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Weak inter-or intramolecular interactions, especially when combined and integrated into appropriate molecular "architecture", can lead to the formation of supramolecular structures with specific functionality."] Here we report a system that, owing to such interactions in the solid, shows strong luminescence from a metal-to-ligand charge-transfer (MLCT) excited state.Compounds 1-3, which belong to the class of homodinuclear complexes containing the bridging ligand 2,T-bipyriml a

Eine π‐Wechselwirkung Phenyl…︁bpym…︁Phenyl sowie durch Lösungsmittelmoleküle fixierte BF ⊖4‐Gegenionen sind Ursache für die starke Lumineszenz von 1 im Festkörper. Dies folgt daraus, daß sowohl mit einer Reihe anderer Arylphosphanliganden als auch mit PF ⊖6‐ und ClO ⊖4‐Gegenionen sowie in Lösung keine oder nur eine sehr schwache Lumineszenz aus dem Metall‐Ligand‐Charge‐Transfer‐angeregten Zustand beobachtet wird.

structure structure (organic substances) K 9000 13 -052 Ultraviolet Stabilizers of the 2-(Hydroxyphenyl)benzotriazole Class. Influence of Substituents on Structure and Spectra -(X-ray analyses, absorption, IR and fluorescence spectra of 8 title compounds such as (I) substituted in the phenol substituent and 4 title compounds such as (II) substituted in both phenyl rings). -(RIEKER, J.; LEMMERT-SCHMITT, E.; GOELLER, G.; ROESSLER, M.; STUEBER, G. J.; SCHETTLER, H.; KRAMER, H. E. A.; STEZOWSKI, J. J.; HOIER, H.; HENKEL, S.; SCHMIDT, A.; PORT, H.; WIECHMANN, M.; RODY, J.; RYTZ, G.; SLONGO, M.; BIRBAUM, J.-L.; J.

A phenyl‐bipyrimidine‐phenyl‐π‐interaction together with a trapping of BF4 counterions by solvent molecules form the basis for the intense solid‐state luminescence of the title complexes (X: BF4).