Bis(2,6-dinitroaryl)platinum Complexes. 2. Di- and Trinuclear Complexes Containing Pt−Hg Bonds

[Hg(O2CR)2] reacts with an equimolar amount of cis-Me4N[Pt(κ2-Ar)(κ1-Ar)Cl] (1) [κ2-Ar =
C6(NO2)2-2,6-(OMe)3-3,4,5-κ2-C,O; κ1-Ar = C6(NO2)2-2,6-(OMe)3-3,4,5-κ1-C] or with cis-[Pt(κ2-Ar)(κ1-Ar)(OH2)] (2) in a 2:1 molar ratio to give Me4N[Hg(μ-OAc)2{Pt(κ1-Ar)2Cl}] (5) or,
depending on R, [Hg(μ-OAc)2{Pt(κ2-Ar)2}2] (6) or [Hg{Pt(κ2-Ar)2(O2CR)}2] [R = Ar (7), C6F5
(8), CF3 (9)]. Refluxing in toluene a mixture of [HgAr2] [Ar = C6(NO2)2-2,6-(OMe)3-3,4,5],
[Pt(dba)2] (dba = dibenzylideneacetone), and (i) PPh3 (1:1:2) or (ii) bpy in molar ratio 1:1.3:1.6 gave cis-[Pt(κ1-Ar){Hg(κ1-Ar)}L2] [L = PPh3 (10), L2 = bpy (11)]. Complex 10 reacts with
XyNC (Xy = C6H3Me2-2,6) to give [Pt(κ1-Ar){Hg(κ1-Ar)}(CNXy)(PPh3)] (12). The structures
of complexes 7, 9·CHCl3·CH2Cl2, and 10 have been solved by X-ray diffraction studies.