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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/10497

Title: Aminophosphines derived from morpholine and N-methylpiperazine: Synthesis, oxidation reactions and transition metal complexes
Authors: BALAKRISHNA, MS
SURESH, D
GEORGE, PP
MAGUE, JT
Keywords: cross-coupling reactions
molecular-structures
coordination chemistry
substitution-reactions
phosphorus reagents
crystal
ligands
derivatives
phosphines
hydrogenation
Issue Date: 2006
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Citation: POLYHEDRON, 25(16), 3215-3221
Abstract: The synthesis, derivatization and coordination behavior of N-diphenylphosphinomorpholine (1) and N-diphenylphosphinopiperazine (2) is described. Ligands 1 and 2 react with elemental sulfur or selenium to give the corresponding chalcogenides in good yield. Reaction of 1 with paraformaldehyde leads to the insertion of methylene into P-N bond to give phosphine oxide, Ph2P(O)CH2NC4H8O in quantitative yield. Treatment of 2 with [Pd(COD)Cl-2] produces both the mononuclear [PdCl2{(Ph2PNC4H8O)-kappa P}(2)] and the chloro-bridged dinuclear complex, [(OC4H8NPh2P)Pd-(mu-Cl)Cl](2) whereas the similar reaction of 2 with [Pt(COD)Cl-2] affords only the mononuclear complex [PtCl2{(Ph2PNC4H8O)-kappa P}(2)], Interestingly, ligand 2 reacts with Mo(0), W(0), Ru(II), Pd(II), Pt(II) and Au(I) derivatives to furnish exclusively mononuclear complexes. The molecular structures of Ru(II) and Pd(II) dimer have been confirmed by X-ray studies. (C) 2006
URI: http://dx.doi.org/10.1016/j.poly.2006.05.041
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10497
http://hdl.handle.net/10054/10497
ISSN: 0277-5387
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