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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/1029

Title: A new diphosphinite derived from cyclohexane-1,4-diol: oxidation reactions, metal complexes, P–O bond cleavage and X-ray crystal structures of Ph2P(E)O(C6H10)OP(E)Ph2 (E = S, Se)
Authors: BALAKRISHNA, MS
GEORGE, PP
SHAIKH, MOBIN M
Keywords: bisphosphinite
cyclohexane-1,4-diol
disulfide and diselenide
crystal structure
Issue Date: 2005
Publisher: Elsevier
Citation: Polyhedron 24(4), 475-480
Abstract: The reaction of cyclohexane-1,4-diol with chlorodiphenylphosphine affords bis(phosphinite), Ph2PO(C6H10)OPPh2 (1) in good yield. The bis(phosphinite) (1) reacts with H2O2, elemental sulfur or selenium to give the corresponding dichalcogenide; the structures of the disulfide (3) and diselenide (4) derivatives are confirmed by X-ray crystal structure analysis. The reaction of 1 with phosphoryl azide, N3P(O)(OPh)2 gives the phosphinimine derivative, (PhO)2(O)PN=PPh2O(C6H10)OPh2P=NP(O)(OPh)2 (5) in quantitative yield. Treatment of the ligand 1 with CpRu(PPh3)2Cl results in a bis(phosphinite) bridged dinuclear complex, [CpRuCl(PPh3)]2(μ-PPh2O(C6H10)OPPh2) (7) whereas the reaction of 1 with Pd(II) and Pt(II) derivatives afford cis-chelate complexes, [MCl2 Ph2PO(C6H10)OPPh2 ] (M = Pd, 8; Pt, 9). The reaction of 1 with Mo(CO)6 in the presence of TMNO · 2H2O does not give the expected cis-[Mo(CO)4 Ph2PO(C6H10)OPPh2 ]; instead a cubane-shaped tetranuclear molybdenum(V) complex, [Mo4O4(μ3-O)4 (μ-O2PPh2)4] (6) was obtained due to water assisted cleavage of P–O bonds.
URI: http://dx.doi.org/10.1016/j.poly.2004.12.009
http://hdl.handle.net/10054/1029
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1029
ISSN: 0277-5387
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