1
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Günther D, Baumann D, Schnick W, Oeckler O. Modular Principle for Complex Disordered Tetrahedral Frameworks in Quenched High-Pressure Phases of Phosphorus Oxide Nitrides. Chemistry 2023; 29:e202203892. [PMID: 36720700 DOI: 10.1002/chem.202203892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/02/2023]
Abstract
The crystal structures of the new phosphorus oxide nitrides P40 O31 N46 and P74 O59 N84 , which were synthesized from amorphous phosphorus oxide nitride imide, exhibit complex frameworks built up from P(O,N)4 tetrahedra. The latter form various chain-like building units with various degrees of branching. These modular units can be combined and arranged in different ways, which leads to closely related structures and several disordered configurations in each compound. As the material was obtained by high-pressure high-temperature synthesis, the disorder is most likely a consequence of quenching a high-pressure phase with P(O,N)5 trigonal bipyramids. Under ambient conditions, P atoms are expected to relax by moving to the centers of the face-sharing tetrahedra that constitute the bipyramid. Diffraction patterns acquired with microfocused synchrotron radiation reveal that domains of both compounds are intergrown with H3 P8 O8 N9 , whose tetrahedral framework represents a cutout of the structures of both P40 O31 N46 and P74 O59 N84 . Powder diffraction patterns do not indicate any further phases.
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Affiliation(s)
- Daniel Günther
- Faculty for Chemistry and Mineralogy, Institute for Mineralogy, Crystallography and Materials Science, Leipzig University, Scharnhorststraße 20, 04275, Leipzig, Germany
| | - Dominik Baumann
- University of Munich (LMU), Butenandtstraße 5-13, (D) 81377, München, Germany
| | - Wolfgang Schnick
- University of Munich (LMU), Butenandtstraße 5-13, (D) 81377, München, Germany
| | - Oliver Oeckler
- Faculty for Chemistry and Mineralogy, Institute for Mineralogy, Crystallography and Materials Science, Leipzig University, Scharnhorststraße 20, 04275, Leipzig, Germany
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2
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Ambach SJ, Somers C, de Boer T, Eisenburger L, Moewes A, Schnick W. Structural Influence of Lone Pairs in GeP 2 N 4 , a Germanium(II) Nitridophosphate. Angew Chem Int Ed Engl 2023; 62:e202215393. [PMID: 36350660 PMCID: PMC10107938 DOI: 10.1002/anie.202215393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/09/2022] [Accepted: 11/09/2022] [Indexed: 11/11/2022]
Abstract
Owing to their widespread properties, nitridophosphates are of high interest in current research. Explorative high-pressure high-temperature investigations yielded various compounds with stoichiometry MP2 N4 (M=Be, Ca, Sr, Ba, Mn, Cd), which are discussed as ultra-hard or luminescent materials, when doped with Eu2+ . Herein, we report the first germanium nitridophosphate, GeP2 N4 , synthesized from Ge3 N4 and P3 N5 at 6 GPa and 800 °C. The structure was determined by single-crystal X-ray diffraction and further characterized by energy-dispersive X-ray spectroscopy, density functional theory calculations, IR and NMR spectroscopy. The highly condensed network of PN4 -tetrahedra shows a strong structural divergence to other MP2 N4 compounds, which is attributed to the stereochemical influence of the lone pair of Ge2+ . Thus, the formal exchange of alkaline earth cations with Ge2+ may open access to various compounds with literature-known stoichiometry, however, new structures and properties.
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Affiliation(s)
- Sebastian J Ambach
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Cody Somers
- Department of Physics and Engineering Physics, University of Saskatchewan, 116 Science Place, Saskatoon, Saskatchewan, S7 N 5E2, Canada
| | - Tristan de Boer
- Department of Physics and Engineering Physics, University of Saskatchewan, 116 Science Place, Saskatoon, Saskatchewan, S7 N 5E2, Canada
| | - Lucien Eisenburger
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Alexander Moewes
- Department of Physics and Engineering Physics, University of Saskatchewan, 116 Science Place, Saskatoon, Saskatchewan, S7 N 5E2, Canada
| | - Wolfgang Schnick
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5-13, 81377, Munich, Germany
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3
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Vogel S, Baumann D, Niklaus R, Bykova E, Bykov M, Dubrovinskaia N, Dubrovinsky L, Schnick W. Stishovite's Relative: A Post-Coesite Form of Phosphorus Oxonitride. Angew Chem Int Ed Engl 2018; 57:6691-6695. [PMID: 29656431 DOI: 10.1002/anie.201803610] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Indexed: 11/07/2022]
Abstract
Phosphorus oxonitride (PON) is isoelectronic with SiO2 and may exhibit a similar broad spectrum of intriguing properties as silica. However, PON has only been sparsely investigated under high-pressure conditions and there has been no evidence on a PON polymorph with a coordination number of P greater than 4. Herein, we report a post-coesite (pc) PON polymorph exhibiting a stishovite-related structure with P in a (5+1) coordination. The pc-PON was synthesized using the multianvil technique and characterized by powder X-ray diffraction, solid-state NMR spectroscopy, TEM measurements and in situ synchrotron X-ray diffraction in diamond anvil cells. The structure model was verified by single-crystal X-ray diffraction at 1.8 GPa and the isothermal bulk modulus of pc-PON was determined to K0 =163(2) GPa. Moreover, an orthorhombic PON polymorph (o-PON) was observed under high-pressure conditions and corroborated as the stable modification at pressures above 17 GPa by DFT calculations.
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Affiliation(s)
- Sebastian Vogel
- Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, 81377, Munich, Germany
| | - Dominik Baumann
- Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, 81377, Munich, Germany
| | - Robin Niklaus
- Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, 81377, Munich, Germany
| | - Elena Bykova
- Deutsches Elektronen-Synchrotron (DESY), 22607, Hamburg, Germany
| | - Maxim Bykov
- Bayerisches Geoinstitut (BGI), University of Bayreuth, 95440, Bayreuth, Germany
| | - Natalia Dubrovinskaia
- Material Physics and Technology at Extreme Conditions, University of Bayreuth, 95440, Bayreuth, Germany
| | - Leonid Dubrovinsky
- Bayerisches Geoinstitut (BGI), University of Bayreuth, 95440, Bayreuth, Germany
| | - Wolfgang Schnick
- Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, 81377, Munich, Germany
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4
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Vogel S, Baumann D, Niklaus R, Bykova E, Bykov M, Dubrovinskaia N, Dubrovinsky L, Schnick W. Stishovite's Relative: A Post‐Coesite Form of Phosphorus Oxonitride. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803610] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sebastian Vogel
- Department of ChemistryUniversity of Munich (LMU) Butenandtstrasse 5–13 81377 Munich Germany
| | - Dominik Baumann
- Department of ChemistryUniversity of Munich (LMU) Butenandtstrasse 5–13 81377 Munich Germany
| | - Robin Niklaus
- Department of ChemistryUniversity of Munich (LMU) Butenandtstrasse 5–13 81377 Munich Germany
| | - Elena Bykova
- Deutsches Elektronen-Synchrotron (DESY) 22607 Hamburg Germany
| | - Maxim Bykov
- Bayerisches Geoinstitut (BGI)University of Bayreuth 95440 Bayreuth Germany
| | - Natalia Dubrovinskaia
- Material Physics and Technology at Extreme ConditionsUniversity of Bayreuth 95440 Bayreuth Germany
| | - Leonid Dubrovinsky
- Bayerisches Geoinstitut (BGI)University of Bayreuth 95440 Bayreuth Germany
| | - Wolfgang Schnick
- Department of ChemistryUniversity of Munich (LMU) Butenandtstrasse 5–13 81377 Munich Germany
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5
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Bertschler EM, Niklaus R, Schnick W. Reversible Polymerization of Adamantane-type [P4
N10
]10−
Anions to Honeycomb-type [P2
N5
]5−
Layers under High-Pressure. Chemistry 2017; 24:736-742. [DOI: 10.1002/chem.201704975] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Indexed: 02/05/2023]
Affiliation(s)
- Eva-Maria Bertschler
- Department of Chemistry; University of Munich (LMU); Butenandtstr. 5-13 81377 München Germany
| | - Robin Niklaus
- Department of Chemistry; University of Munich (LMU); Butenandtstr. 5-13 81377 München Germany
| | - Wolfgang Schnick
- Department of Chemistry; University of Munich (LMU); Butenandtstr. 5-13 81377 München Germany
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6
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Bertschler EM, Dietrich C, Janek J, Schnick W. Li 18 P 6 N 16 -A Lithium Nitridophosphate with Unprecedented Tricyclic [P 6 N 16 ] 18- Ions. Chemistry 2017; 23:2185-2191. [PMID: 27977044 DOI: 10.1002/chem.201605316] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Indexed: 11/09/2022]
Abstract
Li18 P6 N16 was synthesized by reaction of LiPN2 and Li7 PN4 at 5.5 GPa and 1273 K employing the multi-anvil technique. It is the first lithium nitridophosphate obtained by high-pressure synthesis. Moreover, it is the first example received by reaction of two ternary lithium nitrides. The combination of high-pressure conditions with a Li3 N flux enabled a complete structure determination using single-crystal X-ray diffraction. The hitherto unknown tricyclic [P6 N16 ]18- anion is composed of six vertex-sharing PN4 tetrahedra forming one vierer- and two additional dreier-rings. To confirm the structure, Rietveld refinement, 7 Li and 31 P solid-state NMR spectroscopy, FTIR spectroscopy and EDX measurements were carried out. To validate the ionic properties, the migration pathways of the Li+ ions were evaluated, and the conductivity and its temperature dependence were determined by impedance spectroscopy measurements. In order to obtain a clearer picture of the formation mechanism of this compound class, different synthetic approaches were compared, enabling targeted syntheses of unprecedented P/N-anion topologies with intriguing properties.
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Affiliation(s)
- Eva-Maria Bertschler
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, München, Germany
| | - Christian Dietrich
- Institute of Physical Chemistry, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 17, 35392, Gießen, Germany
| | - Jürgen Janek
- Institute of Physical Chemistry, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 17, 35392, Gießen, Germany
| | - Wolfgang Schnick
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, München, Germany
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7
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Tolhurst TM, Braun C, Boyko TD, Schnick W, Moewes A. Experiment-Driven Modeling of Crystalline Phosphorus Nitride P3
N5
: Wide-Ranging Implications from a Unique Structure. Chemistry 2016; 22:10475-83. [DOI: 10.1002/chem.201601149] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Thomas M. Tolhurst
- Department of Physics and Engineering Physics; University of Saskatchewan; 116 Science Place Saskatoon Saskatchewan S7N 5E2 Canada
| | - Cordula Braun
- Karlsruher Institut für Technologie (KIT Karlsruhe); Institut für Angewandte Materialien-Energiespeichersysteme (IAM-ESS); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Fachbereich Material- und Geowissenschaften; Fachgebiet Strukturforschung; TU Darmstadt; Alarich-Weiss-Straße 2 64287 Darmstadt Germany
| | - Teak D. Boyko
- Department of Physics and Engineering Physics; University of Saskatchewan; 116 Science Place Saskatoon Saskatchewan S7N 5E2 Canada
| | - Wolfgang Schnick
- Department of Chemistry; University of Munich (LMU); Butenandtstrasse 5-13 81377 Munich Germany
| | - Alexander Moewes
- Department of Physics and Engineering Physics; University of Saskatchewan; 116 Science Place Saskatoon Saskatchewan S7N 5E2 Canada
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