The reaction of 1,1,2,3,3-pentamethyltrimethylenephosphinic acid (cycPO(2)H) with bis(p-methoxyphenyl)tellurium dichloride (1) affords a 12-membered macrocycle [((p-MeOC6H4)(2)Te)(2)(mu-O)(mu-cycPO(2))(U-4-Cl)](2)center dot C6H6 (2) in good yield. The latter reacts with sodium iodide to give [((p-MeOC6H4)(2)Te)(2)(mu-O)(mu-cycPO(2))(U-4-l)](2)center dot C6H6 (3). 2 and 3 are isostructural dicationic macrocycles and contain a Te4P2O6 framework. An interesting aspect of both of these structures is that two counter halide atoms are present as capping ligands above and below the marocyclic plane enabled by Te-X interactions. In contrast to the macrocyclic product obtained with diorganotellurium dihalide the reaction of diphenyltin dichloride with cycPO(2)H resulted in,the formation of an oxygen-capped cluster [(PhSn)(3)(mu(3)-O)(mu-cycPO(2))(3)(mu-OH)(3)][cycPO(2)]center dot CH3CN. The latter is formed by a Sn-Ph cleavage reaction.