Applications of tripodal [S3] and [Se3] L2X donor ligands to zinc, cadmium and mercury chemistry: organometallic and bioinorganic perspectives

Abstract

The tripodal tris (2-mercapto-1-R-imidazolyl)

Synthesis and Characterization of Sterically Congested Mesityltris(imidazolium) Salts and the Corresponding Highly Crystalline Tris-selone Derivatives

“…[13,25] Imidazole selones, as pecial class of heteroketones, have gained increasing interest in recenty ears as efficient ligating agents in lieu of traditional N-heterocyclic carbenes. In fact, mono-and bis-imidazole selones have been extensively used to generate transitionmetal-based complexes [26][27][28][29][30][31][32][33][34][35][36][37][38] and have furtherb een employed in versatile catalytic applications, such as polymerization [39] and the reduction of nitrobenzenes. [40] Moreover,s uch selenoketones have been used as inhibitors of lactoperoxidase-catalyzed oxidation and tyrosine nitration, [41][42][43] as an analogue of the antithyroidd rug methimazole, [44][45][46] in optoelectronics, [47] as chemicals ensors, [48] and also as ac hemical tool for Pd II extraction from water.…”

Gallium and indium compounds supported by a [PNP] pincer ligand

“…2. 3 The lithium derivative [MePNP Ph ]Li(THF) 2 may be obtained by deprotonation of [MePNP Ph ]H with Bu n Li in THF (Scheme 1) and the molecular structure as determined by X-ray diffraction is illustrated in Fig. 3, thereby revealing that the geometry is a distorted trigonal bipyramid.…”

Synthetic Bioinorganic Chemistry: Scorpionates Turn 50

“…3). In addition, related ligands based on carbene [34,35], phosphine [36,37], thioether [38], thione [39][40][41], and selone [39] donor moieties have been studied during the past 20 years or so and will be discussed in more detail below (Fig. 4).…”

“…Whereas coordinated Tp 2 M eight-membered rings. The coordination chemistry of Tm R ligands has been reviewed [39][40][41] and includes the preparation of synthetic analogues for the active sites in various known sulfur-rich metalloenzymes [123]. For example, the first structurally characterized zinc hydroxide complex supported by a tridentate sulfur ligand, (Tm Ph )ZnOH, was prepared as a structural model for the zinc-containing enzyme 5-aminolevulinate dehydratase (ALAD) [124].…”