Diaquabis[N-(1-naphthyl)-N-nitrosohydroxylaminato-O,O']cobalt(II)

In the title compound, [Co(C₁₀H₇O₂N₂)₂(H₂O)₂], prepared from neocupferron and (NH₄)₂[Co(SO₄)₂(H₂O)₆], the Co^II ion has slightly distorted octahedral coordination defined by six O atoms from the two bidentate ligands and the two water molecules, in the cis form [Co-O = 2.073 (2)-2.124 (3) Å]. The molecule has crystallographic C₂ symmetry. The plane of the nitrosohydroxylaminato group is twisted out of the plane of the naphthyl ring.

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