Chemistry is an experimental science, category: catalyst-ligand, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 128143-88-4, Name is [2,2′:6′,2”-Terpyridin]-4′(1’H)-one
Compound [Co(4-terpyridone)2](CF3SO3) 2·1H2O, where 4-terpyridone is 2,6-bis(2-pyridyl)- 4(1H)-pyridone, forms two polymorphs. Polymorph 1 displays a continuous spin conversion in the temperature region 300-120 K while polymorph 2 shows, on cooling, the onset of a continuous high-spin (HS) to low-spin (LS) conversion interrupted by an abrupt “reverse” spin transition in the temperature region 217-203 K. The formed unstable HS intermediate phase (IP) undergoes a strong cooperative “normal” spin transition characterised by a hysteresis loop 33 K wide. The structural data give support for a crystallographic phase transition, which takes place concomitantly with the “reverse” spin state transition. copy; The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. category: catalyst-ligand, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 128143-88-4, in my other articles.
Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI