X-ray diffraction structure of the phosphido-bridged mixed-metal cluster Fe-2(CO)(6)(mu(3)-PPh)(2)Pt(dppe)

Treatment of Fe-2(CO)(6)(mu (2)-PPhH)(2) with BuLi (2 equiv.), followed by the addition of PtCl2 (dppe), affords the phosphido-bridged cluster Fe-2(CO )(6)(mu (3)-PPh)(2)Pt(dppe). The Fe2Pt cluster was isolated and characteriz ed in solution by IR and P-31 NMR spectroscopy, and the molecular structure of Fe-2 (CO)(6)(mu (3) -PPh)(2)Pt(dppe) determined by X-ray diffraction an alysis. Fe-2(CO)(6)(mu (3)-PPh)(2)Pt(dppe) crystallizes in the orthorhombic space group P-bca, a = 17.539(3) Angstrom, b = 21.490(2) Angstrom, c = 22. 959(3) Angstrom, V = 8653.5(18) Angstrom (3), Z = 8, d(calc) = 1.670 g cm(- 3); R = 0.0644, R-w = 0.0389 for 5040 observed reflections with I > 3 sigma (I).