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EnglishThe supramolecular complexes {[Mn2(HSsal)2(dpyo)3(H2O)6]2(H2O)} (1) and {[Mn(4,40-bipy)(H2O)4] (HSsal)(H2O)}n (2) [dpyo = 4,40-dipyridyl N,N0-dioxide; 4,40-bipy = 4,40-bipyridine and HSsal = 5-sulfosalicylate dianion] have been synthesized and structurally characterized. Complex 1 is a rare Mn dinuclear species realized with bridging dpyo and coordinated HSsal ligands to form a 3D architecture through H-bonding and p p interactions. In complex 2, Mn(H2O)4 fragments are bridged by 4,40-bipy, giving rise to a 1D chain. The adjoining chains encapsulate HSsal anions to give a 3D structure through a R2 2 (12) H-bonding synthon and p p interactions. The complexes were tested in association with several aromatic compounds, since they exhibit intense fluorescence (kex = 223 nm, kem = 308, 325, 353 and 393 nm for 1; kex = 237 nm, kem = 312, 335, 348 and 394 nm for 2). The outcome of DFT calculations on model compounds is discussed and compared with the experimental X-ray structural data.
| Titolo: | 3D supramolecular networks of Mn(II)-5-sulfosalicylate assembled with 4,4′-dipyridyl N,N′-dioxide and 4,4′-dipyridyl: Structure, photoluminescence and DFT calculations |
| Autori: | |
| Data di pubblicazione: | 2015 |
| Rivista: | |
| Abstract: | The supramolecular complexes {[Mn2(HSsal)2(dpyo)3(H2O)6]2(H2O)} (1) and {[Mn(4,40-bipy)(H2O)4] (HSsal)(H2O)}n (2) [dpyo = 4,40-dipyridyl N,N0-dioxide; 4,40-bipy = 4,40-bipyridine and HSsal = 5-sulfosalicylate dianion] have been synthesized and structurally characterized. Complex 1 is a rare Mn dinuclear species realized with bridging dpyo and coordinated HSsal ligands to form a 3D architecture through H-bonding and p p interactions. In complex 2, Mn(H2O)4 fragments are bridged by 4,40-bipy, giving rise to a 1D chain. The adjoining chains encapsulate HSsal anions to give a 3D structure through a R2 2 (12) H-bonding synthon and p p interactions. The complexes were tested in association with several aromatic compounds, since they exhibit intense fluorescence (kex = 223 nm, kem = 308, 325, 353 and 393 nm for 1; kex = 237 nm, kem = 312, 335, 348 and 394 nm for 2). The outcome of DFT calculations on model compounds is discussed and compared with the experimental X-ray structural data. |
| Handle: | http://hdl.handle.net/11368/2868086 |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.poly.2015.01.021 |
| URL: | http://www.journals.elsevier.com/polyhedron/ |
| Appare nelle tipologie: | 1.1 Articolo in Rivista |
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http://hdl.handle.net/11368/2868086
