Synthesis of and evidence for electronic communication within heteromultimetallic tetrakis(NCN-pincer metal)-(metallo)porphyrin hybrids.
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.
Suijkerbuijk
Bart M J M
BM
Organic Chemistry & Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.
Tooke
Duncan M
DM
Lutz
Martin
M
Spek
Anthony L
AL
Jenneskens
Leonardus W
LW
van Koten
Gerard
G
Klein Gebbink
Robertus J M
RJ
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
D008024:Ligands; D008665:Metalloporphyrins; D008670:Metals