title: A C2-symmetric, basic Fe(III) carboxylate complex derived from a novel triptycene-based chelating carboxylate ligand.
abstract: A triptycene-based bis(benzoxazole) diacid ligand H(2)L2(Ph4) bearing sterically encumbering groups was synthesized. Treatment of H(2)L2(Ph4) with Fe(OTf)(3) afforded a C(2)-symmetric trinuclear iron(III) complex, [NaFe(3)(L2(Ph4))(2)(μ(3)-O)(μ-O(2)CCPh(3))(2)(H(2)O)(3)](OTf)(2) (8). The triiron core of this complex adopts the well known "basic iron acetate" structure where the heteroleptic carboxylates, comprising two Ph(3)CCO(2)(-) and two (L2(Ph4))(2-) ligands, donate the six carboxylate bridges. The (L2(Ph4))(2-) ligand undergoes only minor conformational changes upon formation of the complex.
authors: Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
authors: Yang
authors: Y
authors: Li
authors: Justin J
authors: JJ
authors: Wilson
authors: Loi H
authors: LH
authors: Do
authors: Ulf-Peter
authors: UP
authors: Apfel
authors: Stephen J
authors: SJ
authors: Lippard
mesh_terms: D000873:Anthracenes / Q000737:chemistry*; D001583:Benzoxazoles / Q000138:chemical synthesis*; D002264:Carboxylic Acids / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D008024:Ligands
chemical_list: D000873:Anthracenes; D001583:Benzoxazoles; D002264:Carboxylic Acids; D005290:Ferric Compounds; D008024:Ligands; C520712:triptycene