New Amine Trithiolate Tripod Ligand and Its Iron(II) and Iron(III) Complexes

68Ga-PET Radiopharmacy: A Generator-Based Alternative to 18F-Radiopharmacy

“…This study allowed to conclude that tetra-and pentadentate ligands can form chelates sufficiently stable so that their biodistribution pattern is determined by the Ga(III)-complex itself and not by the exchange of gallium to pro- Table 1. Equilibrium constants for In 3+ and Ga 3+ complexes of various chelators (Anderson et al 1995;Clarke and Martell 1991;Harris and Martell 1976;Ma et al 1995;Sun et al 1996) (Govindasvamy et al 1995) is a neutral lipophilic species which passes the blood-brain barrier and exhibits a high heart-to-blood ratio. This is a chelate that even in the presence of water retains its tetrahedral geometry.…”

Structural Evaluation and Antibacterial Sensitivity of Iron (III) Complexes of 4-<i>n</i>-hexyloxybenzoylhydrazine with Some Aliphatic and Aromatic

“…The ground state of high spin octahedral Fe(III) complexes is 6 A 1g . The four lowest energy bands are due to the transition from 6 A 1g to 4 T 1g , 4 T 2g , E g levels. These bands possibly arise from an admixture of spin quartet character to the ground state through spin-orbital coupling.…”

“…A variety of enzymes are able to catalyze different reactions such as oxidation, reduction and isomerization containing iron bound to porphyrin [1,2]. Several non-heme iron (III) complexes with mixed nitrogen sulfur coordination sphere have been reported [3][4][5][6]. One of the main objectives of their synthesis was to build chemical models of iron containing nitrile hydratases.…”

Effective Synthesis of ortho‐Substituted Trithiophenol Amines by Miyazaki–Newman–Kwart Rearrangement

“…Inspired by the trigonal FeS 3 coordination sites present in the FeMo-cofactor of nitrogenase, TTA (R = H) was first synthesized by Koch et al and used for the preparation of the corresponding iron(II) and iron(III) complexes. [6] More recently, gallium(III) and indium(III) complexes have been obtained, which show interesting applications in radiolabelling. [7] Although extensive theoretical studies have been carried out on TTA (R = H) complexes with iron, [8] ortho-substituted TTA derivatives and their coordination chemistry with different metals have not been intensively investigated.…”

“…Moreover, whereas the reported synthesis for TTA requires a multistep synthetic sequence, [6,7] this approach offers an easy modular synthesis. Furthermore, the opportunity for introducing groups in the ortho position will expand the knowledge of the coordination chemistry of TTAs and offer new applications in metal complexation and catalysis.…”