Abstract
Two trinuclear zinc(II) compounds of the type [Zn 3(μ 3-CO 3)(L) 3](X) 4 [L = N, N′-bis(3-aminopropyl)-1,2-ethanediamine; X = ClO 4 ( 1), PF 6 ( 2)] have been prepared by reactions of 1:1 molar ratio of zinc(II) salt and L in open air at room temperature using appropriate counter anions. The compounds are characterized by microanalytical, spectroscopic, thermal and other physicochemical properties. Structures of 1 and 2 are solved by single crystal X-ray diffraction measurements. Structural study reveals that a μ 3-carbonate binds three zinc(II) centers; each metal center in 1/ 2 adopts a distorted trigonal bipyramidal geometry with a ZnN 4O chromophore bound by four N atoms of the tetradentate amine (L) and one O atom of carbonate. The trinuclear units in 1/ 2 are engaged in N–H⋯O/N–H⋯F and C–H⋯F hydrogen bondings leading to different 3D network structures.
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