1
|
Pointner MM, Fisher KR, Weidemann M, Wolf F, Wright JP, Bright EL, Giacobbe C, Oeckler O, Schnick W. Cr 5.7Si 2.3P 8N 24-A Chromium(+IV) Nitridosilicate Phosphate with Amphibole-Type Structure. Angew Chem Int Ed Engl 2024; 63:e202401421. [PMID: 38361110 DOI: 10.1002/anie.202401421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 02/07/2024] [Accepted: 02/15/2024] [Indexed: 02/17/2024]
Abstract
The first nitridic analog of an amphibole mineral, the quaternary nitridosilicate phosphate Cr5.7Si2.3P8N24 was synthesized under high-pressure high-temperature conditions at 1400 °C and 12 GPa from the binary nitrides Cr2N, Si3N4 and P3N5, using NH4N3 and NH4F as additional nitrogen source and mineralizing agent, respectively. The crystal structure was elucidated by single-crystal X-ray diffraction with microfocused synchrotron radiation (C2/m, a=9.6002(19), b=17.107(3), c=4.8530(10) Å, β=109.65(3)°). The elemental composition was analyzed by energy dispersive X-ray spectroscopy. The structure consists of vertex-sharing PN4-tetrahedra forming zweier double chains and edge-sharing (Si,Cr)-centered octahedra forming separated ribbons. Atomic resolution scanning transmission electron microscopy shows ordered Si and Cr sites next to a disordered Si/Cr site. Optical spectroscopy indicates a band gap of 2.1 eV. Susceptibility measurements show paramagnetic behavior and support the oxidation state Cr+IV, which is confirmed by EPR. The comprehensive analysis expands the field of Cr-N chemistry and provides access to a nitride analog of one of the most prevalent silicate structures.
Collapse
Affiliation(s)
- Monika M Pointner
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Katherine R Fisher
- Department of Chemical and Pharmaceutical Sciences, London Metropolitan University, 166-220 Holloway Road, London, N7 8DB, United Kingdom
| | - Martin Weidemann
- Department of Chemistry, Ludwig-Maximilians-University Munich, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Florian Wolf
- 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 of 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
| |
Collapse
|
2
|
Endrass S, Klapötke T, Lommel M, Stierstorfer J, Weidemann M, Werner M. 1- and 2-Tetrazolylacetonitrile as Versatile Ligands for Laser Ignitable Energetic Coordination Compounds. Chempluschem 2024:e202400031. [PMID: 38436519 DOI: 10.1002/cplu.202400031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 01/30/2024] [Accepted: 03/04/2024] [Indexed: 03/05/2024]
Abstract
1- and 2-Tetrazolylacetonitrile (1- and 2-TAN) have been synthesized by the reaction of chloroacetonitrile with 1H-Tetrazole under basic conditions. They further were reacted with sodium azide in the presence of zinc(II) chloride to form 5-((1H-tetrazol-1-yl)methyl)-1H-tetrazole (1-HTMT) and 5-((2H-tetrazol-2-yl)methyl)-1H-tetrazole (2-HTMT). The nitrogen-rich compounds have been applied as ligands for Energetic Coordination Compounds (ECCs) and show interesting coordinative behavior due to different bridging modes. The structural variability of the compounds has been proved by low-temperature X-ray analysis. The ECCs were analyzed for their sensitivities to provide information about the safety of handling and their capability to serve as primary explosives in detonator setups to replace the commonly used lead styphnate and azide. All colored ECCs were evaluated for their ignitability by a laser diode in translucent polycarbonate primer caps. In addition, the spin-crossover characteristics of [Fe(1-TAN)6](ClO4)2 were highlighted by the measurement of the temperature-dependent susceptibility curve.
Collapse
Affiliation(s)
- Simon Endrass
- LMU Munich, Chemistry, Butenandtstr. 5-13, 81377, München, GERMANY
| | - Thomas Klapötke
- LMU Munich, Chemistry, Butenandtstr. 5-13, 81377, München, GERMANY
| | - Marcus Lommel
- LMU Munich, Chemistry, Butenandtstr. 5-13, München, 81377, München, GERMANY
| | - Joerg Stierstorfer
- Ludwig Maximilians Universität München, Chemistry and Biochemistry, Butenandtstr. 5-13, Haus D, 81377, München, GERMANY
| | - Martin Weidemann
- LMU Munich, Chemistry, Butenandtstr. 5-13, 81377, München, GERMANY
| | - Melanie Werner
- LMU Munich, Chemistry, Butenandtstr. 5-13, 81377, München, GERMANY
| |
Collapse
|
3
|
Elzer E, Weidemann M, Schnick W. Eu
3
Be
22
N
16
O: A Highly Condensed Oxonitridoberyllate. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Eugenia Elzer
- Department of Chemistry University of Munich (LMU) Butenandtstrasse 5–13 (D) 81377 Munich Germany
| | - Martin Weidemann
- Department of Chemistry University of Munich (LMU) Butenandtstrasse 5–13 (D) 81377 Munich Germany
| | - Wolfgang Schnick
- Department of Chemistry University of Munich (LMU) Butenandtstrasse 5–13 (D) 81377 Munich Germany
| |
Collapse
|
4
|
Stauber M, Mai M, Lobschat K, Weidemann M, Schuster-Gossler K, Kellner M, Dittrich-Breiholz O, Kühnel MP, Gossler A. Genome-wide microarray-based screen for FOXJ1-dependent ciliary factors in the murine lung. Pneumologie 2014. [DOI: 10.1055/s-0034-1376841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
5
|
Diesner SB, Rhiem K, Stewen K, Weidemann M, Schade T, Noesselt T. Assistenzärzte gründen regionales Weiterbildungsforum für Gynäkologie und Geburtshilfe. Geburtshilfe Frauenheilkd 2008. [DOI: 10.1055/s-0028-1088891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
|
6
|
Weidemann M, Homborg H. OsII-Phthalocyaninate(2?): Darstellung und Eigenschaften von (Halogeno)-(carbonyl)phthalocyaninato(2?)osmat(II). Z Anorg Allg Chem 1996. [DOI: 10.1002/zaac.19966221217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
7
|
Weidemann M, Homborg H. Ruthenium(II)-Phthalocyaninate(1-): Darstellung und Eigenschaften von (Halogeno)(carbonyl)phthalocyaninato(1-)ruthenium(II). Z Anorg Allg Chem 1996. [DOI: 10.1002/zaac.19966221013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
8
|
Weidemann M, Homborg H. Ruthenium(II)-Phthalocyaninate(2-): Darstellung und Eigenschaften von Acido(carbonyl)phthalocyaninato(2-)ruthenat(II), [Ru(X)(CO)Pc2?]? (X = Cl, Br, I, NCO, NCS, N3). Z Anorg Allg Chem 1996. [DOI: 10.1002/zaac.19966220713] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
9
|
Sievertsen S, Weidemann M, Tsantzi-Krause O, Homborg H. Ruthenium(III)-Phthalocyanine: Darstelllung und Eigenschaften von Di(halogeno)phthalocyaninato(1?)ruthenium(III), [Ru(X)2Pc] (X = Cl, Br, I). Z Anorg Allg Chem 1995. [DOI: 10.1002/zaac.19956210922] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
10
|
Abstract
Pretreatment of rat thymus lymphocytes with N-ethyl-maleimide prevents the stimulation of 3-O-methyl-glucose transport by concanavalin A or ionophore A23187 but does not affect the ability of concanavalin A to induce a rapid increase in cellular Ca2+take. N-ethyl-maleikide added after concanavalin A amplifies rather than prevents the subsequent stimulation of 3-O-methyl-glucose transport. Incubation of thymocytes with concanavalin A produces a decrease of 43% in the apparent Ki for phloretin, a competitive inhibitor of 3-O-methyl-glucose transport, without affecting the apparent Km for the substrate. Similarly, very low concentrations of cytochalasin B inhibit concanavalin A-stimulated glucose transport preferentially, without markedly affecting the unstimulated transport rates. The similarity between concanavalin A-stimulated 3-O-methyl-glucose transport in thymocytes and insulin-stimulated glucose transport in adipose tissue, with particular emphasis on the effects of the modifying agents described in this paper, is discussed.
Collapse
|