A second triclinic polymorph of bis­(μ-N-nitroso-N-phenyl­hydroxy­laminato)-κ(3) O,O′:O′;κ(3) O′:O,O′-bis­[(N-nitroso-N-phenyl­hydroxy­laminato-κ(2) O,O′)lead(II)]

The cupferronate ions in the centrosymmetric dinuclear title compound, [Pb(2)(C(6)H(5)N(2)O(2))(4)], O,O′-chelate to the two Pb(II) atoms; two of the four nitroso O atoms are also involved in bridging. The geometries of the five-coordinate Pb(II) atoms in the two independent mol­ecules are Ψ-octa­hedral; if more remote Pb⋯O inter­actions are also considered, the coordination number is increased to six for one mol­ecule and to seven for the other. Their coordination polyhedra are ill defined in the chain motif, which runs along [100].