The compound W-2(mu-H)(mu-O2CC6H5)Br-4(mu-dppm)(2) . 2THF (1) was synthesized from W-2(mu-O2CC6H5)(4), dppm [bis(diphenylphosphino)methane], and Me(3)SiBr. The analogous reaction performed using Me(3)SiI resulted in the synthesis of W-2(mu-O2CC6H5)(2)I-2(mu-dppm)(2) . solvent (2). The structures of both 1 and 2 were determined by X-ray crystallography and the following data were obtained : 1, monoclinic P2(1)/c, No. 14, with a = 19.173(18) Angstrom, b = 15.104(9) Angstrom, c = 24.049(14) Angstrom, beta = 111.52(6)degrees, V = 6479(8) Angstrom(3), Z = 4, R1 = 0.0776, and wR(2) = 0.1333; 2, monoclinic C2/m, No. 12, with a = 16.969(4) Angstrom, b = 19.189(4) Angstrom, c 12.195(4) Angstrom, beta = 127.28(2)degrees, V = 3159.6(14) Angstrom(3), Z = 2, R1 = 0.0326, and wR(2) = 0.0657. Additional characterizations of both compounds were performed with P-31 NMR, H-1 NMR, UV-vis, and IR spectroscopy. Compound 2 and the other halide analogs can also be synthesized when ZnX(2) (X = Cl, Br, and I) is used in the place of the silanes. The chloride and bromide analogs were characterized by P-31 NMR and UV-vis spectroscopy.