Syntheses and characterization of two novel 1D Pb(II) Halide supramolecular polymers possessing incomplete Cubane subunit directed by π-conjugated Dication templates

Abstract

Two novel cation-templated complexes, {(1, 4-PMBP)[Pb4I10] ⋅DMF}n(1) {(DBBP)2[Pb5I8Br6]}n(2), (1,4-PMBP ⋅2Br =1,1”-[1,4-phenylene-bis(methylene)]bis-4,4’-bipyridinium dibromide; DBBP ⋅2Br = N, N’-dibenzyl- 4, 4’-bipyridinium dibromide) have been synthesized via the self-assembly reaction in solution. X-ray crystallography showed that compounds 1 and 2 can be regarded as 1D iodoplumbate examples which contain incomplete cubane subunit directed by π-conjugated dication templates. It is the H-bonds and electrostatic interactions between the organic counter cations and inorganic moieties that contribute the crystal packing. These compounds have been further characterized by IR spectroscopy, UV-Vis spectra, elemental analysis and thermostability properties. We report two novel 1D iodoplumbate supramolecular polymers which contain incomplete cubane subunit based on л-conjugated dication templates. These compounds have been further characterized by IR, UV–Vis spectra, elemental analysis and thermostability tests.