Muconato-bridged Mn coordination polymer exhibiting rare distorted-trigonal prismatic coordination geometry

Abstract

Novel poly[Mn(H2O)(dmb)(muco)] (1) (H2muco = trans,trans-muconic acid; dmb = 5,5 -dimethyl-2,2 -bipyridine) was obtained by self-assembly, one-pot, solution reaction. 1 crystallizes in a monoclinic system with P21 space group and forms an infinite onedimensional (1D) polymer. Remarkably, the six-coordinate MnII display a rare distorted trigonal prismatic configuration. This unusual co-ordination arrangement appears to be acquired due to the supramolecular interactions of the polymeric structure of 1, mainly throughout hydrogen bonding, giving rise to a 2D framework. Magnetic properties measurements reveal that 1 possesses weak antiferromagnetic interactions with θ(C–W) = –1.0 K and J = 458 cm–1.