Three lanthanide complexes with mixed salicylate and 1,10-phenanthroline: syntheses, crystal structures, and luminescent/magnetic properties

<p>Three new lanthanide complexes incorporating salicylate (H<b>SA</b> or <b>SA</b>) and 1,10-phenanthroline (phen), Ln₃(H<b>SA</b>)₅(<b>SA</b>)₂(phen)₃ [Ln = Ho (<b>1</b>) and Er (<b>2</b>)], and Sm₂(H<b>SA</b>)₂(<b>SA</b>)₂(phen)₃ (<b>3</b>), have been synthesized. X-ray structural analysis reveals that <b>1</b> and <b>2</b> are isostructural with a trinuclear pattern, and <b>3</b> exhibits a binuclear structure. Comparison of the structural differences between <b>1</b>/<b>2</b> and <b>3</b> suggests that the identity of metal plays an important role in construction of such complexes. The magnetic properties of <b>1</b> are discussed. Moreover, <b>2</b> and <b>3</b> are both photoluminescent materials, and their emission properties are closely related to their corresponding Ln^III centers.</p