PREPARATION AND X-RAY STRUCTURE OF A NEW [μ2-OXO BRIDGED MACROCYCLIC DICADMIUM(II) COMPLEX

Abstract A new macrocyclic binuclear cadmium(II) complex with pendant arms has been synthesized by the [2+2] Schiff base condensation of tris(3-aminopropyl)amine (trpn) with sodium 2,6-diformyl-4-bromophenolate (sdbp) in the presence of Cd ion. The crystal structure of the complex [Cd2L](C1O4)2 has been determined by X-ray methods. The complex crystallizes in the monoclinic system, space group P21/c with a = 11.922(3), b − 16.207(3), c = 23.229(3) A, μ = 90.94(2)°, V= 4488(2) A3, F(000) − 2352, Z = 4, Dc = 1.75 g cm−3, μ = 28.86 cm−1, R = 0.069, Rw = 0.071. Each Cadmium lies at the centre of a very distorted octahedron composed of two oxygens of bridging phenoxy groups and four nitrogens from trpn. Coordination of phenoxy oxygens enhances the stability of the complex.