Patent ID: 7906500

Claim:
A compound having the structure of Formula I: wherein E is Se and A − is an anionic group selected from the group consisting of halides, sulfonates; carboxylates; hexafluorophosphate, and tetrafluoroborate; and I) i) W, X, Y, and Z are hydrogen; ii) R 1 ′, R 2 ′, R 1 ″ and R 2 ″ are independently hydrogen or C 1 through C 8 branched or unbranched alkyl, and, optionally, 1) R 1 ′ and R 2 ′ are alkyl groups connected such that they comprise a 3-, 4-, 5-, 6- or 7-membered ring which, optionally, bears alkyl or aryl substituents; and/or 2) R 1 ″ and R 2 ″ are alkyl groups connected such that they comprise a 3-, 4-, 5-, 6- or 7-membered ring which, optionally, bears alkyl or aryl substituents; iii) R is a C 1 through C 8 alkyl, aryl, heteroaryl, substituted aryl or substituted heteroaryl group; or II) i) W, X, Y and Z are independently hydrogen or C 1 through C 8 alkyl; ii) R 1 ′, R 2 ′, R 1 ″ and R 2 ″ are independently hydrogen or C 1 through C 8 alkyl, and wherein R 1 ′ and Y are connected such that they comprise a five, six or seven-membered ring and/or R 2 ′ and Z are connected such that they comprise a five-, six- or seven-membered ring and/or R 1 ″ and W are connected such that they comprise a five-, six- or seven-membered ring and/or R 2 ″ and X are connected such that they comprise a five-, six- or seven-membered ring: and iii) R is a C 1 through C 8 alkyl, aryl, substituted aryl, heterocyclic or substituted heterocyclic group.