1
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Pointner MM, Pritzl RM, Albrecht JM, Blahusch L, Wright JP, Bright EL, Giacobbe C, Oeckler O, Schnick W. Multicationic Tetrahedra Networks: Alkaline-Earth-Centered Polyhedra and Non-Condensed AlN 6-Octahedra in the Imidonitridophosphates AE 2AlP 8N 15(NH) (AE=Ca, Sr, Ba). Chemistry 2024; 30:e202400766. [PMID: 38483015 DOI: 10.1002/chem.202400766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Indexed: 04/05/2024]
Abstract
A series of isostructural imidonitridophosphates AE2AlP8N15(NH) (AE=Ca, Sr, Ba) was synthesized at high-pressure/high-temperature conditions (1400 °C and 5-9 GPa) from alkaline-earth metal nitrides or azides Ca3N2/Sr(N3)2/Ba(N3)2 and the binary nitrides AlN and P3N5. NH4F served as a hydrogen source and mineralizing agent. The crystal structures were determined by single-crystal X-ray diffraction and feature a three-dimensional network of vertex-sharing PN4-tetrahedra forming diverse-sized rings that are occupied by aluminum and alkaline earth ions. These structures represent another example of nitridophosphate-based networks that simultaneously incorporate AlN6-octahedra and alkaline-earth-centered polyhedra, with aluminum not participating in the tetrahedra network. They differ from previously reported ones by incorporating non-condensed octahedra instead of strongly condensed octahedra units and contribute to the diversity of multicationic nitridophosphate network structures. The results are supported by atomic resolution EDX mapping, solid-state NMR and FTIR measurements. Eu2+-doped samples show strong luminescence with narrow emissions in the range of green to blue under UV excitation, marking another instance of Eu2+-luminescence within imidonitridophosphates.
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Affiliation(s)
- Monika M Pointner
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Reinhard M Pritzl
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Jonas M Albrecht
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Leopold Blahusch
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Jonathan P Wright
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, CS40220, 38043, Grenoble Cedex 9, France
| | - Eleanor Lawrence Bright
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, CS40220, 38043, Grenoble Cedex 9, France
| | - Carlotta Giacobbe
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, CS40220, 38043, Grenoble Cedex 9, France
| | - Oliver Oeckler
- Institute for Inorganic Chemistry and Crystallography, Leipzig University, Scharnhorststraße 20, 04275, Leipzig, Germany
| | - Wolfgang Schnick
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5-13, 81377, Munich, Germany
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2
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Eisenburger L, Weippert V, Oeckler O, Schnick W. High-Pressure Synthesis of Sc 5 P 12 N 23 O 3 and Ti 5 P 12 N 24 O 2 by Activation of the Binary Nitrides ScN and TiN with NH 4 F. Chemistry 2021; 27:14184-14188. [PMID: 34407247 PMCID: PMC8596507 DOI: 10.1002/chem.202101858] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Indexed: 11/10/2022]
Abstract
Multinary transition metal nitrides and oxonitrides are a versatile and intriguing class of compounds. However, they have been investigated far less than pure oxides. The compounds Sc5 P12 N23 O3 and Ti5 P12 N24 O2 have now been synthesized from the binary nitrides ScN and TiN, respectively, by following a high-pressure high-temperature approach at 8 GPa and 1400 °C. NH4 F acts as a mineralizing agent that supports product formation and crystallization. The starting materials ScN and TiN are seemingly an uncommon choice because of their chemical inertness but, nevertheless, react under these conditions. Sc5 P12 N23 O3 and Ti5 P12 N24 O2 crystallize isotypically with Ti5 B12 O26 , consisting of solely vertex-sharing P(O/N)4 tetrahedra forming two independent interpenetrating diamond-like nets that host TM(O/N)6 (TM=Sc, Ti) octahedra. Ti5 P12 N24 O2 is a mixed-valence compound and shows ordering of Ti3+ and Ti4+ ions.
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Affiliation(s)
- Lucien Eisenburger
- Department of ChemistryUniversity of Munich (LMU)Butenandtstraße 5–1381377MunichGermany
| | - Valentin Weippert
- Department of ChemistryUniversity of Munich (LMU)Butenandtstraße 5–1381377MunichGermany
| | - Oliver Oeckler
- Institute for Mineralogy, Crystallography and Materials ScienceLeipzig UniversityScharnhorststraße 2004275LeipzigGermany
| | - Wolfgang Schnick
- Department of ChemistryUniversity of Munich (LMU)Butenandtstraße 5–1381377MunichGermany
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3
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Debbichi M, Alresheedi F. First-principles calculations of mechanical, electronic and optical properties of a new imidooxonitridophosphate. Chem Phys 2020. [DOI: 10.1016/j.chemphys.2020.110917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Wendl S, Eisenburger L, Strobel P, Günther D, Wright JP, Schmidt PJ, Oeckler O, Schnick W. Nitridophosphate-Based Ultra-Narrow-Band Blue-Emitters: Luminescence Properties of AEP 8 N 14 :Eu 2+ (AE=Ca, Sr, Ba). Chemistry 2020; 26:7292-7298. [PMID: 32267576 PMCID: PMC7318337 DOI: 10.1002/chem.202001129] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Indexed: 11/12/2022]
Abstract
The nitridophosphates AEP8 N14 (AE=Ca, Sr, Ba) were synthesized at 4-5 GPa and 1050-1150 °C applying a 1000 t press with multianvil apparatus, following the azide route. The crystal structures of CaP8 N14 and SrP8 N14 are isotypic. The space group Cmcm was confirmed by powder X-ray diffraction. The structure of BaP8 N14 (space group Amm2) was elucidated by a combination of transmission electron microscopy and diffraction of microfocused synchrotron radiation. Phase purity was confirmed by Rietveld refinement. IR spectra are consistent with the structure models and the chemical compositions were confirmed by X-ray spectroscopy. Luminescence properties of Eu2+ -doped samples were investigated upon excitation with UV to blue light. CaP8 N14 (λem =470 nm; fwhm=1380 cm-1 ) and SrP8 N14 (λem =440 nm; fwhm=1350 cm-1 ) can be classified as the first ultra-narrow-band blue-emitting Eu2+ -doped nitridophosphates. BaP8 N14 shows a notably broader blue emission (λem =417/457 nm; fwhm=2075/3550 cm-1 ).
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Affiliation(s)
- Sebastian Wendl
- Department of ChemistryUniversity of Munich (LMU)Butenandtstr. 5–1381377MünchenGermany
| | - Lucien Eisenburger
- Department of ChemistryUniversity of Munich (LMU)Butenandtstr. 5–1381377MünchenGermany
- Institute for Mineralogy, Crystallography and Material ScienceLeipzig UniversityScharnhorststr. 2004275LeipzigGermany
| | - Philipp Strobel
- Lumileds Phosphor Center Aachen (LPCA)Lumileds (Germany) GmbHPhilipsstr. 852068AachenGermany
| | - Daniel Günther
- Institute for Mineralogy, Crystallography and Material ScienceLeipzig UniversityScharnhorststr. 2004275LeipzigGermany
| | | | - Peter J. Schmidt
- Lumileds Phosphor Center Aachen (LPCA)Lumileds (Germany) GmbHPhilipsstr. 852068AachenGermany
| | - Oliver Oeckler
- Institute for Mineralogy, Crystallography and Material ScienceLeipzig UniversityScharnhorststr. 2004275LeipzigGermany
| | - Wolfgang Schnick
- Department of ChemistryUniversity of Munich (LMU)Butenandtstr. 5–1381377MünchenGermany
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5
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Kloß SD, Schnick W. Nitridophosphate – eine Erfolgsgeschichte der Nitridsynthese. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201812791] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Simon D. Kloß
- Department Chemie Ludwig-Maximilians-Universität München (LMU) Butenandtstraße 5–13 81377 München Deutschland
| | - Wolfgang Schnick
- Department Chemie Ludwig-Maximilians-Universität München (LMU) Butenandtstraße 5–13 81377 München Deutschland
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6
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Kloß SD, Schnick W. Nitridophosphates: A Success Story of Nitride Synthesis. Angew Chem Int Ed Engl 2019; 58:7933-7944. [PMID: 30485618 DOI: 10.1002/anie.201812791] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Indexed: 11/09/2022]
Abstract
Nitridophosphates and phosphorus nitrides are thoroughly investigated classes of nitrides. During thirty years of research, the methods for their synthesis evolved from the condensation of molecular precursors at moderate temperatures and ambient pressures to state-of-the-art high-pressure and high-temperature processes. Landmark breakthroughs made in recent years led to a comprehension-based proficiency in nitridophosphate synthesis that is illustrated by the large compositional and structural diversity of the nitridophosphates known today. Herein, we review the advances made in synthesis with regard to the prevalent problem of nitride synthesis: the susceptibility of nitride ions to oxidation.
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Affiliation(s)
- Simon D Kloß
- Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, 81377, Munich, Germany
| | - Wolfgang Schnick
- Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, 81377, Munich, Germany
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7
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Vogel S, Buda AT, Schnick W. Rivalry under Pressure: The Coexistence of Ambient-Pressure Motifs and Close-Packing in Silicon Phosphorus Nitride Imide SiP 2 N 4 NH. Angew Chem Int Ed Engl 2019; 58:3398-3401. [PMID: 30653792 DOI: 10.1002/anie.201813789] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Indexed: 11/07/2022]
Abstract
Non-metal nitrides such as BN, Si3 N4 , and P3 N5 meet numerous demands on high-performance materials, and their high-pressure polymorphs exhibit outstanding mechanical properties. Herein, we present the silicon phosphorus nitride imide SiP2 N4 NH featuring sixfold coordinated Si. Using the multi-anvil technique, SiP2 N4 NH was obtained by high-pressure high-temperature synthesis at 8 GPa and 1100 °C with in situ formed HCl acting as a mineralizer. Its structure was elucidated by a combination of single-crystal X-ray diffraction and solid-state NMR measurements. Moreover, SiP2 N4 NH was characterized by energy-dispersive X-ray spectroscopy and (temperature-dependent) powder X-ray diffraction. The highly condensed Si/P/N framework features PN4 tetrahedra as well as the rare motif of SiN6 octahedra, and is discussed in the context of ambient-pressure motifs competing with close-packing of nitride anions, representing a missing link in the high-pressure chemistry of non-metal nitrides.
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Affiliation(s)
- Sebastian Vogel
- Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, 81377, Munich, Germany
| | - Amalina T Buda
- Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, 81377, Munich, Germany
| | - Wolfgang Schnick
- Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, 81377, Munich, Germany
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8
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Vogel S, Buda AT, Schnick W. Rivalry under Pressure: The Coexistence of Ambient‐Pressure Motifs and Close‐Packing in Silicon Phosphorus Nitride Imide SiP
2
N
4
NH. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813789] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sebastian Vogel
- Department of ChemistryUniversity of Munich (LMU) Butenandtstraße 5–13 81377 Munich Germany
| | - Amalina T. Buda
- Department of ChemistryUniversity of Munich (LMU) Butenandtstraße 5–13 81377 Munich Germany
| | - Wolfgang Schnick
- Department of ChemistryUniversity of Munich (LMU) Butenandtstraße 5–13 81377 Munich Germany
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9
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Vogel S, Buda AT, Schnick W. United in Nitride: The Highly Condensed Boron Phosphorus Nitride BP
3
N
6. Angew Chem Int Ed Engl 2018; 57:13202-13205. [DOI: 10.1002/anie.201808111] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Sebastian Vogel
- Department of ChemistryUniversity of Munich (LMU) Butenandtstraße 5–13 81377 Munich Germany
| | - Amalina T. Buda
- Department of ChemistryUniversity of Munich (LMU) Butenandtstraße 5–13 81377 Munich Germany
| | - Wolfgang Schnick
- Department of ChemistryUniversity of Munich (LMU) Butenandtstraße 5–13 81377 Munich Germany
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10
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Wendl S, Schnick W. SrH 4 P 6 N 12 and SrP 8 N 14 : Insights into the Condensation Mechanism of Nitridophosphates under High Pressure. Chemistry 2018; 24:15889-15896. [PMID: 30136742 DOI: 10.1002/chem.201803125] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Indexed: 11/09/2022]
Abstract
The (imido)nitridophosphates SrH4 P6 N12 and SrP8 N14 were synthesized as colorless crystals by high-pressure/high-temperature reactions using the multianvil technique (5 GPa, ca. 1075 °C). Stoichiometric amounts of Sr(N3 )2, P3 N5 , and amorphous HPN2 were used as starting materials. Whereas the crystal structure of SrH4 P6 N12 was solved and refined from single-crystal X-ray diffraction data and confirmed by Rietveld refinement, the structure of SrP8 N14 was determined from powder diffraction data. In order to confirm the structures, 1 H and 31 P solid-state NMR spectroscopy and FTIR spectroscopy were carried out. The chemical composition was confirmed with EDX measurements. Both compounds show unprecedented layered network structure types, built up from all-side vertex-sharing PN4 tetrahedra which are structurally related. The structural comparison of both compounds gives first insights into the hitherto unknown condensation mechanism of nitridophosphates under high pressure.
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Affiliation(s)
- Sebastian Wendl
- 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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11
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Vogel S, Schnick W. SrP 3 N 5 NH: A Framework-Type Imidonitridophosphate Featuring Structure-Directing Hydrogen Bonds. Chemistry 2018; 24:14275-14281. [PMID: 30004596 DOI: 10.1002/chem.201803210] [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: 06/25/2018] [Revised: 07/12/2018] [Indexed: 11/09/2022]
Abstract
Nitridophosphates and imidonitridophosphates show intriguing structural diversity, including unprecedented structure types. Highly condensed strontium imidonitridophosphate SrP3 N5 NH has been synthesized at 8 GPa and 1100 °C using a high-pressure high-temperature approach starting from stoichiometric amounts of Sr(N3 )2 , P3 N5 and NH4 Cl. Herein, NH4 Cl was used as a hydrogen source and as a precursor for in situ formation of SrCl2 , which acts as mineralizer and facilitates growth of single-crystals with a diameter of ≤30 μm. SrP3 N5 NH (P21 /c (no. 14), a=5.01774(2), b=8.16912(4), c=12.70193(5) Å, β=101.7848(3)°, Z=4) adopts an unprecedented network structure, represented by the point symbol (3.4.5.6.72 )(3.4.5.72 .8)(3.6.73 .8). This unique three nodal P/N(H) network is stabilized by moderately strong hydrogen bonds causing a structure-directing effect, which has not yet been reported for imidonitridophosphates.
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Affiliation(s)
- Sebastian Vogel
- Department of Chemistry, University of Munich (LMU), Butendandtstrasse 5-13, 81377, Munich, Germany
| | - Wolfgang Schnick
- Department of Chemistry, University of Munich (LMU), Butendandtstrasse 5-13, 81377, Munich, Germany
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12
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Vogel S, Buda AT, Schnick W. United in Nitride: The Highly Condensed Boron Phosphorus Nitride BP
3
N
6. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808111] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sebastian Vogel
- Department of ChemistryUniversity of Munich (LMU) Butenandtstraße 5–13 81377 Munich Germany
| | - Amalina T. Buda
- Department of ChemistryUniversity of Munich (LMU) Butenandtstraße 5–13 81377 Munich Germany
| | - Wolfgang Schnick
- Department of ChemistryUniversity of Munich (LMU) Butenandtstraße 5–13 81377 Munich Germany
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13
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Bertschler EM, Dietrich C, Leichtweiß T, Janek J, Schnick W. Li + Ion Conductors with Adamantane-Type Nitridophosphate Anions β-Li 10 P 4 N 10 and Li 13 P 4 N 10 X 3 with X=Cl, Br. Chemistry 2017; 24:196-205. [PMID: 29027753 DOI: 10.1002/chem.201704305] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Indexed: 11/09/2022]
Abstract
β-Li10 P4 N10 and Li13 P4 N10 X3 with X=Cl, Br have been synthesized from mixtures of P3 N5 , Li3 N, LiX, LiPN2 , and Li7 PN4 at temperatures below 850 °C. β-Li10 P4 N10 is the low-temperature polymorph of α-Li10 P4 N10 and crystallizes in the trigonal space group R3. It is made up of non-condensed [P4 N10 ]10- T2 supertetrahedra, which are arranged in sphalerite-analogous packing. Li13 P4 N10 X3 (X=Cl, Br) crystallizes in the cubic space group Fm3‾m . Both isomorphic compounds comprise adamantane-type [P4 N10 ]10- , Li+ ions, and halides, which form octahedra. These octahedra build up a face-centered cubic packing, whose tetrahedral voids are occupied by the [P4 N10 ]10- ions. The crystal structures have been elucidated from X-ray powder diffraction data and corroborated by EDX measurements, solid-state NMR, and FTIR spectroscopy. Furthermore, we have examined the phase transition between α- and β-Li10 P4 N10 . To confirm the ionic character, the migration pathways of the Li+ ions have been evaluated and the ion conductivity and its temperature dependence have been determined by impedance spectroscopy. XPS measurements have been carried out to analyze the stability with respect to Li metal.
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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 University Giessen, Heinrich-Buff-Ring 17, 35392, Gießen, Germany.,Center for Materials Research (LaMa), Justus Liebig Universtiy Giessen, Heinrich-Buff-Ring 16, 35392, Gießen, Germany
| | - Thomas Leichtweiß
- Center for Materials Research (LaMa), Justus Liebig Universtiy Giessen, Heinrich-Buff-Ring 16, 35392, Gießen, Germany
| | - Jürgen Janek
- Institute of Physical Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Gießen, Germany.,Center for Materials Research (LaMa), Justus Liebig Universtiy Giessen, Heinrich-Buff-Ring 16, 35392, Gießen, Germany
| | - Wolfgang Schnick
- Department of Chemistry, University of Munich (LMU), Butenandtstr. 5-13, 81377, München, Germany
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14
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Kloß SD, Weidmann N, Schnick W. Antiperovskite Nitridophosphate Oxide Ho3[PN4]O by High-Pressure Metathesis. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601425] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Simon D. Kloß
- Department of Chemistry; University of Munich (LMU); Butenandtstraße 5-13 81377 Munich Germany
| | - Niels Weidmann
- Department of Chemistry; University of Munich (LMU); Butenandtstraße 5-13 81377 Munich Germany
| | - Wolfgang Schnick
- Department of Chemistry; University of Munich (LMU); Butenandtstraße 5-13 81377 Munich Germany
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15
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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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16
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Neudert L, Heinke F, Bräuniger T, Pucher FJ, Vaughan GB, Oeckler O, Schnick W. An unusual nitride network of aluminum-centered octahedra and phosphorus-centered tetrahedra and structure determination from microcrystalline samples. Chem Commun (Camb) 2017; 53:2709-2712. [DOI: 10.1039/c7cc00233e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aluminum coordinated by six nitrogen atoms was realized in a new highly condensed network which was obtained via HP–HT synthesis at 5 GPa.
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Affiliation(s)
- Lukas Neudert
- University of Munich (LMU)
- Department of Chemistry
- 81377 Munich
- Germany
| | - Frank Heinke
- Leipzig University
- Faculty of Chemistry and Mineralogy
- 04275 Leipzig
- Germany
| | - Thomas Bräuniger
- University of Munich (LMU)
- Department of Chemistry
- 81377 Munich
- Germany
| | - Florian J. Pucher
- University of Munich (LMU)
- Department of Chemistry
- 81377 Munich
- Germany
| | | | - Oliver Oeckler
- Leipzig University
- Faculty of Chemistry and Mineralogy
- 04275 Leipzig
- Germany
| | - Wolfgang Schnick
- University of Munich (LMU)
- Department of Chemistry
- 81377 Munich
- Germany
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17
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Marchuk A, Schultz P, Hoch C, Oeckler O, Schnick W. M2PO3N (M = Ca, Sr): ortho-Oxonitridophosphates with β-K2SO4 Structure Type. Inorg Chem 2015; 55:974-82. [DOI: 10.1021/acs.inorgchem.5b02647] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexey Marchuk
- Department
of Chemistry, University of Munich (LMU), Butenandtstraße 5−13, 81377 Munich, Germany
| | - Peter Schultz
- Institute
of Mineralogy, Crystallography and Materials Science, Faculty of Chemistry
and Mineralogy, Leipzig University, Scharnhorststraße 20, 04275 Leipzig, Germany
| | - Constantin Hoch
- Department
of Chemistry, University of Munich (LMU), Butenandtstraße 5−13, 81377 Munich, Germany
| | - Oliver Oeckler
- Institute
of Mineralogy, Crystallography and Materials Science, Faculty of Chemistry
and Mineralogy, Leipzig University, Scharnhorststraße 20, 04275 Leipzig, Germany
| | - Wolfgang Schnick
- Department
of Chemistry, University of Munich (LMU), Butenandtstraße 5−13, 81377 Munich, Germany
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18
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Li G, Tian Y, Zhao Y, Lin J. Recent progress in luminescence tuning of Ce3+and Eu2+-activated phosphors for pc-WLEDs. Chem Soc Rev 2015; 44:8688-713. [DOI: 10.1039/c4cs00446a] [Citation(s) in RCA: 625] [Impact Index Per Article: 69.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This review is devoted to several approaches to realize spectral tuning for improving the luminescence performance of Ce3+and Eu2+-activated pc-WLED phosphors.
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Affiliation(s)
- Guogang Li
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- P. R. China
| | - Ying Tian
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- P. R. China
| | - Yun Zhao
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- P. R. China
| | - Jun Lin
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
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