When an acetonitrilesolution containingNi(bpy)3 2+ (bpy -2,2′-bipyridine) Methylamine, and CO2 is irradiated at 313 nm, CO is produced with a quantum yield of -0.1% (defined as CO produced/photons absorbed). Flash photolysis, electrochemistry, and pulse radiolysis experiments provide evidence for the formation ofNi'(bpy)2 +, as an intermediate, in the photochemical Nl(bpy)32+-triethylamine-CO2 system. Although Ni°(bpy)2does react with CO2, Nil(bpy)2 + seems unreactive toward CO2 addition. The X-ray structure of (Ni3(bpy)6)(ClO4), which crystallizes as blue-violet needles, reveals the existence of a dimer in the solid. UV-vis spectra also indicate that reduced Ni(bpy)32+ solutions contain Nil(bpy)2 +, [Ni(bpy)2]2, and [Ni(bpy)2]2 complexes in equilibrium.
|Number of pages||14|
|Journal||Advances in Chemistry Series|
|Publication status||Published - 1998|
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