Metallo‐Polymerization/‐Cyclization of a C 16 ‐Bridged Di‐Terpyridine Ligand and Iron( II ) Ions | Zendy

Andres Philip R. | Zendy; Schubert Ulrich S. | Zendy

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Metallo‐Polymerization/‐Cyclization of a C 16 ‐Bridged Di‐Terpyridine Ligand and Iron( II ) Ions

Author(s) -

Andres Philip R.,

Schubert Ulrich S.

Publication year - 2004

Publication title -

macromolecular rapid communications

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.348

H-Index - 154

eISSN - 1521-3927

pISSN - 1022-1336

DOI - 10.1002/marc.200400177

Subject(s) - terpyridine , chemistry , polymerization , polymer chemistry , ligand (biochemistry) , homoleptic , monomer , intermolecular force , polymer , metal , organic chemistry , molecule , biochemistry , receptor

Summary: The coordinative polymerization/cyclization of a flexible monodisperse di‐terpyridine ligand with iron( II ) chloride is reported. Matrix‐assisted laser desorption ionization time‐of‐flight (MALDI‐TOF) investigations showed the preferred formation of a [2 + 2] macrocycle, but also larger aggregates (cycles or linear oligomers) with up to 10 monomer units were found. Because of its C 16 ‐spacer, the solubility is sufficient for performing viscosity experiments in CHCl 3 /MeOH solution. A viscosity titration revealed a maximum in viscosity at the 1‐to‐1 ratio of iron( II ) ions to di‐terpyridine‐ligands, which indicates the formation of extended oligomers, polymers, catenanes and/or cycles at that ratio.Schematic representation of intra‐ and intermolecular metallo‐macrocycles.

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