ChemInform Abstract: Synthesis of Stable Alkanetellurenyl Pseudohalides and Pseudochalcogenides: (Me3Si)3CTeX (X: ‐CN, ‐SCN, ‐SeCN, ‐NCO, ‐N3) and (Me3Si)3CTe‐Y‐TeC(SiMe3)3 (Y: ‐NCN‐, ‐NSN‐).

Abstract

Synthesis of Stable Alkanetellurenyl Pseudohalides and PseudochalcogenidesThe first stable and isolable alkanetellurenyl pseudohalides with the silver or potassium salts of the respective pseudoand pseudochalcogenides, tris(trimethylsily1)methanetellu-halides or pseudochalcogenides. 5 -8 are also the first alkylrenyl cyanide, thiocyanate, selenocyanate, isocyanate, azide tellurium(I1) compounds with Te -N bonding. All compounds(2 -6) as well as bis[tris(trimethylsilyl)methyltelluro]carbodi-have been characterized by *H-, 13C-, 125Te-NMR, mass, and imide and -sulfur diimide (7,8) are obtained in high yields by IR spectroscopy. the reaction of tris(trimethylsilyl)methanetellurenyl iodide (1)

Synthesis and Stability of Ammonium Selenocyanate [NH4][SeCN] and Its Reactivity toward Ag[SeCN]

“…In contrast to [NH 4 ]­[SeCN], Ag­[SeCN] is a shelf-stable compound insensitive to air and moisture. Its first mention in the literature dates back to 1851. , Since then, it has been used as a [SeCN] − transfer agent in inorganic − and, more recently, also in organic syntheses, − both of which exploit the formation of AgCl as a thermodynamic driving force in metathesis reactions. However, its crystal structure and other key properties have not been reported so far, and also its aptness toward the formation of Ag-containing multinary selenocyanates has received little attention …”