pH-Dependent Self-Assembly of Ladder-Like Lanthanide Chains with Copper(I) Halide Clusters

• Published in: ChemPlusChem (Weinheim, Germany) Vol. 81; no. 8; pp. 792 - 797
• Main Authors: Liu, Jin-Ying, Fang, Wei-Hui, Yang, Guo-Yu
• Format: Journal Article
• Language: English
• Published: Germany Blackwell Publishing Ltd 01.08.2016
• Subjects: Acids; Chemistry; coordination polymers; Crystal structure; heterometallic complexes; hydrothermal syntheses; lanthanides; Ligands; luminescence; coordination polymers; hydrothermal syntheses; heterometallic complexes; luminescence; lanthanides
• ISSN: 2192-6506; 2192-6506
• DOI: 10.1002/cplu.201600135

Through adjustment of the pH value of the reaction system, two series of 3 D lanthanide(III)‐copper(I) coordination polymers, namely [Ln2(na)7Cu6Br5(H2O)2] [Ln=La (1), Ce (2), Pr (3), Nd (4), Sm (5), Eu (6), Gd (7), Tb (8)] and [La2(na)7Cu3Br2(H2O)2]⋅H2O (9) (na−=nicotinate), are synthesized hydrothermally and characterized fully. It is worth nothing that these two series of heterometallic compounds are constructed from similar ladder‐like Ln–organic chains, but different copper(I) halide clusters. The luminescence properties of the compounds with Nd (4), Eu (6), and Tb (8) are also investigated. Structure control: The variation in the pH of a reaction mixture leads to the distinct assembly of related ladder‐like Ln–organic chains with cuprous bromide clusters (see figure). This study provides a facile synthetic strategy for the construction of 3d–4f heterometallic coordination complexes