New phosphonates containing a π-conjugated ferrocenyl unit

New Journal of Chemistry Pub Date: 2001-01-23 DOI: 10.1039/B008937K

Abstract

A new class of phosphorus compounds containing a ferrocenyl unit are obtained from vinylferrocene and phosphono-substituted aromatic halides by using palladium-catalyzed Heck-type reactions. The crystal structure of compound 3a confirms the trans planar geometry of the π-conjugated system. The electrochemistry and electronic absorption spectra of phosphorus esters 3a,b and acids 4a,b are investigated.

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