Structural and compositional tuning of layered subnitrides; New complex nitride halides

Michael A. Brogan, Robert W. Hughes, Ronald I. Smith, Duncan H. Gregory

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

New quaternary bimetallic nitride halides and the first examples of quintinary nitride mixed halides have been synthesised in the phase system Ca - Sr - N - Cl - Br. The variation in structure with composition has been investigated by powder X-ray and powder neutron diffraction techniques. All compounds crystallise in the R-3m spacegroup, with the anti-α-NaFeO 2 structure. The layered compounds exhibit unprecedented coexistent disorder of both cations and anions in which only nitride solely occupies a discrete crystallographic position. [N(Ca,Sr)2]+ layers alternate with halide ions (Cl, Br)-, which fill the octahedral voids between the positively charged sheets. A dual cationic-anionic substitution approach allows all aspects of the anisotropic structure to be controlled, including the thickness of the ionic layers and the [N(Ca,Sr)2] + interlayer spacing.

Original languageEnglish
Pages (from-to)7153-7158
Number of pages6
JournalDalton Transactions
Volume39
Issue number30
DOIs
Publication statusPublished - Aug 14 2010

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry

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