Abstract

The osmium nitride complex [Os VI(NH 3) 4N] 3+ undergoes a one-electron reduction in acetonitrile to give [Os V(N)(NH 3) 4] 2+, which further reacts by nitride coupling to give the μ-dinitrogen osmium complex [(CH 3CN)(NH 3) 4Os II(N 2)Os II(NH 3) 4(CH 3CN)] 4+. The formation of the μ-dinitrogen osmium complex is promoted by the presence of perchlorate anion, which causes the deposition of [(CH 3CN)(NH 3) 4Os II(N 2)Os II(NH 3) 4(CH 3CN)](ClO 4) 4 on the electrode surface upon repetitive voltammetric scans.

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