Browsing by Author "BOYS, D"
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- ItemBIS(DIPHENYLPHOSPHINO)METHANE AND ITS SULFIDE OR SELENIDE DERIVATIVES AS LIGANDS IN RUTHENIUM(II) AND RHODIUM(III) COMPLEXES - CRYSTAL-STRUCTURE OF [(ETA(6)C(6)ME(6))RU(ETA(3)(SPPH(2))(2)CH)]CLO4(1995) VALDERRAMA, M; CONTRERAS, R; BASCUNAN, M; ALEGRIA, S; BOYS, DReaction of complexes [(eta(6)C(6)Me(6))RuCl2](2) and [(eta(5)C(5)Me(5))RhCl2](2) with the ligands L = Ph(2)PCH(2)PPh(2) (dppm) or Ph(2)PCH(2)P(Se)Ph(2) in benzene solutions led to neutral complexes with the general formula [(ring)MCl(2)(eta(1)L)]. The reactivity of the uncoordinated P atom of dppm has been studied. When the reaction was carried out in methanol solutions, cationic complexes, with the ligands acting in their bidentate form, were obtained. Similar cationic perchlorate complexes were prepared using acetone as solvent in the presence of sodium perchlorate, yielding [(ring)MCl(eta(2)L)]ClO4, where L = Ph(2)PCH(2)PPh(2), Ph(2)PCH(2)P(Se)Ph(2) or Ph(2)P(S)CH2P(S)Ph(2). The complex [(eta(6)C(6)Me(6))RuCl{eta(2)(SPPh)(2) CH2-S,S'}]ClO4 reacted with sodium hydride in tetrahydrofuran or thallium pyrazolate in dichloromethane solution by deprotonation of the coordinated bidentate ligand giving the complex [(eta(6)C(6)Me(6))Ru{eta(3)(SPPh(2))(2)CH-C,S,S'}]ClO4. The structure of this complex has been determined by single crystal X-ray diffraction methods. The complex contains a tridentate C,S,S'-bonded ligand occupying three coordination positions of a distorted octahedral ruthenium centre, with an eta(6)C(6)Me(6) group completing the coordination sphere.
- ItemORGANOMETALLIC CHELATING LIGANDS - SYNTHESIS OF A NEW ANIONIC TRIPOD LIKE LIGAND WITH AN N,N',O-DONOR SET - X-RAY CRYSTAL-STRUCTURE OF [(ETA(6)-C6ME6)RU(MU-P(O)(OME)2)(MU-PZ)2RE(CO)3] (ME=METHYL, PZ=PYRAZOLATE)(1994) SCOTTI, M; VALDERRAMA, M; MORENO, R; LOPEZ, R; BOYS, DThe synthesis of the new anionic organometallic chelating ligand [(eta6-C6Me6)Ru{P(O)(OMe)2}(Pz)2]- = L-(Me = methyl, Pz = pyrazolate) is described. This ligand was isolated as its neutral sodium derivative NaL. approximately 0.7NaPF6, which is a new synthetic precursor for obtaining heterobimetallic complexes with phosphonate and pyrazolate groups acting as bridging ligands. The heterobimetallic compound LRe(CO)3 was obtained by reaction of ReBr(CO)5 with NaL. approximately 0.7NaPF6, in which the anionic complex L- is acting as an N,N',O-tripod donor ligand. The structure of the title complex was established by X-ray crystallography. The compound crystallizes as monoclinic, space group Cc (No. 9) with a=31.214(6), b=11.111(2), c=15.769(3) angstrom, beta=103.14(3)-degrees. The neutral complex has a binuclear structure with the (C6Me6)Ru and Re(CO)3 Moieties triply bridged by two pyrazolate groups and one phosphonate group. The synthesis of TlPz is also described.
- ItemSYNTHESIS AND PHYSICOCHEMICAL PROPERTIES OF POLY[4-(1,1,3,3-TETRAMETHYLBUTYL)PHENYL METHACRYLATE](1980) OJEDA, T; RADIC, D; GARGALLO, L; BOYS, D
- ItemVISCOSITY STUDIES OF SOME POLYAMIDES DISSOLVED IN MIXED-SOLVENTS (COSOLVENTS)(1977) RADIC, D; BOYS, D; GARGALLO, L