Merck

An unprecedented Fe(36) phosphonate cage.

Inorganic chemistry (2013-01-29)
Christine M Beavers, Andrey V Prosvirin, Andrey V Prosverin, John D Cashion, Kim R Dunbar, Anne F Richards
ABSTRACT

The reaction of 2-pyridylphosphonic acid (LH(2)) with iron(II) perchlorate and iron(III) nitrate afforded an interconnected, double-layered, cationic iron cage, [{Fe(36)L(44)(H(2)O)(48)}](20+) (1a), the largest interconnected, polynuclear ferric cage reported to date. Magnetic studies on 1a revealed antiferromagnetic coupling between the spins on adjacent Fe(III) ions.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Perchloric acid, puriss. p.a., ACS reagent, packed in coated, shock- and leak-protected glass bottle, ≥60% (T)
Sigma-Aldrich
Perchloric acid, ACS reagent, 70%
Sigma-Aldrich
Perchloric acid, ACS reagent, 60%
Sigma-Aldrich
Perchloric acid, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., 70.0-72.0%
Sigma-Aldrich
Perchloric acid, 70%, 99.999% trace metals basis
Sigma-Aldrich
Iron(III) nitrate nonahydrate, BioReagent, suitable for cell culture
Sigma-Aldrich
Iron(III) nitrate nonahydrate, ≥99.95% trace metals basis
Supelco
Iron standard for AAS, analytical standard, 10.00 g/L Fe in nitric acid, traceable to BAM
Sigma-Aldrich
Iron(III) nitrate nonahydrate, ≥99.999% trace metals basis
Supelco
Perchloric acid concentrate, 0.01 M HClO4 in water (0.01N), eluent concentrate for IC
Sigma-Aldrich
Iron(III) nitrate nonahydrate, ACS reagent, ≥98%