Effects of two different solvents on the syntheses, structural diversity, and magnetic properties of six Mn(ii) complexes derived from 3,3′-((5-carboxy-1,3-phenylene)bis(oxy))dibenzoate and variable N-donor ligands†
Abstract
Based on MnSO4 and 3,3′-((5-carboxy-1,3-phenylene)bis(oxy))dibenzoic acid (H3cpboda), six coordination polymers (CPs), {[Mn3(cpboda)2(H2O)4(DMF)2]·4DMF·5H2O}n (1), {[Mn2(cpboda)(1,4-bib)0.5(HCOO)(H2O)]n·DMF}n (2), {[Mn3(cpboda)2(phen)2(H2O)2]·2DMF·3H2O}n (3), {[Mn(H2cpboda)2(1,4-bib)3(H2O)2]·8H2O}n (4), {[Mn3(cpboda)2(phen)3(H2O)2]·4H2O}n (5), and [Mn(Hcpboda)(2,2-bipy)(H2O)]n (6) (1,4-bib = 1,4-di(1H-imidazol-1-yl)benzene, phen = 1,10-phenanthroline, 2,2-bipy = 2,2-bipyridine) were synthesized by using two different solvent systems under solvothermal conditions. They were determined by single-crystal X-ray diffraction analyses, IR spectroscopy, elemental analyses (EAs), X-ray powder diffraction analyses (PXRD) and thermogravimetric analyses (TGAs). Complexes 1 and 3 are 2D frameworks with a point symbol of (32·4)2(32·83·9)2(34·42·82·94·103) based on linear trinuclear manganese [Mn3(μ1,1-OH2)2(μ1,3-COO)6] subunits. Complex 2 exhibits a 3D (3-c)(5-c)-coordinated framework with a point symbol of (3·4·5)(32·4·5·62·74). Complex 4 exhibits a 2D porous network with a (44·62) topology. Complex 5 exhibits an interesting 2D framework with a trinodal 3,6-connected (43)2(46·66·83) topology and complex 6 shows a 0D network, which is further assembled into a 1D supramolecular structure via O–H⋯O interactions. The magnetization analyses disclose the anti-ferromagnetic (AF) behaviors between Mn(II) ions in complexes 1–6.
Please wait while we load your content...
