Anion-templated self-assembly of highly stable Fe(II) pentagonal metallacycles with short anion-π contacts

Ian D Giles; Helen T Chifotides; Michael Shatruk; Kim R Dunbar

doi:10.1039/c1cc15868f

Anion-templated self-assembly of highly stable Fe(II) pentagonal metallacycles with short anion-π contacts

Chem Commun (Camb). 2011 Dec 21;47(47):12604-6. doi: 10.1039/c1cc15868f. Epub 2011 Nov 3.

Authors

Ian D Giles¹, Helen T Chifotides, Michael Shatruk, Kim R Dunbar

Affiliation

¹ Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, USA.

PMID: 22051855
DOI: 10.1039/c1cc15868f

Abstract

The crystal structures of the self-assembled metallapentacycles [{Fe(5)(bptz)(5)(CH(3)CN)(10)} ⊂ 2SbF(6)][SbF(6)](8) (1) and [{Fe(5)(bmtz)(5)(CH(3)CN)(10)} ⊂ SbF(6)][SbF(6)](9) (2) with the π-acidic ligands bptz (3,6-bis(2-pyridyl)-1,2,4,5-tetrazine) and bmtz (3,6-bis(2-pyrimidyl)-1,2,4,5-tetrazine), respectively, revealed cationic pentagons templated by [SbF(6)](-) ions. The short anion-π contacts established between the anions and the tetrazine rings play an important role in the stability of the pentagons.