title: Post-assembly modification of kinetically metastable Fe(II)2L3 triple helicates.
abstract: We report the covalent post-assembly modification of kinetically metastable amine-bearing Fe(II)2L3 triple helicates via acylation and azidation. Covalent modification of the metastable helicates prevented their reorganization to the thermodynamically favored Fe(II)4L4 tetrahedral cages, thus trapping the system at the non-equilibrium helicate structure. This functionalization strategy also conveniently provides access to a higher-order tris(porphyrinatoruthenium)-helicate complex that would be difficult to prepare by de novo ligand synthesis.
authors.affiliation: Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom.
authors.forename: Derrick A
authors.initials: DA
authors.lastname: Roberts
authors.forename: Ana M
authors.initials: AM
authors.lastname: Castilla
authors.forename: Tanya K
authors.initials: TK
authors.lastname: Ronson
authors.forename: Jonathan R
authors.initials: JR
authors.lastname: Nitschke