Magnetism of linear [Ln3](9+) oxo-bridged clusters (Ln = Pr, Nd) supported inside a [R3PR'](+) phosphonium coordination material

Nolan W Waggoner; Beau Saccoccia; Ilich A Ibarra; Vincent M Lynch; Paul T Wood; Simon M Humphrey

doi:10.1021/ic5023642

Magnetism of linear [Ln3](9+) oxo-bridged clusters (Ln = Pr, Nd) supported inside a [R3PR'](+) phosphonium coordination material

Inorg Chem. 2014 Dec 15;53(24):12674-6. doi: 10.1021/ic5023642. Epub 2014 Dec 3.

Authors

Nolan W Waggoner¹, Beau Saccoccia, Ilich A Ibarra, Vincent M Lynch, Paul T Wood, Simon M Humphrey

Affiliation

¹ Department of Chemistry, University of Texas at Austin , Welch Hall 2.204, 105 E. 24th Street A5300, Austin, Texas 78712-1224, United States.

PMID: 25469878
DOI: 10.1021/ic5023642

Abstract

Two new isostructural phosphine coordination materials, Ln-PCM-21 (Ln = Pr, Nd), have been obtained using a tris(p-carboxylated) methyltriphenylphosphonium ligand that is formally dianionic when triply deprotonated, allowing access to materials based on uncommon metal-to-ligand ratios. The polymers of the formula [Ln3(mptbc)4]X·solv (X = Cl(-), NO3(-)) are cationic and contain unusual, linear oxo-bridged [Ln3](9+) clusters. Magnetic susceptibility data for both the Pr and Nd analogues has been compared to models based on three contrasting approaches.