Formula: C7H5N3O2SIn 2021, Mikherdov, Alexander S.;Popov, Roman A.;Kinzhalov, Mikhail A.;Haukka, Matti;Polukeev, Valeriy A.;Boyarskiy, Vadim P.;Roodt, Andreas published 《Reaction mechanism of regioisomerization in binuclear (diaminocarbene)PdII complexes》. 《Inorganica Chimica Acta》published the findings. The article contains the following contents:
A series of binuclear PdII carbene complexes were synthesized via the treatment of cis-[PdCl2(CNXyl)2] (1) with benzo-1,3-thiazol-2-amines (2–6) and structurally characterized. In every case the reaction leads to the mixture of two regioisomers, which are able to interconvert. The study of the regioisomerization of the binuclear diaminocarbene species showed that it is a first-order reaction, i.e., it occurs intramolecularly, and was analyzed with the Hammett function. Electron-withdrawing substituents in the benzothiazole moiety of the complexes as well as increasing the solvent polarity accelerate the reaction. The solvent donor strength correlates less well with the isomerization rates. Based on the obtained activation parameters the studied regioisomerization could be defined as the interchange/dissociative process type. A combined approach including kinetic and mass spectrometric studies allowed the conclusion that the rate-determining step of the isomerization is breaking the carbon-nitrogen bond in the carbene fragment of the binuclear complex. The experimental procedure involved many compounds, such as 6-Nitrobenzo[d]thiazol-2-amine (cas: 6285-57-0) .
6-Nitrobenzo[d]thiazol-2-amine(cas:6285-57-0 Formula: C7H5N3O2S) is an antimicrobial agent that inhibits bacterial growth by cleaving the peptide bonds of proteins. It has been shown to be active against a number of microorganisms, including Gram-positive and Gram-negative bacteria, as well as fungi.
Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica