LAUSR

Three types of (diphosphine)Pd- or Pt-bridged butterfly Fe/S cluster complexes have been prepared by a simple and convenient one-pot synthetic method. The first type of such complexes involves the linear (diphosphine)Pd- or Pt-bridged double-butterfly Fe/S clusters [(μ-RS)(μ-S═CS)Fe2(CO)6]2[M(diphosphine)] (1–12; M = Pd and Pt; R = Et, t-Bu, Ph, and p-MeC6H4; diphosphine = dppe, dppv, and dppf), which were prepared by sequential reactions of monoanions [(μ-RS)(μ-CO)Fe2(CO)6]– (formed in situ from Fe3(CO)12, RSH, and Et3N) with excess CS2, followed by treatment of the resulting monoanions [(μ-RS)(μ-S═CS)Fe2(CO)6]– with (diphosphine)MCl2. The second type of complexes involves the macrocyclic (diphosphine)M-bridged double-butterfly Fe/S clusters [μ-S(CH2)4S-μ][(μ-S═CS)Fe2(CO)6]2[M(diphosphine)] (13–16; M = Pd and Pt; diphosphine = dppe and dppv), which were prepared by sequential reactions of dianion [{μ-S(CH2)4S-μ}{(μ-CO)Fe2(CO)6}2]2– (generated in situ from Fe3(CO)12, dithiol HS(CH2)4SH, and Et3N) with exc...