Platinum complexes of stanna-closo-dodecaborate

The platinum(II)chlorides cis-L2PtCl2 (LPPh3, PEt3), (dppe)PtCl2, trans(Ph3P)2Pt(Cl)Ph, (dppe)Pt(Cl)Me and (dppe)Pt(Cl)Ph were treated with [Bu3MeN]2[SnB11H11] (1) to give the air and moisture inert stannaborate substituted complexes [Bu3MeN]2[trans-L2Pt(SnB11H11)2] (2: LPPh3, 3: LPEt3), [Bu3MeN]2[(dppe)Pt(SnB11H11)2] (4), [Bu3MeN][trans-(Ph3P)2Pt(SnB11H11)Ph] (8), [Bu3MeN][(dppe)Pt(SnB11H11)Me] (9) and [Bu3MeN][(dppe)Pt(SnB11H11)Ph] (10). The nearly square planar coordination at the transition metal centre in the anion of 8 was confirmed by X-ray crystal structure analysis. (dppe)PtCl2 reacts with one equivalent of 1 to give a 1:1 mixture of 4 and (dppe)PtCl2. Reaction of 9 and 10 with one equivalent of HCl resulted not in the isolation of the monochloride [(dppe)Pt(SnB11H11)Cl]− (A), instead the 1:1 mixture between was 4 and (dppe)PtCl2 isolated. From the reaction of [(triphos)PtCl][BF4] and 1 a zwitterionic platinum complex (triphos)Pt(SnB11H11) (11) was isolated.