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• W2046616324 abstract "A neutral selenium donor ligand, [CpFe(CO)2P(Se)(OR)2] is used for the construction of CuI and AgI complexes with a well-defined coordination environment. Four clusters [M{CpFe(CO)2P(Se)(OR)2}3](PF6), (where M = Cu, R = nPr, 1; R = iPr, 2 and M = Ag, R = nPr, 3; R = iPr, 4) are isolated from the reaction of [M(CH3CN)4(PF6)] (where M = Cu or Ag) and [CpFe(CO)2P(Se)(OR)2] in a molar ratio of 1 : 3 in acetonitrile at 0 °C. The reaction of [CpFe(CO)2P(Se)(OiPr)2] with cuprous halides in acetone produce two mixed-metal, CuI2FeII2clusters, [Cu(μ-X) {CpFe(CO)2P(Se)(OiPr)2}]2 (X = Cl, 5; Br, 6). All six clusters have been fully characterized spectroscopically (1H, 13C, 31P, and 77Se NMR, IR), and by elemental analyses. X-Ray crystal structures of 1 and 3 consist of discrete cationic clusters in which three iron–selenophosphito fragments are linked to the central copper or silver atom viaselenium atoms. Both clusters 1 and 3 crystallize in the noncentrosymmetric, hexagonal space groupP2c. The coordination geometry around the copper or silver atom is perfect trigonal-planar with Cu–Se and Ag–Se distances, 2.3505(7) and 2.5581(7) Å, respectively. X-Ray crystallography also reveals that each copper center in neutral heterometallic clusters 5 and 6 is trigonally coordinated to two halide ions and a selenium atom from the selenophosphito–iron moiety. The structures can also be delineated as a dimeric unit which is generated by an inversion center and has a Cu2X2 parallelogram core. The dihedral angle between the Cu2X2 plane and the plane composed of Cp ring is found to be 24.62 and 84.58° for compound 5 and 6, respectively. Hence the faces of two opposite Cp rings are oriented almost perpendicular to the Cu2X2 plane in 6, but are close to be parallel in 5. This is the first report of the coordination chemistry of the anionic selenophosphito moiety [(RO)2PSe]−, the conjugated base of a secondary phosphine selenide, which acts as a bridging ligand with P-coordination on iron and Se-coordination to copper or silver." @default.
• W2046616324 created "2016-06-24" @default.
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• W2046616324 date "2008-01-01" @default.
• W2046616324 modified "2023-10-11" @default.
• W2046616324 title "The coordination chemistry of selenophosphite ligands. Synthesis and characterization of heterometallic tetranuclear clusters [M{CpFe(CO)2P(Se)(OR)2}3](PF6) (M = Cu, Ag; R = nPr, iPr) and [Cu(μ-X) {CpFe(CO)2P(Se)(OiPr)2}]2 (X = Cl, Br)" @default.
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• W2046616324 doi "https://doi.org/10.1039/b717963d" @default.
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