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Your search keyword '"Manassero, M."' showing total 43 results
Start Over Author "Manassero, M." Publisher elsevier bv
43 results on '"Manassero, M."'

17. Controlled cell Adhesion and aCtivity onto TAl6V TItanium alloy by grafting of the SURFace: Elaboration of orthopaedic implants capable of preventing joint prosthesis infection

Author

Migonney, V., primary, Ben Aissa, I., additional, Lutomski, D., additional, Hélary, G., additional, Oughlis, S., additional, Poirier, F., additional, Changotade, S., additional, Peltzer, J., additional, Lataillade, J.-J., additional, Blanquaert, D., additional, De Lambert, B., additional, Viateau, V., additional, Manassero, M., additional, Crémieux, A.-C., additional, Saleh-Mghir, A., additional, and Thomas, D., additional

Published
2013
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19. Ligart : ligament synthétique « bioactif » et « biointégrable » permettant la réhabilitation rapide du patient : greffage chimique, évaluations biologiques in vivo, expérimentation animale, étude préclinique

Author

Viateau, V., primary, Zhou, J., additional, Guérard, S., additional, Manassero, M., additional, Thourot, M., additional, Anagnostou, F., additional, Mitton, D., additional, Brulez, B., additional, and Migonney, V., additional

Published
2011
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40. Fe–Cu octahedral carbide clusters, and the replacement of their labile halide ligands: Synthesis, solid state structure, substitution and electrochemical reactivity of [Fe5C(CO)14(CuBr)]2−, [Fe4C(CO)12(CuCl)2]2−, [{Fe4Cu2C(CO)12(μ-Cl)}2]2−, [Fe5C(CO)14(CuOC4H8)]− and [Fe4C(CO)12(CuNCMe)2]

Author

Stefano Zacchini, Roberto Della Pergola, Piero Zanello, Carlo Manassero, Luigi Garlaschelli, Donatella Strumolo, Francesco Kaswalder, Serena Fedi, Mario Manassero, Annalisa Sironi, DELLA PERGOLA, R, Sironi, A, Garlaschelli, L, Strumolo, D, Manassero, C, Manassero, M, Fedi, S, Zanello, P, Kaswalder, F, and Zacchini, S

Subjects
CHIM/03 - CHIMICA GENERALE E INORGANICA, Heterometallic cluster, Chemistry, Iron, Dimer, chemistry.chemical_element, Halide, Electrochemistry, Copper, Interstitial carbide, Inorganic Chemistry, Metal, Crystallography, chemistry.chemical_compound, Heteronuclear molecule, Octahedron, visual_art, Materials Chemistry, visual_art.visual_art_medium, Reactivity (chemistry), Substitution reaction, Physical and Theoretical Chemistry
Abstract

The reactions between [Fe 6 C(CO) 16 ] 2− and CuCl, in refluxing THF, yield [Fe 5 C(CO) 14 (CuCl)] 2− ( 1 ), [Fe 4 C(CO) 12 (CuCl) 2 ] 2− ( 2 ), or [{Fe 4 Cu 2 C(CO) 12 (μ-Cl)} 2 ] 2− ( 3 ), depending on the Fe 6 /CuCl ratio. The chloro ligands of these clusters can be displaced either spontaneously, or by metal-assisted substitution, to give the bromo derivative [Fe 5 C(CO) 14 (CuBr)] 2− ( 4 ) or the solvento complexes [Fe 5 C(CO) 14 (CuTHF)] − ( 5 ) and [Fe 4 C(CO) 12 (CuNCMe) 2 ] ( 6 ). The latter can be also obtained directly, by metal substitution from [Fe 6 C(CO) 16 ] 2− and [Cu(NCMe) 4 ]BF 4 , or by polyhedral expansion from [Fe 4 C(CO) 12 ] 2− . All the clusters are octahedral, with the copper atoms in a pseudo-linear geometry, where one of the coordination positions is occupied by the interstitial carbide. The two copper atoms in the Fe 4 Cu 2 clusters are always in cis geometry and, in the dimer [{Fe 4 Cu 2 C(CO) 12 (μ-Cl)} 2 ] 2− , they are joined through chlorides. The role of the different metal centres in determining the redox activity of the heteronuclear Fe–Cu clusters 1 , 2 , 3 , has been studied by electrochemical methods. In the bridged dimer 3 , the two Fe 4 Cu 2 C cluster units resulted electronically not communicating.

Published
2010

41. Iron–nickel mixed metal nitrido clusters: Synthesis and solid state structure of the anions [HFe5NiN(CO)14]2− and [HFe4Ni2N(CO)13]2−

Author

Mario Manassero, Roberto Della Pergola, Luigi Garlaschelli, Carlo Manassero, Alessandro Fumagalli, Annalisa Sironi, Mirella Sansoni, DELLA PERGOLA, R, Fumagalli, A, Garlaschelli, L, Manassero, C, Manassero, M, Sansoni, M, and Sironi, A

Subjects
Iron, Inorganic chemistry, chemistry.chemical_element, Nitride, Solid state structure, Inorganic Chemistry, Metal, Nickel, iron, nickel, interstitial nitride, hydride ligands, metal cluster, Materials Chemistry, Cluster (physics), Physical and Theoretical Chemistry, CHIM/03 - CHIMICA GENERALE E INORGANICA, Heterometallic cluster, Mixed metal, Bond length, Crystallography, Bridging hydride, Octahedron, chemistry, visual_art, visual_art.visual_art_medium, Interstitial nitrogen atom
Abstract

The two clusters [HFe5NiN(CO)14]2- (1) and [HFe4Ni2N(CO)13]2- (2) were obtained by reaction of [Fe4N(CO)12]- and [Ni6(CO)12]2- in refluxing MeCN and EtCN, respectively, along with other Fe-Ni mixed metal clusters. Their solid state structures were determined on the [PPh4]+ salts, and both have an octahedral metal cage, containing an interstitial nitrogen atom. The two Ni atoms in 2 are cis, with a Ni-Ni separation of 2.724(1) Å. The two anions have different stereochemistry of the carbonyl ligands: in 1, five CO's are semi-bridging, and the remaining nine are terminal; in 2 there are three asymmetric bridging and ten terminal ligands (two for each iron and one for each nickel). The hydride ligands were located in the final difference maps, both bridging a Ni-Fe edge of the clusters but, thanks to the better quality of the diffraction data, the metal-hydrogen distances were refined only in 2. In this cluster, the Fe-H and Ni-H bond lengths are 1.77(2) and 1.79(2) Å, respectively. © 2006 Elsevier B.V. All rights reserved.

Published
2008

42. Chemistry of iridium carbonyl cluster complexes. Synthesis, chemical characterization and X-ray crystal structures of [PPh4][Ir6(CO)15Cl] · C4H8O and [PPh4][Ir6(CO)14Cl]

Author

Robert Bau, Francesco Demartin, Norberto Masciocchi, Roberto Della Pergola, Dong Zhao, Luigi Garlaschelli, Secondo Martinengo, Mario Manassero, DELLA PERGOLA, R, Garlaschelli, L, Martinengo, S, Demartin, F, Manassero, M, Masciocchi, N, Bau, R, and Zhao, D

Subjects
CHIM/03 - CHIMICA GENERALE E INORGANICA, Stereochemistry, Organic Chemistry, chemistry.chemical_element, metal cluster, Crystal structure, iridium, halide ligand, Biochemistry, Ion, Inorganic Chemistry, chemistry.chemical_compound, Crystallography, chemistry, Octahedron, X-ray crystallography, Materials Chemistry, Molecule, Iridium, Physical and Theoretical Chemistry, Tetrahydrofuran, Carbon monoxide
Abstract

The anion [Ir 6 (CO) 15 Cl] − has been formed by treating [Ir 6 (CO) 15 ] 2− with FeCl 3 ; [Ir 6 (CO) 15 Cl] − ( 1 ) is the first species formed, but if kept standing 1 slowly loses a CO ligand to give [Ir 6 (CO) 14 Cl] − ( 2 ). Compound 1 can also be obtained by treating Ir 6 (CO) 16 with LiCl in anhydrous tetrahydrofuran, but, because of the long reaction time needed, a substantial amount of compound 2 is also formed. The crystal structures of [PPh 4 ][Ir 6 (CO) 15 Cl] · C 4 H 8 O ( 1 ) and [PPh 4 ][Ir 6 (CO) 14 Cl] ( 2 ) have been determined. Anion 1 contains an octahedron of iridium atoms surrounded by eleven terminal, one edge, and three face-bridging carbonyl groups, and by one terminal chlorine atom. The disposition of the bridging carbonyl groups can be related to that of Ir 6 (CO) 16 (red isomer) in which one face-bridging carbonyl group has become edge bridging. Selected bond distances are: IrIr(average) 2.774, IrC(terminal, average) 1.85, IrC(edge bridging, average) 2.13, IrC(face bridging, average) 2.22, IrCl 2.395(5) A. Anion 2 contains a slightly distorted octahedron of iridium atoms bearing twelve terminal and two edge-bridging carbon monoxide groups; the chlorine atom bridges an IrIr edge. The stereochemistry of anion 2 is related to that of [Ir 6 (CO) 15 ] 2− by replacing an edge-bridging carbonyl group by the μ-halogen atom [Cl bridges Ir(4)Ir(3), C(13) bridges Ir(1)Ir(6), C(14) bridges Ir(2)Ir(3)]; i.e. each of the six iridium atoms is involved in only one bridge. Average selected bond distances are: IrIr 2.767, IrC(terminal) 1.85, IrC(edge bridging) 2.05, IrCl 2.484 A.

Published
1990

43. Bimetallic CoNi carbide clusters: synthesis and crystal structure of the [Co2Ni10(CO)20C]2− and [Co3Ni9(CO)20C]2− dianions

Author

Mirella Sansoni, Alessandro Ceriotti, Mario Manassero, Giuliano Longoni, Roberto Della Pergola, Norberto Masciocchi, Ceriotti, A, DELLA PERGOLA, R, Longoni, G, Manassero, M, Masciocchi, N, and Sansoni, M

Subjects
CHIM/03 - CHIMICA GENERALE E INORGANICA, Chemistry, Stereochemistry, Organic Chemistry, Crystal structure, cobalt, Biochemistry, paramagnetism, heterometallic cluster, Carbide, Inorganic Chemistry, nickel, Crystallography, Dodecahedron, Tetragonal crystal system, X-ray crystallography, Materials Chemistry, Physical and Theoretical Chemistry, Isostructural, Single crystal, Bimetallic strip
Abstract

The synthesis, chemical behavior and single crystal X ray structure of two new CoNi bimetallic carbide clusters, namely [Co 2 Ni 10 (CO) 20 C] 2− and [Co 3 Ni 9 (CO) 20 C] 2− , are reported. The first complex was isolated in ca. 30% yield among the products of the reaction of Co 3 (CO) 9 CCl with [Ni 6 (CO) 12 ] 2− , while the second was obtained quantitatively by reaction with protonic acids of the previously reported [Co 3 Ni 9 (CO) 20 C] 3− . The two compounds are isostructural and show a metal frame which can be regarded as derived by distortion of a tetra-capped triangulated dodecahedron of D 2 d symmetry; the statistical (Co and Ni atoms being undistinguishable) idealized symmetry of the metal frame is only D 2 owing to progressive deformations toward a tetra-capped tetragonal antiprismatic geometry, which are probably related to the steric requirements of the interstitial carbide atom.

Published
1987

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