14641-64-6Relevant academic research and scientific papers
Structure and stability of H+ associates of (5,10,15,20- tetraphenylporphinato)silver(II) in trifluoroacetic acid
Bichan,Tyulyaeva,Lomova
, p. 1345 - 1350 (2014)
Direct experimental confirmation of the formation of ion-molecular associates of (5,10,15,20-tetraphenyl-21H,23H-porphinato)silver(II) (AgTPP) with solvent protons in CF3COOH is obtained by means of 1H NMR spectroscopy. Their structure and spectral properties, as well as the kinetics of dissociation on metal-nitrogen bonds, depending on the concentration of CF3COOH (89-100%) and temperature (298-328 K), are studied It is shown that AgTPP acts as a C-base during the formation of H+ associates, the coordination centers of which have a high stability.
Observations on the Mechanochemical Insertion of Zinc(II), Copper(II), Magnesium(II), and Select Other Metal(II) Ions into Porphyrins
Atoyebi, Adewole O.,Brückner, Christian
supporting information, p. 9631 - 9642 (2019/03/26)
Building on a proof of concept study that showed the possibility of the mechanochemical insertion of some M(II) metals into meso-tetraphenylporphyrin using a ball mill as an alternative to traditional solution-based methods, we present here a detailed study of the influence of the many experimental variables on the reaction outcome performed in a planetary mill. Using primarily the mechanochemical zinc, copper, and magnesium insertion reactions, the scope and limits of the type of porphyrins (electron-rich or electron-poor meso-tetraarylporphyrins, synthetic or naturally occurring octaalkylporphyrins, and meso-triphenylcorrole) and metal ion sources suitable for this metal insertion modality were determined. We demonstrate the influence of the experimental metal insertion parameters, such as ball mill speed and reaction time, and investigated the often surprising roles of a variety of grinding agents. Also, the mechanochemical reaction conditions that remove zinc from a zinc porphyrin complex or exchange it for copper were studied. Using some standardized conditions, we also screened the feasibility of a number of other metal(II) insertion reactions (VO, Ni, Fe, Co, Ag, Cd, Pd, Pt, Pb). The underlying factors determining the rates of the insertion reactions were found to be complex and not always readily predictable. Some findings of fundamental significance for the mechanistic understanding of the mechanochemical insertion of metal ions into porphyrins are highlighted. Particularly the mechanochemical insertion of Mg(II) is a mild alternative to established solution methods. The work provides a baseline from which the practitioner may start to evaluate the mechanochemical metal insertion into porphyrins using a planetary ball mill.
Synthesis of Ag(II) 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-Tetraphenylporphyrin and its facile demetalation to 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-Tetraphenylporphyrin
Ravindran, Sasitha Vidyarini,Pennathur, Anuj Krishnasundar,Nandhini Devi,Pennathur, Gautam
, p. 656 - 661 (2016/07/11)
A novel one-step strategy for the synthesis of 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-Tetraphenylporphyrin using AgIIOBP is described. AgIIOBP was synthesized and was. Bromination of AgIITPP was carried out in a one-step reaction by varying the subseque
Dual facet of gold(iii) in the reactions of gold(iii) and porphyrins
Lv, Hongbin,Yang, Boyan,Jing, Jing,Yu, Yi,Zhang, Jing,Zhang, Jun-Long
supporting information; experimental part, p. 3116 - 3118 (2012/04/10)
We have firstly demonstrated the dual facet of gold(iii) in the reaction between gold(iii) and porphyrins, which could be tuned through changing the counter ions, ligands and the electronic effect of the substituents of the porphyrins. The Royal Society o
