Sodium hydride as a powerful reducing agent for topotactic oxide deintercalation: Synthesis and characterization of the nickel(I) oxide LaNiO2

Hayward, M.A. and Green, M.A. and Rosseinsky, M.J. and Sloan, J. (1999) Sodium hydride as a powerful reducing agent for topotactic oxide deintercalation: Synthesis and characterization of the nickel(I) oxide LaNiO2. Journal of the American Chemical Society, 121 (38). pp. 8843-8854. ISSN 00027863 (ISSN). E-ISSN 1520-5126. (doi:https://doi.org/10.1021/ja991573i) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
https://doi.org/10.1021/ja991573i

Abstract

The capability of sodium hydride as a reducing agent in oxide deintercalation reactions is explored. The Ni(III) perovskite LaNiO3 can be reduced topotactically to LaNiO2, isostructural with the 'infinite layer' cuprates, using solid sodium hydride in a sealed evacuated tube at 190 � T/°C � 210, and a similar infinite-layer phase is prepared by reduction of NdNiO3. Structural characterization indicates the coexistence of incompletely reduced regions, with five-coordinate Ni centers due to the introduction of oxide anions between the NiO2 3- sheets, giving samples with a refined stoichiometry of LaNiO(2.025(3)). Neutron powder diffraction and magnetization measurements indicate that the lamellar Ni(I) phase does not show the long-range antiferromagnetic ordering characteristic of isoelectronic Cu(II) oxides. This may be due either to the influence of the interlamellar oxide defect regions or to the reduced covalent mixing of Ni 3d and O 2p levels.

Item Type: Article
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - J. Am. Chem. Soc. [Field not mapped to EPrints] AD - Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, United Kingdom [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: oxide, sodium hydride, unclassified drug, article, chemical reaction, covalent bond, nuclear magnetic resonance imaging, reduction, stoichiometry, synthesis, X ray powder diffraction
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 21 Oct 2015 13:57 UTC
Last Modified: 21 Jan 2016 11:15 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/51150 (The current URI for this page, for reference purposes)
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