title: Synthesis of and evidence for electronic communication within heteromultimetallic tetrakis(NCN-pincer metal)-(metallo)porphyrin hybrids.
abstract: Several heteromultimetallic pincer-porphyrin hybrids have been prepared in excellent yields by stepwise metalation of a general precursor, [2H(Br(NCN))(4)], which was designed in such a way so as to guarantee selectivity for either the porphyrin or pincer sites during the metalation steps. First, a metal was introduced in the porphyrin cavity using a metal(II) salt, followed by metalation of the pincer units through oxidative addition to an appropriate metal(0) complex. The resulting multimetallic complexes show an appreciable amount of intramolecular communication between the meso-pincer metal groups and the central metalloporphyrin component. This was manifested in changes of the optical and ligand-binding properties of the metalloporphyrin part upon reactions at the peripheral pincer sites.
authors.affiliation: Organic Chemistry & Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.
authors.forename: Bart M J M
authors.initials: BM
authors.lastname: Suijkerbuijk
authors.forename: Duncan M
authors.initials: DM
authors.lastname: Tooke
authors.forename: Martin
authors.initials: M
authors.lastname: Lutz
authors.forename: Anthony L
authors.initials: AL
authors.lastname: Spek
authors.forename: Leonardus W
authors.initials: LW
authors.lastname: Jenneskens
authors.forename: Gerard
authors.initials: G
authors.lastname: van Koten
authors.forename: Robertus J M
authors.initials: RJ
authors.lastname: Klein Gebbink
mesh_terms: D002384:Catalysis; D002678:Chimera; D018360:Crystallography, X-Ray; D004563:Electrochemistry; D004581:Electronics; D008024:Ligands; D008665:Metalloporphyrins / Q000138:chemical synthesis* / Q000737:chemistry; D008670:Metals / Q000737:chemistry*; D015394:Molecular Structure; D010084:Oxidation-Reduction
chemical_list: D008024:Ligands; D008665:Metalloporphyrins; D008670:Metals