Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Electric Literature of 1111-67-7. In my other articles, you can also check out more blogs about 1111-67-7
Electric Literature of 1111-67-7, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Article, and a compound is mentioned, 1111-67-7, Cuprous thiocyanate, introducing its new discovery.
Linear and cyclic tetranuclear copper(I) complexes containing anions of N,N?-bis(pyrimidine-2-yl)formamidine
The reaction of Kpmf (pmf = anion of N,N?-bis(pyrimidyl-2-yl) formamidine, Hpmf) with CuSCN afforded the complexes K[Cu4(pmF) 3(SCN)2], 1, and Cu4(pmf)4, 2. Reaction of 1 with [(n-Bu)4N]PF6 in THF gave the complex [(n-Bu)4N][Cu4(pmf)3(SCN)2], 3. Their structures were characterized by X-ray crystallography. Complexes 1 and 3 are the first linear tetranuclear complexes containing only Cu(I) atoms, while complex 2 is cyclic. The four Cu(I) atoms of complexes 1 and 3 are helically bridged by three tetradentate pmf- ligands. The [Cu 4(pmf)3(SCN)2]- anions of 1 show weak interactions with adjacent [K(THF)5]+ cations through the sulfur atoms, forming infinite chains which are subjected to a series of intermolecular pi-pi interactions. In complex 2, the pmf- ligands are coordinated to the copper atoms in bidentate fashion through the two central amine nitrogen atoms, leaving the pyrimidine nitrogen atoms uncoordinated. Unexpected fluxional behaviors were observed for complexes 1 and 3 in solution. By the DNMR analysis, the free energy of activation (DeltaGc?) for the exchange is 12.8 kcal mol-1 at 278 K (Tc), and the rate constant of exchange (Kc) is 470 s-1 for 1. The DeltaGc? and Kc are 12.6 kcal mol-1 at 273 K and 433 s-1, respectively, for 3. The Royal Society of Chemistry 2005.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Electric Literature of 1111-67-7. In my other articles, you can also check out more blogs about 1111-67-7
Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”