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• W2038577993 abstract "The reaction of the μ3-benzylidyne capped cluster PhCCo3(CO)9 (1) with 2, 3-bis(diphenylphosphino)maleic anhydride (L-L) has been examined at 75 °C in toluene solvent. The major product isolated was not the expected diphosphine complex PhCCo3(CO)7(L-L) but rather the new cluster Co3(CO)6(μ2-η2-η1(O))(μ2-PPh2) (2). It is shown that the μ3-benzylidyne ligand in 1 is transformed into a bridging benzylidene ligand as a result of the formal insertion into one of the PC bonds of the ancillary 2, 3-bis(diphenylphosphino)maleic anhydride ligand. Formation of a μ2-phosphido group accompanies this transformation. Cluster 2 has been characterized by IR and 31P1H NMR spectroscopy. Single-crystal X-ray diffraction analysis establishes the presence of the new six-electron μ2-benzylidene-η2-η1(diphenylphosphino)maleic anhydride ligand. 2 crystallizes in the monoclinic space group P21/n, a=11.538(1), b=17.0754(8), c=19.506(1) A, β=92.108(7)°, Z=4, Dcalc=1.557 g cm−3, R=0.0392, Rw=0.0432 for 2012 observed reflections. Cluster 2 provides the experimental basis for enhanced μ3-CCo bond reactivity as opposed to CoCo bond reactivity. The significance of 2 is discussed in the context of cluster catalysis and ligand-modulated reactivity of the μ3-benzylidyne ligand in 1." @default.
• W2038577993 created "2016-06-24" @default.
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• W2038577993 date "1993-10-01" @default.
• W2038577993 modified "2023-09-27" @default.
• W2038577993 title "Tetrahedrane cluster and phosphorus ligand activation in the reaction between PhCCo3(CO)9 and 2,3-bis(diphenylphosphino)maleic anhydride. Molecular structure of Co3(Co)6(μ2-η2-η1-(O))(μ2-PPh2)" @default.
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• W2038577993 doi "https://doi.org/10.1016/s0020-1693(00)92301-6" @default.
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