Alkali metal complexes of an enantiopure iminophosphonamide ligand with bright delayed fluorescence.

ABSTRACT: The enantiomerically pure ligand P,P-diphenyl-N,N'-bis((R)-1-phenylethyl)phosphinimidic amide (1; (R)-HPEPIA) was synthesized and subsequently deprotonated with alkali metal precursors to yield dimeric complexes [M₂{(R)-PEPIA}₂] (M = Li (2), Na (3), K (4), Rb (5)). The cesium compound [M{(R)-PEPIA}] (6) crystallized as a cocrystal composed of dimeric ([Cs₂{(R)-PEPIA}₂] (6_d ) and 1D-polymeric ([Cs{(R)-PEPIA}] _n ) (6_p ) species in a 1 : 1 ratio. The coordination polymer 6_p features a unique sinus-shaped configuration of repeating -Cs-N-P-N-Cs-N-P-N- units. Unusual photoluminescence (PL) properties were

SUBMITTER: Feuerstein TJ 

PROVIDER: S-EPMC6510313 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature