1. Synthesis, spectroscopic and crystallographic analysis of the Zn-complex of a di(β,β′-sulfoleno)pyrrin: model for Zn-complexes of bilirubin and of phylloxanthobilins
- Author
-
Yaqing Feng, Chengjie Li, Bernhard Kräutler, and Klaus Wurst
- Subjects
chemistry.chemical_classification ,Original Paper ,Denticity ,Chemistry(all) ,010405 organic chemistry ,Chemistry ,Ligand ,Crystal structure ,General Chemistry ,010402 general chemistry ,01 natural sciences ,Fluorescence ,Fluorescence spectroscopy ,0104 chemical sciences ,Coordination complex ,Coordination chemistry ,Metal ,Dipyrrin ,Crystallography ,Zn-complex ,visual_art ,Mass spectrum ,visual_art.visual_art_medium - Abstract
A high yield preparation, spectroscopic and crystallographic investigation of the crystalline Zn-complex of a di(β,β′-sulfoleno)pyrrin are reported here. In the brightly green fluorescent Zn-complex of the hardly luminescent di(β,β′-sulfoleno)pyrrin, the metal ion is bound by two di(β,β′-sulfoleno)pyrrin ligands, as revealed first by its mass spectra. The crystal structure of this Zn-complex of the di(β,β′-sulfoleno)pyrrin confirmed a regular 2:1 composition of the bidentate di(β,β′-sulfoleno)pyrrin ligand and the metal ion. The latter was coordinated in a distorted tetrahedral fashion, as found in other dipyrrin Zn-complexes. The here studied Zn-complex of a designed di(β,β′-sulfoleno)pyrrin ligand provides insights into the coordination properties of the proposed (2:1)- and (2:2)-complexes of phylloxanthobilin and bilirubin, respectively, which are two abundant natural bilin-type tetrapyrroles. Graphical abstract
- Published
- 2016