One-dimensional coordination polymers from hexanuclear manganese carboxylate clusters featuring a {MnII4Mn III2(&mu;4-O)2} core and spacer linkers

Malaestean Yurii; Kravtsov Victor; Speldrich Manfred; Dulcevscaia Galina; Simonov Yurii A.; Lipkowski Janusz; Ellern Arkady M.; Baca Svetlana; Kogerler Paul

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MALAESTEAN, Yurii, KRAVTSOV, Victor, SPELDRICH, Manfred, DULCEVSCAIA, Galina, SIMONOV, Yurii A., LIPKOWSKI, Janusz, ELLERN, Arkady M., BACA, Svetlana, KOGERLER, Paul. One-dimensional coordination polymers from hexanuclear manganese carboxylate clusters featuring a {MnII4Mn III2(μ4-O)2} core and spacer linkers. In: Inorganic Chemistry, 2010, vol. 49, pp. 7764- 7772. ISSN 0020-1669. DOI: https://doi.org/10.1021/ic100541m

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Inorganic Chemistry

Volumul 49 / 2010 / ISSN 0020-1669

One-dimensional coordination polymers from hexanuclear manganese carboxylate clusters featuring a {Mn^II₄Mn ^III₂(μ₄-O)₂} core and spacer linkers

DOI:https://doi.org/10.1021/ic100541m

Pag. 7764- 7772

Malaestean Yurii¹, Kravtsov Victor², Speldrich Manfred¹, Dulcevscaia Galina³, Simonov Yurii A.², Lipkowski Janusz⁴, Ellern Arkady M.⁵, Baca Svetlana³, Kogerler Paul¹

¹ Institute of Inorganic Chemistry RWTH Aachen University,
² Institute of Applied Physics, Academy of Sciences of Moldova,
³ Institute of Chemistry of the Academy of Sciences of Moldova,
⁴ Institute of Physical Chemistry of the Polish Academy of Sciences, Polonia,
⁵ Iowa State University, Ames

Disponibil în IBN: 24 iulie 2023

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The bridging of hexanuclear mixed-valent carboxylate coordination clusters of the type [Mn₆O₂(O₂CR)₁₀] (R = CMe₃; CHMe₂) featuring a {Mn^II ₄Mn^III₂(μ₄-O)₂} core by geometrically rigid as well as flexible spacer ligands such as pyrazine (pyz), nicotinamide (na), or 1,2-bis(4-pyridyl)ethane (bpe) results exclusively in one-dimensional (1D) coordination polymers. The formation of {[Mn ₆O₂(O₂CCMe₃)₁₀(Me ₃CCO₂H)(EtOH)(na)] EtOH H₂O}_n (1), {[Mn₆O₂(O₂CCHMe₂) ₁₀(pyz)₃] H₂O}_n (2), and {[Mn ₆O₂(O₂CCHMe₂)₁₀(Me ₂CHCO₂H)(EtOH)(bpe)] Me₂CHCO₂H} _n (3) illustrates a surprising preference of the interlinked {Mn ₆} units toward 1D coordination chains. In the solid-state, the observed chain propagation axes are either colinear (1 and 3) or perpendicular (2), whereby crystal packing is further influenced by solvent molecules. Magnetic properties of these network compounds can be rationalized based on that the magnetism of discrete [Mn₆O₂(O₂CR) ₁₀]-type coordination clusters with all-antiferromagnetic intramolecular exchange and weak antiferromagnetic intercluster coupling in 1, 2, and 3 follows the expected exchange coupling strength of the employed spacer linkers.