Diaqua[N,N'-bis(5-methoxysalicylidene)ethylenediaminato-kappa(4)O,N,N',O']manganese(III) perchlorate, aqua[N,N'-bis(3,5-dichlorosalicylidene)ethylenediaminato-kappa4O,N,N',O'](methanol-kappaO)manganese(III) perchlorate and bis[mu-N,N'-bis(3-methoxysalicylidene)ethylenediaminato-kappa5O,N,N',O':O]bis[(methanol-kappaO)manganese(III)] diperchlorate.
The title compounds, a hydrogen-bonded linear chain, [Mn(C18H18N2O4)(H2O)2]ClO4, (I), a hydrogen-bonded pseudo-dimer, [Mn(C16H10Cl4N2O2)(CH4O)(H2O)]ClO4, (II), and a dimer, [Mn2(C18H18N2O4)2(CH4O)2](ClO4)2, (III), respectively, have been structurally characterized. The three complexes are completely different in their structural features, despite identical counter-anions and only slight modification of the substituents in the ligands. Complex (I) affords an elongated octahedral coordination environment, with axial Mn-O(water) distances of 2.259 (3) and 2.313 (3) A, which forms hydrogen-bonded linear chains along the crystallographic c axis. Hydrogen-bonded pseudo-dimeric compound (II) also affords an elongated octahedral coordination environment, with axial Mn-O(CH3OH) = 2.222 (3) A and Mn-O(water) = 2.266 (3) A. Dimeric complex (III) is centrosymmetric and consists of distorted octahedral Mn atoms, with axial Mn-O(CH3OH) = 2.242 (2) A and Mn-O(phenolate) = 2.348 (1) A, connected via bridging O atoms from one of the ligands. The magnetic properties of the three complexes are described.
Akitsu
Takashiro
T
Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan. akitsu@chem.keio.ac.jp
Takeuchi
Yuiri
Y
Einaga
Yasuaki
Y