2-(4-Ethoxyphenlytelluromethyl)tetrahydro-2H-pyran (L1) and 2-(2-{4-ethoxyphenyl}telluroethyl)-1,3-dioxane (L2): synthesis, reactions of L1 with iodine and ligation of L1 with Ru(II), Cu(I), and Hg(II) and L2 with Ru(II). Crystal structures of [RuCl2(p-cy

2-(4-Ethoxyphenlytelluromethyl)tetrahydro-2H-pyran (L1) and 2-(2-{4-ethoxyphenyl}telluroethyl)-1,3-dioxane (L2) have been synthesized by reacting in situ generated ArTe−Na+ with an appropriate organic halide. The reaction of L1 with iodine results in its diiodo derivative [L1(I)2] (1). The complexes of stoichiometries [CuBrL1] (2), [HgBr2L1] (3) and [RuCl2(p-cymene)·L1/L2] (4/5) are synthesized. The NMR (1H and 13C) in conjunction with elemental analyses, molecular weight and conductance measurements were used to characterize L1, L2, 1 and the complexes 2–5. The ligands coordinate in all the complexes through Te, as indicated by the deshielding of CH2Te signals (up to ∼0.8 ppm) with respect to those of free ligands, except in the case of 2 in which bonding through CH2O has also to be invoked. Complexes 4 and 5 are characterized structurally (RuTe bond length: 2.619(8) and 2.642(1) Å, respectively). The RuCl bond lengths are in the range 2.404(3)–2.420(6) Å. The TeC(aryl) bond is shorter than the TeC(alkyl) bond in 4 but similar in 5. The two Ru(II) complexes are the first examples with potential (Te, O) ligands of Ar(R)Te type, which have been structurally characterized.