Redox-Noninnocent Behavior of Tris(2-pyridylmethyl)amine Bound to a Lewis Acidic Rh(III) Ion Induced by C–H Deprotonation
摘要:
Rh(III) complexes having tris(2-pyridylmethyl)amine (TPA) and its derivative as tetradentate ligands showed reversible deprotonation at a methylene moiety of the TPA ligands upon addition of a strong base as confirmed by spectroscopic measurements and X-ray crystallography. Deprotonation selectively occurred at the axial methylene moiety rather than equatorial counterparts because of the thermodynamic stability of corresponding deprotonated complexes. One-electron oxidation of the deprotonated Rh(III) TPA complex afforded a unique TPA radical bound to the Rh(III) center by a ligand-centered oxidation. This is the first example to demonstrate emergence of the redox-noninnocent character of the TPA ligand.
[EN] COMPOUNDS FOR SEPARATION OF RARE EARTH ELEMENTS AND S-, P-, D- METALS, METHOD OF SEPARATION, AND USE THEREOF<br/>[FR] COMPOSÉS POUR LA SÉPARATION D'ÉLÉMENTS DE TERRES RARES ET DE MÉTAUX S-, P-, D-, PROCÉDÉ DE SÉPARATION ET UTILISATION DE CEUX-CI
申请人:USTAV ORGANICKE CHEMIE A BIOCHEMIE AV CR V V I
公开号:WO2019106182A1
公开(公告)日:2019-06-06
The present invention relates to compounds of general formula (I) for chromatographic separation of rare earth elements and/or s-, p-, d- metals, as well as to the method of the separation of rare earth elements.
本发明涉及通式(I)化合物,用于稀土元素和/或s、p、d金属的色谱分离,以及稀土元素分离方法。
Delivering aminopyridine ligands into cancer cells through conjugation to the cell-penetrating peptide BP16
Peptide conjugates incorporating the N-based ligands Me2PyTACN or (S,S′)-BPBP at the N- or the C-terminus of the cell-penetrating peptide BP16 were synthesized (PyTACN–BP16 (BP341), BP16-PyTACN (BP342), BPBP–BP16 (BP343), and BP16-BPBP (BP344)). Metal binding peptides bearing at the N-terminus the ligand, an additional Lys and a β-Ala were also prepared (PyTACN-βAK–BP16 (BP345) and BPBP-βAK–BP16 (BP346))
Synthetic Models of the Active Site of Cytochromec Oxidase: Influence of Tridentate or Tetradentate Copper Chelates Bearing a HisTyr Linkage Mimic on Dioxygen Adduct Formation by Heme/Cu Complexes
作者:Jin-Gang Liu、Yoshinori Naruta、Fumito Tani
DOI:10.1002/chem.200601884
日期:2007.7.27
active site of cytochrome c oxidase--[(LN4-OH)CuI-FeII(TMP)]+ (1 a) and [(LN3-OH)CuI-FeII(TMP)]+ (2 a)-have been designed and synthesized. These models each contain a heme and a covalently attached copper moiety supported either by a tetradentate N4-copper chelate or by a tridentate N3-copper chelate including a moiety that acts as a mimic of the crosslinked His-Tyr component of cytochrome c oxidase
COMPOUNDS FOR SEPARATION OF RARE EARTH ELEMENTS AND S-, P-, D- METALS, METHOD OF SEPARATION, AND USE THEREOF
申请人:Ustav Organicke Chemie a Biochemie AV CR, v.v.i.
公开号:EP3717466A1
公开(公告)日:2020-10-07
Redox-Noninnocent Behavior of Tris(2-pyridylmethyl)amine Bound to a Lewis Acidic Rh(III) Ion Induced by C–H Deprotonation
作者:Hiroaki Kotani、Takumi Sugiyama、Tomoya Ishizuka、Yoshihito Shiota、Kazunari Yoshizawa、Takahiko Kojima
DOI:10.1021/jacs.5b06237
日期:2015.9.9
Rh(III) complexes having tris(2-pyridylmethyl)amine (TPA) and its derivative as tetradentate ligands showed reversible deprotonation at a methylene moiety of the TPA ligands upon addition of a strong base as confirmed by spectroscopic measurements and X-ray crystallography. Deprotonation selectively occurred at the axial methylene moiety rather than equatorial counterparts because of the thermodynamic stability of corresponding deprotonated complexes. One-electron oxidation of the deprotonated Rh(III) TPA complex afforded a unique TPA radical bound to the Rh(III) center by a ligand-centered oxidation. This is the first example to demonstrate emergence of the redox-noninnocent character of the TPA ligand.