X-ray characterization of Te(S2CNC5H10)2 and TeI2[(C13H10N2S)2] • 4C4H8TeI2;: the first Te-C bond cleaved products obtained in the substitution reactions of organo(heterocyclic) tellurium(IV) derivatives

The reaction of organo(heterocyclic)tellurium(IV) derivative: C8H8TeI2,3-dihydro-2 4 -benzotellurole-2,2-diyl diiodide) with NH4S2CNC5H10 (ammonium piperidine dithiocarbamate) gives C8H8Te(S2CNC(5)H(10))(2) (1) and Te(S2CNC5H10)(2) (2) or C8H8TeI(S2CNC5H10) (5) according to the reaction conditions. In such type of metathetical reactions, the formation of 2 is unprecedented and it corresponds to the first Te-C cleaved product. The reaction of 2 with CH3I, yields the oxidative addition product, CH(3)Tel(S2CNC5H10)(2) (8). The formation of 2 is also supported through Quantum Chemical calculations. Another Te-C bond cleaved product TeI2[(C13H10N2S)(2)]center dot 4C(4)H(8)TeI(2) (9) is obtained in the reaction Of C4H8TC12 (1,1,2,3,4,5-hexahydro-1,1-diiodotellurophene) with NHoSoCNHCoHo (ammonium aniline dithiocarbamate). The reaction of 1,1,2,3,4,5,6-heptahydro-1-iodo-1-(morpholine dithiocarbamato) tellurane [C5H8TeI2(S2CNC4H8O)] (10) with 1,10-phenanthroline gives an unusual product C12H8N2 center dot C4H11INO (11). The structures of the new complexes 2, 8, 9, 10 and 11 have been determined by the X-ray analysis. (c) 2007 Elsevier Ltd. All rights reserved.