title: Chains, necklaces and weaving chain-link grids from self-assembly reactions.
abstract: Assembly of two ditopic units, a phenanthroline substituted by 4-ethynyl pyridines at the 2-and 9-positions and a dimetallic paddlewheel, gives a linear chain polymer rather than a closed cyclic species, which would appear equally possible. The chain may be decorated by binding a copper-containing macrocycle around the phenanthroline units to form a polypseudorotaxane. When two phenanthroline ligands are assembled in a first step around copper(I), the paddlewheel acceptor can link them in a second step to form a two-dimensional interwoven grid that resembles the form of a chain-link fence. Each copper(I) centre in this structure is chiral, and the crystal shows complete homochirality, implying selection during the assembly process.
authors.affiliation: Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai Ernest Ansermet, CH 1211 Geneva 4 (Switzerland).|Departamento de Química Fundamental, Universidade da Coruña, Facultad de Ciencias, Rúa da Fraga, 10. La Coruña (Spain).
authors.forename: Cristina
authors.initials: C
authors.lastname: Alvariño
authors.affiliation: Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai Ernest Ansermet, CH 1211 Geneva 4 (Switzerland).
authors.forename: Damien
authors.initials: D
authors.lastname: Simond
authors.affiliation: Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai Ernest Ansermet, CH 1211 Geneva 4 (Switzerland).
authors.forename: Pau Moneva
authors.initials: PM
authors.lastname: Lorente
authors.affiliation: Laboratory for X-ray Crystallography, University of Geneva, 24 quai Ernest Ansermet, CH 1211 Geneva 4 (Switzerland).
authors.forename: Céline
authors.initials: C
authors.lastname: Besnard
authors.affiliation: Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai Ernest Ansermet, CH 1211 Geneva 4 (Switzerland). Alan.Williams@unige.ch.
authors.forename: Alan F
authors.initials: AF
authors.lastname: Williams
keywords: coordination polymers; copper; rotaxanes; self-assembly; topochemistry