Text this: [Pt2(μ-S)2(PPh3)4] as a metalloligand toward main-group Lewis acids. Crystal structures of two complex adducts of lead nitrate, [(PPh3)4Pt2(μ3-S) 2Pb(NO3)2] and (PPh3)4Pt2(μ3-S) 2Pb(NO3)PF6

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