Wolfgang Schnick

Ludwig-Maximilians-Universität München

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Oliver Oeckler

Leipzig University

182

Peter J. Schmidt

Philips (Germany)

171

Philipp Strobel

Philips (Germany)

Bettina V. Lotsch

Max Planck Institute for Solid State Research

Sandro Pagano

Imperial College London

Simon D. Kloß

Ludwig-Maximilians-Universität München

Leonid Dubrovinsky

University of Bayreuth

Natalia Dubrovinskaia

University of Bayreuth

Robin Niklaus

Ludwig-Maximilians-Universität München

Elisabeth Irran

Technische Universität Berlin

Cooperative Institutions

Ludwig-Maximilians-Universität München

297

Robert Bosch (Germany)

146

Laboratoire de Chimie Moléculaire et Thioorganique

Weatherford College

University of Bayreuth

Centre National de la Recherche Scientifique

Technical University of Munich

LMU Klinikum

University of Münster

Chinese Academy of Sciences

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Synthese von Cadmiumnitrid Cd₃N₂ durch thermischen Abbau von Cadmiumazid Cd(N₃)₂ und Kristallstrukturbestimmung aus Röntgen‐Pulverbeugungsdaten

Zeitschrift für anorganische und allgemeine Chemie (2007)

Friedrich Karau Wolfgang Schnick

Abstract Synthesis of Cadmium Nitride Cd 3 N 2 by Thermolysis of Cadmium Azide Cd(N 3 ) 2 and Crystal Structure Determination from X‐ray Powder Diffraction Data Cadmium nitride Cd 3 N 2 was obtained by thermolysis of cadmium azide Cd(N 3 ) 2 at 2·10 −6 mbar and 210 °C. It was obtained as a black, crystalline powder which becomes brown in air due to formation of cadmium amide Cd(NH 2 ) 2 . The crystal structure of Cd 3 N 2 was determined from X‐ray powder diffraction data and refined by the Rietveld method ( $Ia{\bar 3}$ , a = 10.829(9) Å, V = 1270(3) Å 3 , Z = 16, R(F 2 ) = 0.1196). Cd 3 N 2 crystallizes in the anti‐bixbyite structure type and is isotypic to Ca 3 N 2 .

Powder Diffraction

10.1002/zaac.200600253

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Citations (27)

High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride Re2(N2)(N)2 stable at ambient conditions

Nature Communications (2019)

Maxim Bykov Stella Chariton Hongzhan Fei Timofey Fedotenko Georgios Aprilis

Here we report the synthesis of metallic, ultraincompressible (bulk modulus $K_{0}$ = 428(10) GPa) and very hard (nanoindentation hardness 36.7(8) GPa) rhenium (V) nitride pernitride Re$_{2}$(N$_{2}$)N$_{2}$. While the empirical chemical formula of the compound, ReN$_{2}$, is the same as for other known transition metals pernitrides, e.g. IrN$_{2}$, PtN$_{2}$, PdN$_{2}$ and OsN$_{2}$, its crystal chemistry is unique. The known pernitrides of transition metals consist of a metal in the oxidation state +IV and pernitride anions N$_{2}^{4-}$. ReN$_{2}$ contains both pernitride N$_{2}^{4-}$ and discrete N$^{3-}$ anions, which explains its exceptional properties. Moreover, in the original experimental synthesis of Re$_{2}$(N$_{2}$)N$_{2}$ performed in a laser-heated diamond anvil cell via a direct reaction between rhenium and nitrogen at pressures from 40 to 90 GPa we observed that the material was recoverable at ambient conditions. Consequently, we developed a route to scale up its synthesis through a reaction between rhenium and ammonium azide, NH$_{4}$N$_{3}$, in a large-volume press at 33 GPa. Our work resulted not only in a discovery of a novel material with unusual crystal chemistry and a set of properties attractive for potential applications, but also demonstrated a feasibility of surmounting conceptions common in material sciences.

10.1038/s41467-019-10995-3

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Citations (35)

ChemInform Abstract: Ln₃[SiON₃]O (Ln: La, Ce, Pr) — Three Oxonitridosilicate Oxides with Crystal Structures Derived from the anti‐Perovskite Structure Type.

ChemInform (2010)

Juliane A. Kechele Christian Schmolke Saskia Lupart Wolfgang Schnick

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

10.1002/chin.201014016

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Ca[Si₂O₂N₂] – ein neuartiges Schichtsilicat

Angewandte Chemie (2004)

Henning A. Höppe Florian J. Stadler Oliver Oeckler Wolfgang Schnick

Einen gewellten, schichtartigen [Si2O2N2]2−-Anionenverband, der aus Dreierringen aufgebaut ist, enthält das Schichtsilicat Ca[Si2O2N2] (siehe Bild). Die ungewöhnliche Struktur ergibt sich aus der Tatsache, dass die N-Atome, anders als die O-Atome in Oxosilicaten, jeweils drei benachbarte Si-Tetraederzentren in den Schichten verbrücken, während die O-Atome ausschließlich terminal an die Si-Atome gebunden sind.

10.1002/ange.200460098

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Citations (57)

BaSm₅[Si₉Al₃N₂₀]O — A Nitridoaluminosilicate Oxide with a New Structure Type Composed of “Star‐Shaped” [N^[4]((Si,Al)N₃)₄] Units as Secondary Building Units.

ChemInform (2006)

Alexandra Lieb Wolfgang Schnick

Star (game theory)

10.1002/chin.200620004

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Poly(triazine imide) with Intercalation of Lithium and Chloride Ions [(C₃N₃)₂(NH_xLi_1−x)₃⋅LiCl]: A Crystalline 2D Carbon Nitride Network

Chemistry - A European Journal (2011)

Eva Wirnhier Markus Döblinger Daniel Gunzelmann Jürgen Senker Bettina V. Lotsch

Poly(triazine imide) with intercalation of lithium and chloride ions (PTI/Li(+)Cl(-)) was synthesized by temperature-induced condensation of dicyandiamide in a eutectic mixture of lithium chloride and potassium chloride as solvent. By using this ionothermal approach the well-known problem of insufficient crystallinity of carbon nitride (CN) condensation products could be overcome. The structural characterization of PTI/Li(+)Cl(-) resulted from a complementary approach using spectroscopic methods as well as different diffraction techniques. Due to the high crystallinity of PTI/Li(+)Cl(-) a structure solution from both powder X-ray and electron diffraction patterns using direct methods was possible; this yielded a triazine-based structure model, in contrast to the proposed fully condensed heptazine-based structure that has been reported recently. Further information from solid-state NMR and FTIR spectroscopy as well as high-resolution TEM investigations was used for Rietveld refinement with a goodness-of-fit (χ(2)) of 5.035 and wRp=0.05937. PTI/Li(+)Cl(-) (P6(3)cm (no. 185); a=846.82(10), c=675.02(9) pm) is a 2D network composed of essentially planar layers made up from imide-bridged triazine units. Voids in these layers are stacked upon each other forming channels running parallel to [001], filled with Li(+) and Cl(-) ions. The presence of salt ions in the nanocrystallites as well as the existence of sp(2)-hybridized carbon and nitrogen atoms typical of graphitic structures was confirmed by electron energy-loss spectroscopy (EELS) measurements. Solid-state NMR spectroscopy investigations using (15)N-labeled PTI/Li(+)Cl(-) proved the absence of heptazine building blocks and NH(2) groups and corroborated the highly condensed, triazine-based structure model.

Imide

10.1002/chem.201002462

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Citations (311)

CSD 1876250: Experimental Crystal Structure Determination

The Cambridge Structural Database (2018)

Niklas Cordes Thomas Bräuniger Wolfgang Schnick

10.25505/fiz.icsd.cc20zd6m

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CSD 2121163: Experimental Crystal Structure Determination

The Cambridge Structural Database (2022)

Lucien Eisenburger Valentin Weippert Carsten Paulmann Dirk Johrendt Oliver Oeckler

An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the joint CCDC and FIZ Karlsruhe Access Structures service and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Crystal (programming language)

10.25505/fiz.icsd.cc2967md

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ChemInform Abstract: Tl₄(PO₂NH)₄×H₂O — A Commensurately Modulated Tetrametaphosphimate.

ChemInform (2008)

Stefan J. Sedlmaier Oliver Oeckler Wolfgang Schnick

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

10.1002/chin.200850004

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CSD 1784095: Experimental Crystal Structure Determination

The Cambridge Structural Database (2012)

Sophia J. Makowski Arne Schwarze Peter J. Schmidt Wolfgang Schnick

Crystal (programming language)

10.25505/fiz.icsd.cc1xwhgr

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