1423876-11-2Relevant articles and documents
Ligand displacement for fixing manganese: Relevance to cellular metal ion transport and synthesis of polymeric coordination complexes
Sanchez-Ballester, Noelia M.,Shrestha, Lok Kumar,Elsegood, Mark R. J.,Schmitt, Wolfgang,Ariga, Katsuhiko,Anson, Christopher E.,Hill, Jonathan P.,Powell, Annie K.
, p. 2779 - 2785 (2013)
A dinuclear manganese(iii) complex (1) of an N-(carboxymethyl)-N-[3,5- bis(α,α-dimethylbenzyl-2-hydroxybenzyl)]glycine (HDA) ligand (L) binds a manganese(ii) species through displacement of its solvating ligands by appropriately dispositioned carbonyl groups of a dinuclear complex {[Mn 2(L)2(OH)(OCH3)][Mn(H2O) 3(CH3OH)3], 2, triclinic P1, a = 13.172(3) A?, b = 15.897(3) A?, c = 19.059(4) A?, V = 3461.9(13) A?3} leading to a trinuclear complex {3, monoclinic P21/n, a = 11.7606(8) A?, b = 21.3505(8) A?, c = 26.7827(17) A?, V = 6722.7(7) A?3} with cyclization of two of the carboxy groups through the doubly-carboxy group coordinated Mn2+ ion. The reaction is discussed in terms of its significance as an illustration of how Mn 2+ ions might be sequestered in biological systems. A similar solvato-ligand displacement reaction was used to synthesise coordination polymers of an HDA iron(iii) complex involving polymerization through a bridging carboxylato group. Several isostructural polymers (5-7; for 5: orthorhombic Pbca, a = 9.411(5) A?, b = 16.390(8) A?, c = 37.968(19) A?, V = 5856(5) A?3) with different coordinated alcohols could be prepared indicating the potential synthetic uses of this method.