Transition-metal complexes containing phosphorus ligands. Part III. Convenient syntheses of some triphenylphosphine complexes of the platinum metals

Reactions of sodium tetrahydroborate and cyanotrihydroborate with ruthenium(II) and (III) systems in the presence of tertiary phosphines

“…Hydrido complexes, such as RuH,(PPh,), (8), RuH,(PPh,), (8), and RuH,-(PPh,), (10) Thus, from our observations, the action of NaBH, on Ru(I1) complexes in the presence of PPh, seems to proceed according to Scheme 1. NaBH,…”

“…As mentioned in the introduction, no tetrahydroborato complex of ruthenium has previously been reported although the reactions of NaBH, and RuC1, in the presence of PPh, in boiling ethanol have been thoroughly investigated (8,10). Hydrido complexes, such as RuH,(PPh,), (8), RuH,(PPh,), (8), and RuH,-(PPh,), (10) Thus, from our observations, the action of NaBH, on Ru(I1) complexes in the presence of PPh, seems to proceed according to Scheme 1.…”

Novel synthesis of triblock PDMS-PS-PDMS copolymers

“…Dihydridocarbonyltris(triphenylphosphine)ruthenium (Ru) was prepared from ruthenium trichloride hydrate. 18 Cuprous iodide was purified by precipitation into deionized water of a saturated aqueous KI solution of Cu(I) iodide that had been filtered previously through a pad of decolorizing carbon. The Cu(I) iodide then was dried in a vacuum oven at 70°C /20 mm for 48 h. …”

A Detailed Investigation of the Reaction of 5,9-Diphenylbenz[a]azulene with Dialkyl Acetylenedicarboxylates Leading to Dialkyl 8,12-Diphenylbenzo[a]heptalene-6,7-dicarboxylates

“…ADiP was prepared according the method of Fischer from acetylenedicarboxylic acid. The catalysts were synthesized following the procedures of Levison and Robinson [30], and of Giordano and Crabtree [31] 1703s, 1687s, 1642s, 1614m, 1590m, 1492m, 1444m, 1361m, 1306w, 1269w, 1206m, 1185m, 1166m, 1136m, 1105m, 994m, 958w, 888w, 798m, 776m, 754w, 732s, 692m, 660w, 634m, 565m, 527w, 507w, 471w. (7)); 8.07 (m, HÀC(4)); 7.77 ± 7.71 (m, HÀC(5), HÀC(6), HÀC(2'), HÀC(6')); 7.56 ± 7.43 (m, 4 H m and 2 H p of Ph).…”