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Self‐Assembly of Manganese(II)–Phytate Coordination Polymers: Synthesis, Crystal Structure, and Physicochemical Properties
Author(s) -
Quiñone Delfina,
Veiga Nicolás,
Torres Julia,
Bazzicalupi Carla,
Bianchi Antonio,
Kremer Carlos
Publication year - 2017
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201700027
Subject(s) - manganese , crystal structure , polymer , coordination complex , chemistry , coordination polymer , inorganic chemistry , polymer chemistry , combinatorial chemistry , organic chemistry , materials science , metal
myo ‐Inositol phosphates are an important group of biomolecules that are present in all eukaryotic cells. The most abundant member of this family in nature is Ins P 6 (phytate, L 12− in its fully deprotonated form). Phytate interacts strongly with inorganic and organic cations, and this interaction is essential for determining the possible functions of this biomolecule. Herein, the chemical, thermodynamic, and structural characterization of phytate–Mn II species is presented in a study aimed at understanding how the interaction of the two components modulates their biological roles and their bioavailability. Polynuclear complexes Mn 5 (H 2 L)⋅16 H 2 O ( 1 ) and (H 2 terpy) 2 [Mn(H 6 L)(terpy)(H 2 O)]⋅17 H 2 O (terpy=terpyridine) ( 2 ) were prepared and characterized by different techniques. The isolation of 1 and the determination of its solubility, together with potentiometric titrations of the Mn II –phytate system, allow the full description of this binary system. The preparation and crystal structure of 2 show a novel coordination mode of phytate, that is, the formation of infinite polymeric chains through equatorial phosphate groups.