”

Section: Transition Metal Nitridesmentioning

confidence: 99%

New nitrides: from high pressure–high temperature synthesis to layered nanomaterials and energy applications

McMillan

2019

Phil. Trans. R. Soc. A.

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We describe work carried out within our group to explore new transition metal and main group nitride phases synthesized using high pressure–high temperature techniques using X-ray diffraction and spectroscopy at synchrotron sources in the USA, UK and France to establish their structures and physical properties. Along with previously published data, we also highlight additional results that have not been presented elsewhere and that represent new areas for further exploration. We also describe new work being carried out to explore the properties of carbon nitride materials being developed for energy applications and the nature of few-layered carbon nitride nanomaterials with atomically ordered structures that form solutions in polar liquids via thermodynamically driven exfoliation. This article is part of the theme issue ‘Fifty years of synchrotron science: achievements and opportunities’.

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ChemInform Abstract: Sn₃N₄, a Tin(IV) Nitride — Syntheses and the First Crystal Structure Determination of a Binary Tin—Nitrogen Compound.

Cited by 8 publications

References 2 publications

Discovery of Ternary Silicon Titanium Nitride with Spinel-Type Structure

Discovery of Ternary Silicon Titanium Nitride with Spinel-Type Structure

Chemistry of Ammonothermal Synthesis

New nitrides: from high pressure–high temperature synthesis to layered nanomaterials and energy applications

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ChemInform Abstract: Sn3N4, a Tin(IV) Nitride — Syntheses and the First Crystal Structure Determination of a Binary Tin—Nitrogen Compound.

Cited by 8 publications

References 2 publications

Discovery of Ternary Silicon Titanium Nitride with Spinel-Type Structure

Discovery of Ternary Silicon Titanium Nitride with Spinel-Type Structure

Chemistry of Ammonothermal Synthesis

New nitrides: from high pressure–high temperature synthesis to layered nanomaterials and energy applications

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Product

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ChemInform Abstract: Sn₃N₄, a Tin(IV) Nitride — Syntheses and the First Crystal Structure Determination of a Binary Tin—Nitrogen Compound.