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Upon the sequential stoichiometric addition of methyl iodide to acetonitrile solutions of the square planar nickel (II) complex of N,N′-bis(2-mercapto-2-methylpropyl)-1,5-diazacyclooctane, (bme*-daco)Ni, mono- and bis-methylated thioether compounds were isolated. Both are crystallographically and electrochemically characterized and compared to analogues of N,N′-bis(2-mercaptoethyl)-1,5-diazacyclooctane,...
The unusually high first protonation constant (pK 1 ) of 1,4,7-tris(2-hydroxyethyl)-1,4,7-triazacyclononane (L) is analysed. A 1 H NMR study of the protonation of L in D 2 O confirms the high value of pK 1 reported previously (C.M. Madeyski, J.P. Michael and R.D. Hancock, Inorg. Chem., 23 (1984) 1487). The crystal structure of L.HBr is reported: monoclinic, space...
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