Alkaline earth metal complexes of 17-membered oxa-azamacrocycles derived from a-diketones and 1, 13-diamino-4, 7, 10-trioxatridecane

Department of Chemistry, University of Rajasthan, Jaipur-302 055, Rajasthan, India E-mail : rnp _1949@yahoo.co.in Manuscript received 13 July 2010, revised 07 April 2011, accepted 20 April 2011 1 + 1 Cyclocondensation or 1,13-diamino-4,7,10-trioxatridecane with a-diketones such as 2,3-butanedione, 2,3-pentanedione, 2,3-hexanedione and 3,4-hexanedione in tbe presence of Mg2, Ca2+, Sr2+ and Ba2+ ions as templates yields a series of complexes or the type [MLX]X (where M = MgII, X = CJ·; M = caII, SrII and BaII, X = NCS·; L = N2o3 type macrocycle having 17-membered ring). The resulting complexes have been characterized by elemental analyses, conductance measuruements and IR, 1H NMR and FAB mass spectral studies