TRANSITION-METAL CHEMISTRY OF PHOSPHORUS BASED LIGANDS - RUTHENIUM(II) CHEMISTRY OF BIS(PHOSPHINO)AMINES, X2PN(R)PX2 (R = H OR PH, X = PH, R = PH, X-2 = O2C6H4)

Reactions of CpRuCl(PPh3)(2) with bis(phosphino)amines, X2PN(R)PX2 (1 R = H, X = Ph; 2 R = X = Ph; 3 R = Ph, X-2 = O2C6H4) give neutral or c ationic mononuclear complexes depending on the reaction conditions. Re action of 1 with CpRuCl(PPh3)(2) gives one neutral complex, [CpRu(Cl)( eta(2)-Ph2PN(H)PPh2)] (4) and two cationic complexes, [CpRu(eta(2)-Ph2 PN(H)PPh2)(eta(1)-Ph2PN(H)PPh2)]Cl (5) and [CpRu(PPh3)(eta(2)-Ph2PN(H) PPh2)]Cl (6), whereas the reaction of 2 with CpRuCl(PPh3)(2) leads onl y to the isolation of cationic complex, [CpRu(PPh3)(eta(2)-Ph2PN(Ph)PP h2)]Cl (7). The catechol derivative 3, in a similar reaction, affords an interesting mononuclear complex [CpRu(PPh3){eta(1)-(C4H4O2)PN(Ph)P( O2H4C6)}(2)]Cl (8) containing two monodentate bis(phosphino)amine liga nds. The structural elucidation of the complexes was carried out by el emental analyses, IR and NMR spectroscopic data. (C) 1998 Elsevier Sci ence S.A. All rights reserved.