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- Title
Supramolecular Frameworks Built up from Red-Phosphorescent trans-Re<sub>6</sub> Cluster Building Blocks: One Pot Synthesis, Crystal Structures, and DFT Investigations.
- Authors
El Osta, Racha; Demont, Antoine; Audebrand, Nathalie; Molard, Yann; Nguyen, Thi Thuong; Gautier, Régis; Brylev, Konstantin A.; Mironov, Youri V.; Naumov, Nikolay G.; Kitamura, Noboru; Cordier, Stéphane
- Abstract
The reaction of a K4[{Re6Si8}(OH)a6] ·8H2O rhenium cluster salt with 4,4′-bipyridine (bpy) or 4-aminopyridine (apy) in an aqueous solution at mild temperature and pressure conditions lead to cluster functionalization and to the formation of two new compounds [{Re6Si8}(OH)a2(bpy)a4] ·bpy ·4H2O ( 1) and [{Re6Si8}(OH)a2(apy)a4] ·2apy ·2H2O ( 2). Their crystal structures are built up from trans-[{Re6Si8}(OH)a2(L)a4] neutral units and the cohesions of both supramolecular frameworks are based on π-π stacking as well as hydrogen bonds, involving the cluster units trans-[{Re6Si8}(OH)a2(L)a4], interstitial L ligands and water molecules. 1 and 2 present 2D and 3D cluster frameworks, respectively. Both compounds show red-NIR luminescence in the solid states. DFT calculations demonstrate that association of face capped Re6 clusters with bpy and apy ligands enabled to form supramolecular frameworks that retain luminescent properties of the cluster units.
- Subjects
SUPRAMOLECULAR chemistry; AMINOPYRIDINES; CRYSTAL structure; RHENIUM catalysts; DENSITY functional theory; BIPYRIDINE; HYDROGEN bonding
- Publication
Zeitschrift für Anorganische und Allgemeine Chemie, 2015, Vol 641, Issue 6, p1156
- ISSN
0044-2313
- Publication type
Article
- DOI
10.1002/zaac.201500074