Polyheteroatom cations

Polyheteroatom Cations. So far, only studies on homopolyatomic cations of oxygen, sulfur, selenium, and tellurium have been discussed. Most of them were of the type X,21. There is a new class of polyatomic cations that comprise two or more heteroatoms. 

Selenium and tellurium multinuclear NMR studies provided useful structural information for Te—Se polyheteroatom cations.937-939 

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Te), and mixed polyheteroatom cations of group 15, 16, and 17 elements obtained in superacid media will be discussed. 

Polyheteroatom Cations of Nitrogen and Sulfur. The simplest stable S—N species is the NS+ thiazyl cation.940 A convenient synthesis is the reaction of excess AgAsF6 with S3N3CI3 in SO2.941 The bond length of the NS+ cation shows a pronounced temperature dependence (corrected value = 1.42 A), and of the two resonance structures N=S+ is stabilized by ionic interactions.942... 

Polyheteroatom Cations of Halogens with Oxygen or Nitrogen. 

Polyheteroatom Cations of Chalcogens with Halogens. A number of binary polyheteroatom cations of Group 6 and 7 elements have been prepared and characterized. 

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