Abstract
A Cd(II) based metal-organic framework (MOF) Cd-3(cis-muco)(3)(2,2'-bpy)(2) (1); (H(2)cis-muco = cis, cis-muconic acid and 2,2'-bpy = 2,2'-bipyridine) has been synthesized by slow diffusion method in a single pot technique. Single crystal X-ray analysis reveals that compound 1 crystallizes in the monoclinic system, space group C2/c with a = 27.3596(14) angstrom, b = 8.2557(4) angstrom, c = 17.7167(9) angstrom, beta = 109.8670(10)degrees and V = 3763.6(3) angstrom(3). Interestingly, compound 1 consists of trinuclear linear Cd-3 secondary building units (SBUs), which are connected through cis,cis-muco ligands to give rise to a two-dimensional (2D) Shubnikov (3,6) plane net topology with Schlafli symbol 3(6)4(6)5(3). Due to the presence of hydrogen bonding and pi center dot center dot center dot pi interactions, 2D structures further assemble to produce a three-dimensional (3D) architecture. The extent of non-covalent interactions in crystal packing was investigated using Hirshfeld surface analysis. Photoluminescence spectra of the prepared compound 1 have also been obtained. The resulting compound was found to display bathocromic shifts, which can contribute towards making of a suitable luminescent probe.