Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media, causing turnover rates to depend strongly on interfacial structure and composition, 5469-69-2, Name is 3-Amino-6-chloropyridazine, SMILES is C1=C(N=NC(=C1)Cl)N, in an article , author is Mondal, Avijit, once mentioned of 5469-69-2, SDS of cas: 5469-69-2.
Why lithiation results large enhancement of second hyperpolarizability of delta shaped complexes M-C2H2 (M = Be, Mg and Ca)?
Lithiation of M-C2H2 results significant enhancement of second-hyperpolarizability. The negatively polarized pi-surface of C2Li2 raises the molecular orbital energies which strongly favours both metal-HOMO to ligand-LUMO and ligand-HOMO to metal-LUMO charge transfer interactions. Due to the push electron effect by C2Li2 , the outermost ‘ns’ orbital of alkaline earth metal cannot induce charge transfer instead forms the excess diffuse electron density localized over the alkaline earth metal. Calculated vertical ionization energy of M-C2Li2 complexes are smaller than the corresponding isolated metals. CCSD calculated static and dynamic second-hyperpolarizabilities of M-C2Li2 complexes are many times larger than that of the corresponding M-C2H2 complexes.
But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 5469-69-2, you can contact me at any time and look forward to more communication. SDS of cas: 5469-69-2.
Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem