Reactivity of trans-(CO)(3)Fe(Ph(2)Ppym)(2) toward metal reagents: Synthesis and crystal structures of [HgCl(Ph(2)Ppym)(mu-Cl)](2), trans-[(Ph(2)Ppym)(2)Rh(CO)Cl]center dot 0.5CH(2)Cl(2), [PdCl(mu-Ph(2)Ppym)](2)center dot CH2Cl2, cis-[(Ph(2)Ppym)(2)PdCl2]center dot 0.5CH(2)Cl(2) and cis-[Fe(NCS)(2){Ph2P(O)pym}(2)] (Ph(2)Ppym=2-(diphenylphosphino)pyrimidine)

The reaction of the neutral tridentate organometallic ligand trans-(CO)(3)Fe(Ph(2)Ppym)(2) with Hg-2(ClO4)(2) . xH(2)O, [(cod)RhCl](2), (cod)PdCl2, PdCl2 and Nd(SCN)(3) . xH(2)O has been studied. Five new complexes were prepared and fully characterized by single-crystal X-ray analysis: [HgCl(Ph(2)Ppym)(mu-Cl)](2) (1), space group P2(1)/n with a = 11.906(1), b = 11.263(1), c = 13.437(1) Angstrom, beta = 91.75(1)degrees and Z = 2; trans-[(Ph(2)Ppym)(2)Rh(CO)Cl]. 0.5CH(2)Cl(2) (2), space group C2/c with a = 12.009(1), b = 14.536(1), c = 19.093(1) Angstrom, beta = 90.00(1)degrees and Z = 4; [PdCl(mu-Ph(2)Ppym)](2) . CH2Cl2 (3), space group P2(1)/n with a = 12.295(1), b = 11.762(1), c = 23.919(1) Angstrom, beta = 90.00(1)degrees and Z = 4; cis-[(Ph(2)Ppym)(2)PdCl2]. 0.5CH(2)Cl(2) (4), space group P2(1)/n with a = 10.907(2), b = 18.525(4), c = 16.657(3) Angstrom, beta = 106.92(3)degrees and Z = 4; and cis-[Fe(NCS)(2)(Ph2P(O)pym)(2)] (5), space group P2(1)/c with a = 12.747(1), b = 11.051(1), c = 25.430(1) Angstrom, beta = 103.30(1)degrees and Z = 4. The results showed that (i) trans-(CO)(3)Fe(Ph(2)Ppym)(2) is a strong reductant, and (ii) the Ph(2)Ppym moiety weakly coordinates to the Fe(O) atom and can easily be transferred to another metal atom when the organoiron ligand reacts with various metal reagents.