Abstract
In the title salt, di-μ-oxido-bis-{2,6-bis-[(di-methyl-amino)-meth-yl]phenyl-κC 1}tellurium(-IV) bis[tri-chlorido-(dimethyl sulfoxide-κS)platinate(II)], (C24H38N4O2Te2)[PdCl3(C2H6OS)]2, which crystallizes in the triclinic space group P , each Te atom is in a distorted five-coordinated TeO2N2C square-pyramidal geometry (τ values of 0.026 and 0.001) with the C atoms of the phenyl rings occupying the apical positions. The phenyl rings in the [C24H38N4O2Te2]2+ cation are in a cis arrangement to enable this species to participate in Te⋯Cl cation-anion inter-actions. There are also C-H⋯O inter-actions involving the dimethyl sulfoxide ligands and numerous cation-anion and anion-anion C-H⋯Cl inter-actions, which link the ions into a complex three-dimensional array.
Highlights
Di--oxido-bis{2,6-bis[(dimethylamino)methyl]phenyl-C 1}tellurium(IV) bis[trichlorido(dimethyl sulfoxide-S)platinate(II)], (C24H38N4O2Te2)[PdCl3(C2H6OS)]2, which crystallizes in the triclinic space group P1, each Te atom is in a distorted five-coordinated TeO2N2C squarepyramidal geometry with the C atoms of the phenyl rings occupying the apical positions
There are C—HÁ Á ÁO interactions involving the dimethyl sulfoxide ligands and numerous cation–anion and anion–anion C— HÁ Á ÁCl interactions, which link the ions into a complex three-dimensional array
It is worth noting that, compared to the selenenium cation of ligand L, studies on their higher congener i.e., tellurenium cations, are relatively scarce in the literature and this was the initial impetus for this work
Summary
After the initial discovery (Moulton & Shaw, 1976) and seminal contributions from various research groups, the coordination chemistry of pincer ligands has become an important field in coordination chemistry (Peris & Crabtree, 2018). It is worth noting that, compared to the selenenium cation of ligand L, studies on their higher congener i.e., tellurenium cations, are relatively scarce in the literature and this was the initial impetus for this work. Furukawa and co-workers reported the synthesis of a tellurenium cation by the reaction of heteroleptic diorganotelluride LTeR (where R = n-butyl) with Br2/K[PF6] It is interesting to note that the related tin(II) cations of ligand L, containing one lone pair of electrons, have been used as ligands to isolate heterobimetallic complexes 4a,b (Martincovaet al., 2011, 2012). No such coordination chemistry has been explored for the selenenium(II) and tellurenium(II) cations of ligand L, which have two such pairs of electrons. A notable work is that by Lin & Gabbaı (2013) where they used TeIV cations having one lone pair of electrons as ligands for isolating complex 5 where the TeIV center acted as a -acceptor (Z-type) ligand
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