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Chloride as Supramolecular Glue: Anion‐Directed Assembly of a 2D Network of Mn III Complexes
Author(s) -
Bermejo Manuel R.,
Fernández M. Isabel,
GonzálezNoya Ana M.,
Maneiro Marcelino,
Pedrido Rosa,
Rodríguez M. Jesús,
Vázquez Miguel
Publication year - 2004
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200400041
Subject(s) - chemistry , supramolecular chemistry , schiff base , crystallography , cationic polymerization , hydrogen bond , monomer , counterion , crystal structure , chloride , manganese , octahedral molecular geometry , inorganic chemistry , molecule , ion , polymer chemistry , polymer , organic chemistry
The Schiff base H 4 L [where H 4 L = N , N ′‐bis(3‐hydroxysalicylidene)ethane‐1,2‐diamine], containing six potential donor atoms, is able to induce the formation of a novel [Mn III (H 2 L)(CH 3 OH) 2 ]Cl ( 1 ) complex, which was characterized by elemental analysis, FAB mass spectrometry, IR, 1 H NMR and electronic spectroscopy, magnetic measurements, X‐ray diffraction techniques and conductivity measurements. The study of its redox properties by cyclic and normal pulse voltammetry is also reported. The crystal structure of 1 is formed by monomeric cationic Mn III complexes, where the manganese ion is in an octahedral environment and is coordinated in the equatorial plane to the N 2 O 2 donor set of the inner Schiff‐base compartment. The neutral condition of the complex is achieved with the presence of the chloride counterion, which behaves as a multiple acceptor of hydrogen bonds. The chloride is involved in four O−H ··· Cl bonds, connecting three neighbouring cationic complexes. To the best of our knowledge, this constitutes the first example of self‐assembly of discrete units of Mn III complexes in a 2D network in the solid state through hydrogen bonding, where the anion is acting as a supramolecular glue. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)