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- W2000814614 abstract "Three ladder-like coordination polymers, [Cu2(phprpy)2-μ-(N3)2(N3)2], 1; [Cu2(terpy)2-μ-(N3)4Cu2-μ-(N3)2(N3)2], 2; and[Cu2(terpy)2-μ-(N3)2(N3)2Cu3-μ-(N3)4(N3)2], 3, consisting of Cu2+ ions with double end-on azide bridges were synthesized, their crystal structures and magnetic properties were determined, and spin dimer analysis was performed to explain the signs and strengths of their strong spin exchange interactions [phprpy is 4-(3-phenylpropyl)pyridine and terpy is 2,2‘:6,2‘ ‘-terpyridine]. Although these compounds have ladder-like arrangements of Cu2+ ions, their magnetic structures are described as isolated dimers for 1 and 2 and as isolated trimers for 3. The predominant spin exchange paths in 1−3 have double end-on azide bridges linking adjacent Cu2+ ions, and the geometrical parameters of these bridging structures are similar. However, the spin dimer of 1 exhibits a strong ferromagnetic coupling; that of 2, a strong antiferromagnetic coupling; and that of 3, a weak ferromagnetic coupling. These findings are well explained by the present spin dimer analysis and show that the nature and geometry of the nonbridging ligands can have a strong influence on the sign and strength of the spin exchange interaction between Cu2+ ions connected by double end-on azide bridges." @default.
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- W2000814614 date "2005-01-13" @default.
- W2000814614 modified "2023-10-16" @default.
- W2000814614 title "Dramatic Variation of Magnetic Exchange through Double End-on Azide Bridges in a Series of Ladder-Like Copper(II) Coordination Polymers" @default.
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- W2000814614 doi "https://doi.org/10.1021/ic049175q" @default.
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