Synthesis and structure of new aryltellurenyl halides derived from (dmpTe)2 (dmp = 2,6-dimethoxyphenyl)

RTeTeR] (R = dmp = 2,6-dimethoxyphenyl) (1) reacts with bromine to give RTeTe(Br)₂R] (2) and RTeBr₃] (3), and with SOCl₂ to yield RTeTe(Cl)₂R] (5) and RTeCl₃] (6). The recrystallization of compound 3 in acetone produces RTeBr₂(CH₂-C(O)-CH₃)] (4). The hydrolysis of 2 in aqueous ammonia and methanol containing media affords the methoxy/oxo-derivative RTe(μ-O)(OCH₃)]₂ (7). All the title compounds were obtained with good yields, and strong Te?O_(methoxy), as well as Te?X (X = Br, Cl) secondary interactions, support the distorted octahedral configurations shown mostly in the polymeric compounds 3, 4, 5 and 6. Complexes 2 and 5 close the series of compounds with the structure RTeTe(X)₂R] (X = Cl, Br, I), started earlier with RTeTe(I)₂R].