INTRODUCTiON The molecule (C 5 H 5 )Fe(C 5 H 5 ), known as ferrocene, has a sandwich structure where the metal lies between two planer cyclopentadienyl ring (Fig.1) in which the 6π electron system ion C 5 H 5 is bound to the metal ion. http://www.orientjchem.org ISSN: 0970-020 X; CODEN: OJCHEG Oriental Journal of Chemistry 2011, Vol. 27, No. (1): Pg. 135-141 Synthesis of New Ferrocenyl-β-diketone Ligands and Studies on their Complexation with Cu(II), Ni (II) and Zn(II) Metals C.M. ZAKARIA*, M.A. FAROOQUE, M.R. ISLAM and G.T. RAHMAN Department of Chemistry, Rajshahi University, Rajshahi - 6205 (Bangladesh). E-mail: choudhuryzakaria@yahoo.com, tauhid.04.che.ru@gmail.com. (Received: December 05, 2010; Accepted: January 12, 2011) ABSTRACT Ferrocenyl-β-diketone ligands have been synthesised by the reaction of (ferrocenyl methyl) trimethyl ammonium iodide (FcCH 2 N + Me 3 I - ), where Fc=C 5 H 5 FeC 5 H 4 – with sodium salt of -β-diketone [Na + CH - (COR 1 ) (COR 2 ), where R 1 = R 2 =CH 3, R 1 = CH 3 , R 2 =Ph, R 1 = R 2 =CMe 3 ]. The formula of the ligands (1-3) are FcCH 2 CH(COCH 3 )(COCH 3 ), FcCH 2 CH(COCH 3 )(COPh) and FcCH 2 CH(COCMe 3 ) 2 respectively. The work also synthesised some complexes of Cu(II), Ni (II) and Zn(II) by the reaction of ferrocenyl methyl β-diketones with corresponding metal acetate in a mixture of water and dichloromethane (CH 2 Cl 2 ). The formula of the complexes are [Zn{FcCH 2 CH(COCH 3 ) 2 } 2 ], [Cu{FcCH 2 CH(COCH 3 )} 2 ] , [Ni{FcCH 2 CH(COCH 3 )(COPh)} 2 ] and [Cu{FcCH 2 CH(COCH 3 )(COPh)} 2 ] . The ligands and complexes have been characterizied on the basis of infrared spectra, UV-visible spectroscopic studies, Elemental analysis, Magnetic moment, Conductance measurement, Metal estimation, Melting point, NMR spectra and other physical properties. Key words: Ferrocenyl-β-diketone, Complexation and Metals. The rotational freedom of cyclopentadienyl rings in ferrocene was experiment by wood ward 1 . Under the Manich reaction condition first produces a Manich base [CH 2 =N + (CH 2 ) 2 ] and after alkylation produces a quarternary ammonium salt reported 2 . Fig.1