Organometallic Chemistry of Diphosphazanes. 11. Reactions of fac-[Mo(CO)3(MeCN){.eta.2-Ph2PN(Pri)PPh(DMP)}] (DMP = 3,5-Dimethyl-1-Pyrazolyl) with Diphosphazanes and Diphosphinoalkanes and Oxidative Addition with Iodine

Mixed Phosphine−Phosphine Oxide Ligands

“…Oxidation of [W(CO) 3 (I) 2 (dppfc)] with H 2 O 2 gave [W(CO) 3 (I) 2 (dppfcO-κ 2 - P,O )], in which the 1,1‘-bis(diphenylphosphino)ferrocene monoxide is P,O-bonded to the tungsten atom . Likewise, oxidation of the dangling PPh 2 group in [M(CO) 3 (dppm-κ 2 - P,P )(dppm-κ 1 - P )] (M = W 90 and Mo) with adventitious oxygen has been reported to produce P-bonded dppmO complexes [M(CO) 3 (dppm-κ 2 - P,P )(dppmO-κ 1 - P )] (M = W and Mo), both of which have been structurally characterized. , …”

Palladium(II) Cyclometalated Thiosemicarbazone Compounds: A New Class of Bidentate P,S Metallo Ligands

“…However, our preliminary results presented here show this not to be the outcome, the sulfur atom also exhibiting coordinative capacity by behaving as terdentate, thus giving rise to an unprecedented class of bidentate P,S metallo ligands , and in this work we present definitive proof of the behavior of these new cyclometalated palladium(II) compounds. Numerous examples of metallo ligands with P , or S , donor atoms are known, and among the latter, sulfur-containing macrocycles have been reported, , as well as thiolate metallo ligands , with tertiary diphosphines, whose role is limited to that of alternative terminal ligands, the donor abilities of the corresponding metallo ligand being restricted to the thiolate core. Furthermore, P,S-donor metallo ligands have also been described which comprise, among others, pendant phosphine−thiolate species − and combined thiolate− cyclopentadienylphosphine metallo ligands .…”

New main group ligands for complexation with transition and inner transition elements

“…This result is in contrast to the ready formation of a heterobimetallic complex with a bridging Ph2 P(CH2)PPh2 (dppm)ligand in the reaction of fac-or mer-Mo(CO)3(~12-dppm) (r/1-dppm) with PtC12(COD) (COD = 1,5-cyclooctadiene). These results bring out the differences in reactivity of diphosphazanes and that of diphosphanoalkanes towards transition metal derivatives (Babu et al 1993(Babu et al , 1995c.…”