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, X2=O2C6H4)
摘要:
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 cationic mononuclear complexes depending on the reaction conditions. Reaction 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)-Ph2PN(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 only to the isolation of cationic complex, [CpRu(PPh3)(eta(2)-Ph2PN(Ph)PPh2)]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 ligands. The structural elucidation of the complexes was carried out by elemental analyses, IR and NMR spectroscopic data. (C) 1998 Elsevier Science S.A. All rights reserved.
phosphororganische Antioxidantien. XII. Synthesen und NMR-Spektren phosphororganischer Antioxidantien und verwandter Verbindungen
作者:T. K�nig、W. D. Habicher、U. H�hner、J. Pionteck、C. R�ger、K. Schwetlick
DOI:10.1002/prac.19923340407
日期:——
The syntheses of various aliphatic, aromatic, sterically hindered, and cyclic organophosphorus compounds (phosphorous acid esters, ester chlorides and ester amides, hydrogen phosphites, phosphonates and phosphates) are reported, and general procedures for preparation are given.The compounds synthesized were investigated by means of P-31-, H-1- and C-13-n.m.r. spectroscopy, and the chemical shifts measured are listed.