Mono-, di- and trinuclear complexes of bis(terpyridine) ligand: Synthesis, crystal structures and magnetic properties
摘要:
Application of Stille-coupling protocol allowed for synthesis of new bis(terpyridine) ligand L (6',6 ''-(2-phenylpyrimidine-4,6-diyl)bis(6-methyl-2,2'-bipyridine)) which comprises two tridentate N-donor subunits, designed so as to exploit the formation of supramolecular architectures of different nuclearity. Further complexation, while maintaining reaction parameters unaltered, with the following salts: CoCl2 (1), Co(NO3)(2) (2), Cu(NO3)(2) (3) and Mn(ClO4)(2) (4) led to three different classes of compounds: mono-, di- and trinuclear species, the result of self-assembly being contingent on the choice of the metal ion as well as to its corresponding counterion. Single crystal structures of [Co(L)Cl-2] (1), [Co-2(L)(NO3)(4)](CH3CN)(2) (2), [Cu-2(L)(NO3)(4)](CH3CN)(2) (3) and [Mn-3(L)(2)(H2O)(2)(CH3CN)(4)](ClO4)(6)center dot 2H(2)O (4) are presented, together with description of their magnetic behavior. Delusively simple coordination compounds were found to self-assemble into interesting supramolecular architectures in the solid state: 1D pillar-like constituent arranged in the helical manner (1), sheets of isostructural 2 and 3, hydrogen bonded zig-zag shaped chains (4). Magnetic susceptibility measurements made the determination of both antiferromagnetic interactions and metal ions' multiplicity possible. (C) 2013 Elsevier Ltd. All rights reserved.
Mono-, di- and trinuclear complexes of bis(terpyridine) ligand: Synthesis, crystal structures and magnetic properties
摘要:
Application of Stille-coupling protocol allowed for synthesis of new bis(terpyridine) ligand L (6',6 ''-(2-phenylpyrimidine-4,6-diyl)bis(6-methyl-2,2'-bipyridine)) which comprises two tridentate N-donor subunits, designed so as to exploit the formation of supramolecular architectures of different nuclearity. Further complexation, while maintaining reaction parameters unaltered, with the following salts: CoCl2 (1), Co(NO3)(2) (2), Cu(NO3)(2) (3) and Mn(ClO4)(2) (4) led to three different classes of compounds: mono-, di- and trinuclear species, the result of self-assembly being contingent on the choice of the metal ion as well as to its corresponding counterion. Single crystal structures of [Co(L)Cl-2] (1), [Co-2(L)(NO3)(4)](CH3CN)(2) (2), [Cu-2(L)(NO3)(4)](CH3CN)(2) (3) and [Mn-3(L)(2)(H2O)(2)(CH3CN)(4)](ClO4)(6)center dot 2H(2)O (4) are presented, together with description of their magnetic behavior. Delusively simple coordination compounds were found to self-assemble into interesting supramolecular architectures in the solid state: 1D pillar-like constituent arranged in the helical manner (1), sheets of isostructural 2 and 3, hydrogen bonded zig-zag shaped chains (4). Magnetic susceptibility measurements made the determination of both antiferromagnetic interactions and metal ions' multiplicity possible. (C) 2013 Elsevier Ltd. All rights reserved.