Scheme 1. (a) Synthesis of [brphtmeimbH3](PF6)2, [Fe(brphtmeimb)2]PF6, [meophtmeimbH3](PF6)2, and [Fe(meophtmeimb)2]PF6; (b) Synthesis of [Fe(coohphtmeimb)2]PF6.
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