A compound of zinc and this element was used to make the first blue LED.
This element aromatizes phenyl∙decalin in the last step of a synthesis of phe·nan·threnes named for Bardhan and Sengupta. Two phosphorus atoms and four atoms of this element link two benzene rings in Woollins' reagent. The 3-prime UTRs of proteins containing this element include a hairpin structure with two loops bridged by a core containing 4 non-Watson-Crick base pairs. Phenyl oxides of this element can be used to synthesize alkenes via reactions like the Grieco elimination. This element is found in the active sites of iodo·thy·ronine de∙io∙dinase, mammalian thio∙redoxin reductase, and gluta∙thione peroxidase. A compound of zinc and this element was used to make the first blue LED. A compound of cadmium and this element is often used in quantum dots. For 10 points, name this element which, in non-standard versions of the amino acids methionine and cysteine, replaces sulfur.
This element aromatizes phenyl∙decalin in the last step of a synthesis of phe·nan·threnes named for Bardhan and Sengupta.
selenium [accept Se]