Effect of Protonated Organic Cations and Anion-pi Interactions on the Magnetic Behavior of Hexabromorhenate(IV) Salts

Jose Martinez-Lillo*, Anders H. Pedersen, Juan Faus, Miguel Julve, Euan K. Brechin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Two novel Re-IV compounds of formula (Hbpym)(2)[(ReBr6)-Br-IV]center dot 4H(2)O (1) and (H(4)biim)[(ReBr6)-Br-IV]center dot 4H(2)O (2) [Hbpym(+) = 2,2'-bipyrimidinium cation and H(4)biim(2+) = 2,2'-biimidazolium dication] have been prepared and magnetostructurally characterized. 1 and 2 exhibit distinct crystal packing, and the presence of weak intermolecular contacts, such as Re-Br...B-rRe (1 and 2), Re-Br center dot center dot center dot(H2O)center dot center dot center dot BrRe (1 and 2), and Re-Br center dot center dot center dot pi center dot center dot center dot Br-Re (2), lead to different magnetic behaviors. While 1 is antiferromagnetic, 2 is a ferromagnetic compound and indeed the first example of ferromagnetic salt based on the hexabromorhenate(IV) anion. These results suggest a straightforward synthetic route to the preparation of new ferromagnetically coupled Re-IV compounds.

Original languageEnglish
Pages (from-to)2598-2601
Number of pages4
JournalCrystal Growth and Design
Volume15
Issue number6
DOIs
Publication statusPublished - Jun 2015

Keywords

  • X-RAY-STRUCTURE
  • COMPLEXES

Fingerprint

Dive into the research topics of 'Effect of Protonated Organic Cations and Anion-pi Interactions on the Magnetic Behavior of Hexabromorhenate(IV) Salts'. Together they form a unique fingerprint.

Cite this