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The crystal structures of bis-{3,5-di-fluoro-2-[4-(2,4,6-tri-methyl-phen-yl)pyridin-2-yl]phenyl-κ 2  N , C  1 }(picolinato-κ 2  N , O )iridium(III), [Ir(C 20 H 16 F 2 N) 2 (C 6 H 4 NO 2 )], 1 , and bis-[2-(4- tert -butyl-pyridin-2-yl)-3,5-di-fluoro-phenyl-κ 2  N , C  1 ](picolinato-κ 2  N , O )iridium(III), [Ir(C 15 H 14 F 2 N) 2 (C 6 H 4 NO 2 )], 2 , are presented herein. These phospho-rescent cyclo-metallated iridium(III) compounds have been structurally investigated in order to better understand the nature of their blue-shifted emssions while maintaining high quantum yields. Compound 1 exhibits substantial twisting of the mesitylene rings out of the plane of the attached pyridine ring, with dihedral angles of 67.0 (1) and 78.7 (1)° between the best mean planes. For both compounds, the contribution of disordered solvent mol-ecule(s) was removed using the SQUEEZE [Spek (2015 ▸). Acta Cryst. C 71 , 9-18] routine in PLATON [Spek (2015 ▸). Acta Cryst. C 71 , 9-18]. These solvent mol-ecules are not considered in the given chemical formula and other crystal data.

acta crystallographica. section e, crystallographic communications

The crystal structure of bis{3,5-difluoro-2-[4-(2,4,6-trimethylphenyl)pyridin-2-yl]phenyl}(picolinato)iridium(III) and its 4-<i>tert</i>-butylpyridin-2-yl analogue

The crystal structure of bis{3,5-difluoro-2-[4-(2,4,6-trimethylphenyl)pyridin-2-yl]phenyl}(picolinato)iridium(III) and its 4-tert-butylpyridin-2-yl analogue