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• W1993239097 endingPage "1167" @default.
• W1993239097 startingPage "1158" @default.
• W1993239097 abstract "Structural characterization of the newly synthesized complexes [MII(L1OO)(xH2O)][ClO4]·2H2O [M = Co, x = 1 (1); M = Cu, x = 0 (2); L1OO− = 3-[(2-(pyridin-2-yl)ethyl){2-(pyridin-2-yl)methyl}amino]propionate] reveals that 1 and 2 are 1D chainlike coordination polymers. A tridentate variety of this ligand afforded a discrete tetranuclear complex {[CuII(L2OO)(OClO3)]}4·MeCN (3) [L2OO− = 3-[N-methyl-{2-(pyridine-2-yl)ethyl}amino]propionate]. Analysis of the crystal packing diagrams reveals extensive π−π stacking in 1 and C−H···O hydrogen bonding interactions in 3, leading to the formation of network structures. For these complexes, absorption spectral properties have been investigated. All three complexes exhibit exchange interaction between the MII ions through a syn−anti bridging carboxylate pathway. Magnetic studies on 1 show spontaneous magnetization below 5 K, which corresponds to the presence of spin-canted antiferromagnetism. At T = 2 K, the values of coercive field (Hc) and remnant magnetization (Mr) are 200 G and 0.019 μB, respectively. Analysis of the magnetic data through spin Hamiltonians in the form Ĥ = ∑i<jn −JijŜiŜj (J is positive for a ferromagnetic interaction and negative for an antiferromagnetic interaction) leads to the following set of best-fit parameters: J = −2.65(2), −0.66(1), and +12.2(2) cm–1 for 1, 2, and 3, respectively. An attempt has been made to rationalize the observed magnetic behavior." @default.
• W1993239097 created "2016-06-24" @default.
• W1993239097 creator A5041910204 @default.
• W1993239097 creator A5069201232 @default.
• W1993239097 creator A5067191089 @default.
• W1993239097 date "2009-01-07" @default.
• W1993239097 modified "2023-09-28" @default.
• W1993239097 title "One-Dimensional Co^II and Cu^II Coordination Polymers and a Discrete Cu^II₄ Complex of Carboxylate-Appended (2-Pyridyl)alkylamine Ligands: Spin-Canting and Anti-/Ferromagnetic Coupling" @default.
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• W1993239097 doi "https://doi.org/10.1021/ic800861m" @default.
• W1993239097 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19166370" @default.
• W1993239097 hasPublicationYear "2009" @default.
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