Synthesis, structure and spin‐crossover transition of The Cluster Compound Nb 6 I 11−x Br x  (0 ⩽ x ⩽ 2.7) | Zendy

Yoshiasa Akira | Zendy; Borrmann Horst | Zendy; Simon Arndt | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

Synthesis, structure and spin‐crossover transition of The Cluster Compound Nb 6 I 11−x Br x (0 ⩽ x ⩽ 2.7)

Author(s) -

Yoshiasa Akira,

Borrmann Horst,

Simon Arndt

Publication year - 1994

Publication title -

zeitschrift für anorganische und allgemeine chemie

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.354

H-Index - 66

eISSN - 1521-3749

pISSN - 0044-2313

DOI - 10.1002/zaac.19946200730

Subject(s) - crystallography , spin crossover , phase transition , homogeneous , crystal structure , lattice constant , cluster (spacecraft) , lattice (music) , chemistry , materials science , condensed matter physics , thermodynamics , physics , programming language , computer science , diffraction , optics , acoustics

The homogeneous phase Nb 6 I 11−x Br x (0 ⩽ x ⩽ 2.7) is synthesized from Nb 3 Br 8 , Nb 3 I 8 and Nb in sealed Nb capsules at 1 130 K. A second‐order phase transition is found as for the composition Nb 6 I 11 itself, changing the space group from P2 1 cn (low temperatures) to Pccn, accompanied by a spin‐crossover from a doublet to a quartet state. With increasing Br content the lattice constants decrease and the transition temperature shifts from 274 to 170 K while the transition interval is broadened simultaneously. Single crystal investigations for x = 0.5 and 2.3, each at 110 and 298 K, indicate a preferred substitution of one of the bridging I positions (I6) by Br atoms.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research