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Cyanide‐Bridged Tetranuclear RE III 2 Fe III 2 ( RE = Y, Tb, Dy) Molecular Squares with 2, 2′:6′,2′′‐Terpyridine as a Capping Ligand
Author(s) -
Zhou Hu,
Yu DengYong,
Zhou HongBo,
Yuan AiHua
Publication year - 2015
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.201400555
Subject(s) - cyanide , crystallography , chemistry , ligand (biochemistry) , supramolecular chemistry , single crystal , hydrogen bond , magnetic susceptibility , crystal structure , inorganic chemistry , molecule , biochemistry , receptor , organic chemistry
Self‐assembly reaction between hydrated rare‐earth ( RE ) nitrates RE (NO 3 ) 3 · 6H 2 O with K 3 Fe(CN) 6 in H 2 O/DMF solution by employing the tridentate ligand 2, 2′:6′,2′′‐terpyridine (terpy) as a capping ligand has yielded three cyanide‐bridged compounds [ RE (terpy)(DMF)(H 2 O) 2 ][Fe(CN) 6 ] · 6H 2 O [ RE = Y ( 1 ), Tb ( 2 ), Dy ( 3 )]. FT‐IR spectra confirmed the presence of terpy ligands and cyanide groups in compounds 1 – 3 . Single‐crystal X‐ray structural analysis indicated that these compounds are isomorphous and adopt neutral [ RE 2 Fe 2 ] molecular squares, which are further linked through hydrogen bonding interactions to generate a three‐dimensional supramolecular network. Magnetic susceptibility measurements revealed that significant single ion magnetic anisotropy dominates the properties of these compounds.