ChemInform Abstract: 2-Seleno- and 2-Telluroimidazolines: Syntheses, Structures and Properties

2,3-dihydro-2-selenoimidazoles and their tellurium analogues (2) are formed through the reaction of the corresponding 2,3-dihydro-imidazol-2-ylidenes (1) with the chalcogenes. 2 exhibit nucleophilic properties demonstrated by the formation and properties of their iodine derivatives 3 – 7 and their pentacarbonyl metal complexes 8.