A ferrocene tagged novel organic moiety Synthesis, crystal structure and electrochemical aspects

Department of Chemistry, Jadavpur University, Kolkata-700 032, India E-mail: jpnaskar@hotmail.com Fax : 91-33-24146223 Kalikamala Vidyapith for Girls, 124, Raja R .L. Mitra Road, Kolkata-700 010, India School of Chemistry, University of St. Andrews, Fife, KY16 9ST, UK lndian Chemical Society, 92, Acharya Prafulla Chandra Road, Kolkata-700 009, India E-mail: hllrahul@yahoo.com Manuscript received 26 November 2009, revised 28 January 2010, accepted 19 March 2010 Reaction of 2-(2-aminoethyl)pyridine (L) with ferrocenecarboxaldehyde (FCAL) in toluene gives rise to LH, the 1 : 1 Schiff base condensate of L and FCAL. Reduction of LH with NaBH4 in methanol and subsequent protonation with stoichiometric proportion of hydrochloric acid enables to isolate the ferrocene bearing organometallic moiety, [LH2]Cl.H2O. Replacement of the counter anion, chloride, by hexafluorophosphate in acetone afforded the target ferrocene appended organometallic precursor, [LH2]PF6.H2O with satisfactory yield. [LH2]PF6.H2O is characterized by C, H and N microanalyses, FT-IR, 1H NMR and ESI-MS and cyclic voltammetry. The X-ray crystal structure of it has also been determined. The structure reveals that It is centrosymmetric (space group P21/c)