Copper multiple resonance

Metastable species derived from (L)Cu(02), where L- = 2,4-di-te/V-butyl-phenolate linked to l,4-di-z, so-propyl-l,4,7-triazacyclononane, show multiple vCuO bands in the wavenumber range 500-550 cm-1.389 The resonance Raman spectrum of [Cu2(p-0)2(flf4-Me2-etpy)2]2+ has a vCu-O-Cu band at 579 cm-1 (551 cm-1 for lsO).390 Selective catalytic reduction of NO by NH3/02 on copper-faujasite catalysts gave rise to IR bands showing changes in copper oxidation states (using the vas[Cu-0-Cu]+ band near 900 cm-1).391... 

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