1) Bruce, James I.; Chambron, Jean-Claude; Koelle, Philipp; Sauvage, Jean-Pierre; Perkin Trans. 2002, (10), 1226-1231, DOI: 10.1039/b202407c ; Synthesis of a linear bis-porphyrin with a Ru(phen)22+-complexed 2,2'-bipyridine spacer
2) Constable, Edwin C.; Redondo, Ana Hernandez; Housecroft, Catherine E.; Neuburger, Markus; Inorg. Chem. Commun. 2010, 13(1), 70-73, DOI: 10.1016/j.inoche.2009.10.019 ; Aldehyde-decorated 2,2'-bipyridine and 2,2':6',2''-terpyridine ruthenium(II) complexes: Convenient scaffolds for supramolecular chemistry