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The emission colors (<jats:italic>\u03bb<\/jats:italic><jats:sub>em<\/jats:sub> values from 550 to 880\u2005nm) and intensities (\u03a6<jats:sub>em<\/jats:sub> reaching 0.75) are defined by the composition and substitution geometry of the central conjugated chromophore motif, and the anion\u2010\u03c0 interactions. Time\u2010resolved and variable\u2010temperature luminescence studies suggest phosphorescence for all the titled compounds, which demonstrate observed lifetimes of 0.46\u201392.23\u2005\u03bcs at 297\u2005K. Radiative rate constants <jats:italic>k<\/jats:italic><jats:sub>r<\/jats:sub> as high as 2.8\u00d710<jats:sup>5<\/jats:sup>\u2005s<jats:sup>\u22121<\/jats:sup> deduced for salts <jats:bold>1<\/jats:bold>\u2013<jats:bold>3<\/jats:bold> were assigned to strong spin\u2010orbit coupling enhanced by an external heavy atom effect arising from the anion\u2010\u03c0 charge\u2010transfer character of the triplet excited state. 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