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- W2093145538 abstract "A stopped-flow spectrophotometric study of the complexation of Co2+ and Ni2+ by the pendant arm ligand, N, N′, N″, N‴-tetrakis(2-hydroxyethyl)-1,4,8,11-tetraazacyclotetradecane (L2), in aqueous solution at pH 6.80, I=1.50 (NaNO3) and 298.2 K yields the rate constants, kLH′=880 and 116 dm3 mol−1 s−1 for the complexation of Co2+ and Ni2+, respectively, by the monoprotonated ligand, L2H+. In aqueous HNO3, the decomplexation of [ML2]2+ is characterized by: kobs=k0+k1K1a[H+]/1+K1a[H+] where at 298.2 K, k0=0.21, ≈0 and ≈0 s−1, k1=151, 0.160 and 6.07 s−1, and K1a=5.2, 83 and 0.67 dm3 mol−1, respectively, when M2+=Co2+, Ni2+ and Cu2+. The effect of the pendant arms on the complexation and decomplexation processes are considered through a comparison of these data with those for 1,4,8,11-tetraazacyclotetradecane and related ligands." @default.
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- W2093145538 date "1993-12-01" @default.
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- W2093145538 title "Complexation of cobalt(II), nickel(II) and copper(II) by the pendant arm macrocyclic ligand N,N′,N″,N‴-tetrakis(2-hydroxyethyl)-l,4,8,11-tetraazacyclotetradecane" @default.
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- W2093145538 doi "https://doi.org/10.1016/s0020-1693(00)87528-3" @default.
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