Friday, July 11, 2014

Why Is Lithium Aluminium Hydride A Better Reducing Agent Than Sodium Boro Hydride?

Both Lithium Aluminium Hydride(Li[AlH4]) and Sodium Boro Hydride(Na[BH4]) are co-ordination complexes.  They serve as reducing agents by releasing the hydride(H-) ions from their respective co-ordination spheres.

 The central atoms in both the cases, namely, Al & B, belong to Group - IIIA of the periodic table.  As we know that electro positive character increases upon going down a group in the periodic table, aluminium(Al) is more electro positive than boron(B).  Hence, by virtue of greater electro positive character, Al easily releases the H- ions that are bonded to it than B. 

Thus, Li[AlH4] serves as a better reducing agent for organic compounds than Na[BH4]

Historia de Silapathikaram - Una Epopeya Famosa del Idioma Tamil

  Fecha: 27 de Julio 2022 Soy una mujer de India que es una hablante de Tamil, el idioma muy antiguo.  La mayoria de los hablantes de Tamil ...