Solvothermal Synthesis, Crystal Structure, and Luminescent Properties of Three Heterometallic Lanthanide‐Transition‐Metal Frameworks Constructed from Three Types of CuBr Motifs. Issue 15 (17th July 2017)

• Record Type: Journal Article
• Authors: Chen, Lu; Liu, Ying; Lou, Ding; Wei, Chengde; Xu, Yan
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 643:Issue 15(2017)
• Page Start: 1004
• Page End: 1010
• Publication Date: 2017-07-17
• Subjects: 3d‐4f Heterometallic compound -- Lanthanides -- Luminescence -- CuBr motif; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201700168
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract : Three three‐dimensional (3D) heterometallic lanthanide‐transition‐metal (hetero‐ Ln ‐TM) compounds with the formula [ Ln 6 (Cu4 Br3 )(Cu2 Br2 )2 (Cu2 Br)(IN)20 (H2 O)12 ]· 2H2 O [ Ln = Gd (1 ), Ln = Sm (2 ), Ln = Eu (3 )] based on the linkages of one‐dimensional Ln organic chain and Cu m Br n units were synthesized by mixing Ln 2 O3 with isonicotinic acid (HIN = pyridine‐4‐carboxylic acid) under hydrothermal condition. During the synthesis, two ligands were used: the isonicotinate (IN – ) stabilizes the cluster and links the one‐dimensional Ln organic chains and Cu m Br n motif, whereas Br – anions play a very important role in the formation of the distinct Cu m Br n units. It is interesting that there are three different Cu‐Br motifs: a closed four‐membered ring [Cu2 Br2 ] subunit, a linear [Cu2 Br] subunit, an S‐sharp [Cu4 Br3 ] subunit. Strong fluorescence of compounds2 and3 suggests an efficient energy transfer from the ligand to Eu 3+ ions. The luminescent investigation indicates that2 and3 are excellent candidates for fluorescent materials. Abstract :