Nickel complexes of N-alkylated derivatives of 2,6-bis(aminomethyl)-4-tert-butyl-thiophenol

The syntheses of N-alkylated derivatives of the arenethiol 4-tert-butyl-2,6 -(di aminomethyl)thiophenol and their coordination properties are reported. Compounds 4-tert-butyl-2,6-di(N-isopropyl-aminomethyl)thiophenol (3) and 4 -tert-butyl-2-(N-isopropyl-aminomethyl)-6-hydroxy-methylthiophenol (6) reac t with Ni(II) salts to give compounds of composition [Ni(3)(2)]. 2HCl (7) a nd [Ni(6)(2)] (8). The solid- and solution-state structures of both complex es consist of mononuclear complexes with four-coordinate nickel(II) ions in approximately planar trans-N2S2 coordination environments. In contrast to the parent arenethiol 4a, the sterically more encumbered ligands do not for m dinuclear complexes.