Synthesis and Coordination Chemistry of the Hexadentate Ligands 1,4,7‐Tris(2‐hydroxybenzyl)‐1,4,7‐triazacyclononane (H3L1) and 1,4,7‐Tris(3‐tert.‐butyl‐2‐hydroxybenzyl)‐1,4,7‐triazacyclononane (H3L2). Crystal Structures of (HL1CuII) and (L2FeIII)acacH.