Abstract

Infrared and photoacoustic spectroscopies have in combination produced useful information about an immobilized β-diketone, formed by the reaction of acetylacetone with <i>p</i>-chloromethyl-phenyltrimethoxysilane previously immobilized on silica. Evidence confirming the synthesis of immobilized 3-benzyl-2,4-pentanedione is presented. Comparisons with 3-benzyl-2,4-pentanedione, a model for the surface bonded ligand, were valuable. The bound β-diketone is largely in the keto tautomer on the surface. The photoacoustic spectrum shows that the remainder is in the form of an intermolecular hydrogen-bonded enol. In basic solution the enolate ion and metal-enolate complexes can be formed. Infrared spectra show that the keto form can bind metals in acidic solutions.

PDF Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription