Crystal Structure of a Bis(2,2'-bipyridine)ruthenium(II) Complex of a Dimethoxynaphthalene-Norbornyl-Pyridazine Ligand

Abstract

The bis (2,2′-bipyridine)(6,11-dimethoxy-1,4-di(2′-pyridyl)-5,12-dihydro-5,12-methanonaphtho-[2,3-g] phthalazine )ruthenium(II) complex exists in two diastereomeric forms, (3a) and (3b). In order to make an unambiguous assignment of the configuration of each stereoisomer, a single-crystal X-ray structure of the hexafluorophosphate salt of the less soluble isomer (in methanol/acetone) was carried out. It was found that the structure of this material corresponded to (3a). Differences in he ¹H n.m.r. spectra of (3a) and (3b) are discussed in light of their structures.