Template synthesis of 2,11-dimethyl-3,12-diethyl/propyl/phenyl-1,4,10,13-tetraazacyclooctadeca-1,3,10,12-tetraene complexes of Mg(II), Ca(II), Sr(II) and Ba(II)

摘要

2+2 Cyclocondensation of 1,5-diatninopentane with beta diketones viz. 2,3-pentanedione, 2,3-hexanedione or 1-phenyl-1,2-propanedione in the presence of alkaline earth metal ions as templates yield a series of hexacoordinated complexes of the type [ML(X-2)] (where L=N-4 macrocyle having 18-membered ring and X=Cl or NCS) The resulting complexes have been characterized by elemental analyses, conductance measurements, IR and H-1 NMR spectra.