A new bimetallic Pt-Sn compound [Pt(NH3)(4)][SnCl6] has been used as precursor for the preparation of supported Pt-Sn/A/O-2(3) catalysts. A comparison of a dried sample with that prepared by coimpregnation displays different behaviour in TPR, chemisorption. The initial catalytic activity properties were checked in the reactions of cyclohexane dehydrogenation and cyclopentane ring opening, while n-hexane skeletal reactions were used to probe the quasisteady-state activity. The catalyst prepared via the Pt-Sn complex precursors exhibited somewhat lower specific activity. This fact, together with enhanced olefin formation from n-hexane was taken as an indication of lower amount of contiguous Pt atoms and some electronic interaction between Pt and Sn in that catalyst.