title: Synthesis and reactivity of tantalum corrole complexes.
abstract: Reaction of the free base corrole (Mes2(p-OMePh)corrole)H3with tantalum trialkyl precursors TaMe3Cl2and TaBn3NtBu resulted in the formation of the tantalum dichloride (1) and tantalum imido (4) corrole complexes via alkane elimination. The X-ray crystal structures of these two compounds have been determined and the structural parameters are discussed. The Ta centre of 1 was found to sit out of the plane of the corrole ring by 0.903 Å and is cis-ligated, similarly to what has been reported for group 4 porphyrin complexes. From complex 1 we synthesized the dimethyl derivative (2), the reactivity of which is compared to an analogous tantalum dimethyl porphyrin cation. The imido complex 4 reacted with triphenylmethanol and 4-methylbenzyl alcohol, resulting in different extents of protonation of the imido group.
authors.affiliation: Department of Chemistry, University of California, Berkeley, California 94720, USA. arnold@berkeley.edu.
authors.forename: Jessica A
authors.initials: JA
authors.lastname: Ziegler
authors.affiliation: Department of Chemistry, University of California, Berkeley, California 94720, USA. arnold@berkeley.edu.
authors.forename: Heather L
authors.initials: HL
authors.lastname: Buckley
authors.affiliation: Department of Chemistry, University of California, Berkeley, California 94720, USA. arnold@berkeley.edu.
authors.forename: John
authors.identifier: http://orcid.org/0000-0001-9671-227X
authors.initials: J
authors.lastname: Arnold