Macrocyclic cyclodiphosphazane [{P(μ-tBuN)}2(O - m - C6H4 CHNCH2)2]2: synthesis of chalcogen derivatives and gold(I) complex

The synthesis of a Schiff base-appended macrocycle (1) containing cyclodiphosphazane moieties is described. Reactions of 1 with and elemental selenium yielded derivatives tetrakis(oxide) (2) and tetrakis(selenide) (3), in 80% yield. Tetragold complex ] (4) was prepared by reacting 1 with [] in 1:4 molar ratio. All the compounds have been characterized by various spectroscopic techniques. The molecular structure of 3 was confirmed by single crystal X-ray analysis.