73207-72-4Relevant academic research and scientific papers
Synthesis of a new multidentate phosphane ligand C6H2(CH2PPh2)4-1,2,4,5 - X-ray structure of a dinuclear ruthenium(II)-bridged complex: [{RuCl2(PPh3)}2{C6H 2(CH2PPh2) 4-1,2,4,5-P,P′,P″,P?}]
Steenwinkel, Pablo,Kolmschot, Sebastiaan,Gossage, Robert A.,Dani, Paulo,Veldman, Nora,Spek, Anthony L.,Van Koten, Gerard
, p. 477 - 483 (2007/10/03)
The tetrakis(phosphane oxide) C6H2{CH2P(O)Ph2}4-1,2,4,5 (5), has been prepared in high yield from the Arbuzov reaction of C6H2(CH2Br)4-1,2,4,5 (4), with excess (7 equiv.) of Ph2POEt. Subsequent reduction of 5 with HSiCl3 (12 equiv.) in C6H4Cl2-1,2 afforded the new tetraphosphane C6H2(CH2PPh2)4-1,2,4,5 (6), in high yield. The reaction of 6 with [RuCl2(PPh3)4] in CH2Cl2 afforded the green dinuclear ruthenium(II) coordination complex [{RuCl2(PPh3)}2[C6H 2-(CH2PPh2) 4-1,2,4,5-P,P′,P″,P?}]·0.5 CH2Cl2 (8), in 39percent isolated yield. The solid-state molecular geometry of 8, determined by X-ray analysis, shows that the tetraphosphane is ortho-P,P′-chelated to each of the two [RuIICl2(PPh3)] units.
