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- W2005178939 abstract "The equilibrium constants for the binding of Li+ and Na+ by the cis-Mo(CO)4{Ph2P(CH2CH2O)nCH2CH2PPh2-P,P′} (n = 4 (1), 5 (2)) metallacrown ethers have been determined by fitting the NMR data from titrations to a one-to-one binding model using non-linear least squares techniques. These show that 1 has an approximately equal affinity for Li+ and Na+ but that 2 has a much larger affinity for Na+ than for Li+. The X-ray crystal structures of cis-Mo(CO)4{Ph2P(CH2CH2O)4CH2CH2PPh2-P,P′}·MeOH, 3, (a, 13.602(2); b, 16.211(2); 8.394(2) Å, ; β, 101.26(1)°; monoclinic; P21/n; Z, 4) and cis-Mo(CO)4{Ph2P(CH2CH2O)4CH2CH2PPh2-P,P′} 4, (a, 13.228(3); b, 20.336(4); c, 14.837(1) Å, β, 108.68(1)°; monoclinic; P21/c; Z, 4) have been determined. Both the methanol in 3 and the water in 4 are hydrogen bonded to ether oxygens in the metallacrown ether rings. In wet acetonitrile-d3, the binding of the methanol to the metallacrown ether ring in 3 slows proton exchange between water and methanol so that coupling between the hydroxyl and methyl protons is observed. This coupling disappears when LiBF4 is added to the solution." @default.
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- W2005178939 title "An NMR spectroscopic study of the binding of alkali metal cations and methanol by cis-Mo(CO)4{Ph2P(CH2CH2O)nCH2CH2PPh2-P,P′} (n = 4,5) metallacrown ethers. The X-ray crystal structures of cis-Mo(CO)4{Ph2P(CH2CH2O)4CH2CH2PPh2-P,P′}·MeOH and cis-Mo(CO)4{Ph2P(CH2CH2)4CH2CH2PPh2-P,P′}·H2O" @default.
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- W2005178939 doi "https://doi.org/10.1016/0020-1693(96)05069-4" @default.
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