(Cyclopentadienyl)nitrosyl nickel .pi.-Cyclopentadienylnitrosylnickel 12071-73-7 Cyclopentadieneylnickel nitrosyl NSC203019 Nickel(I), cyclopentadienylnitrosyl- Nickel(I), nitrosylcyclopentadienyl- Nickel, (.eta.5-2,4-cyclopentadien-1-yl)nitrosyl- Nickel, .pi.-cyclopentadienylnitrosyl-