Interaction of Zinc and Cadmium Bis(benzothiazole-2-thiolates) with Nitrogen Bases

Article abstract of DOI:10.1039/DT9930003367

The reactions of polymeric and with pyridine (py), 2,2'-bipyridine (bipy) and 1,10-phenanthroline (phen) lead to the formation of mononuclear adducts which have been characterized by elemental analysis and infrared spectroscopy.The complexes 1, (Zn(C7H4NS2)2(bipy)> 2 and 3 were structurally characterized by X-ray crystallography.Adducts 1 and 2 have distorted-tetrahedral ZnN2S2 cores.The zinc ions are co-ordinated to the two exocyclic S atoms of the benzothiazole-2-thiolates and to two nitrogen atoms from the py or bipy base.The Zn-S and Zn-N bond distances are 2.324(1) and 2.063(4) Angstroem in 1 and 2.310(13) and 2.096(4) Angstroem in 2.The complex was found to be isomorphous to 2.Adduct 3 shows a distorted-octahedral CdN4S2 unit formed by two bidentate S,N benzothiazole-2-thiolates and two cis pyridine nitrogen atoms.The two exocyclic S atoms are located at the axial positions.The mean Cd-S and Cd-N bonds of the bidentate ligands in 3 are 2.706(10) and 2.422(30) Angstroem and the corresponding mean Cd-N(py) is 2.334(4) Angstroem.The infrared spectra of the adducts in the range 650-200 cm^-1 are discussed in the light of the known structures.The thermal degradation of complexes 1-3 affords ZnS or CdS.

Full text of DOI:10.1039/DT9930003367

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