Kaydı eposta ile gönder: Crystal structure and fluorescence study of (μ-N-[(3,5-dimethyl-1H-pyrrol-2-yl)methyl­idene]-N-{4-[(3,5-dimethyl-1H-pyrrol-2-yl)methyl­idene­aza­nium­yl]phen­yl}aza­nium)bis­[di­fluorido­boron(IV)]