Determining the site of reduction of 4-NO2-2,2'-bipyridine and [Pt(4-NO2-2,2'-bipyridine)Cl2]

Paul Murray, Lorna Jack, Eric J L McInnes, Lesley J Yellowlees

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


In situ UV/Vis and EPR spectroelectrochemistry experiments show that the unpaired electron in [4-NO(2)-bpy](1-) sits in an orbital which is based on the 4-NO(2)-py moiety and not spread over both py rings. The unpaired electron in [Pt(4-NO(2)-bpy)Cl(2)](1-) is based on the 4-NO(2)-bpy ligand with some [bpy](1-) character. Labelling the NO(2) group of 4-NO(2)-bpy with (15)N revealed that the larger coupling constant in the EPR spectrum of [4-NO(2)-bpy](1-) can be assigned to the N atom of the NO(2) group. This coupling constant is significantly smaller in the EPR spectrum of [Pt(4-NO(2)-bpy)Cl(2)](1-).
Original languageEnglish
Pages (from-to)4179-85
Number of pages7
JournalDalton Transactions
Issue number17
Publication statusPublished - 2010


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