D. Imhof et al., SYNTHESIS OF SOME TETRAHEDRAL MIXED-METAL PLATINUM GOLD CLUSTERS AND THE X-RAY CRYSTAL-STRUCTURE OF (PCY3)()PT3(MU-CNXYL)2(MU-CO)(CNXYL)(PCY3)2)][PF6], Inorganic chemistry, 32(23), 1993, pp. 5206-5211
The cluster compounds [Pt3(mu-CNXyl)2(mu-CO)(CNXyl)(PCy3)2] (1) and [P
t3(mu-CNXyl)3(CNXyl)2(PCy3)] (2) (Cy = C6H11, Xyl = C8H9) react with 1
equiv of [Au(PCY3)][PF6] to give PCy3)}{Pt3(mu-CNXyl)2(mu-CO)-(CNXyl)
(PCy3)2}][PF6] (3) and [{Au(PCy3)}{Pt3(mu-CNXyl)3(CNXyl)2(PCy3)}][PF6]
(4), respectively. IR and multinuclear NMR data are given for 3 and 4
and related compounds. The X-ray crystal structure is given for compo
und 3, which crystallizes in the monoclinic space group P2(1)/m with Z
= 2, a = 14.988(13) angstrom, b = 18.917(10) angstrom, c = 19.28(2) a
ngstrom, and beta = 67.57(6)degrees. The structure was refined to R =
0.0682 for the 3068 observed reflections (I greater-than-or-equal-to 3
sigma(I)).