Different Metal Aggregation in Copper Acetate Chain Coordination Polymers with Dipyridyl Tethers Bearing Hydrogen Bonding Capable Functional Groups

Uebler, Jacob W.; Stone, Brandon S.; LaDuca, Robert L.

doi:10.1002/zaac.201300199

Cited by 2 publications

(2 citation statements)

References 47 publications

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“…In contrast, under the same conditions, Zn(OAc) 2 •2H 2 O reacts with 4,4′-bpy to give the two-stranded polymer containing the {Zn 2 (OAc) 4 } units in Scheme 4d. 49 50 In each of the above cases, a single analytically pure product is obtained in which the metal acetato assembly deviates from the more common paddlewheel motif.…”

Section: Comments On the Variation In Metal Assembly Motifsmentioning

confidence: 99%

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Do perfluoroarene⋯arene and C–H⋯F interactions make a difference to the structures of 4,2′:6′,4′′-terpyridine-based coordination polymers?

et al. 2013

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The consequences for the structures of coordination polymers of introducing fluoro substituents into the terminal phenyl domain of 4′-(biphenyl-4-yl)-4,2′:6′,4′′-terpyridine (1) have been investigated. Reaction between Cu(OAc) 2 •H 2 O and 4′-(2′,3′,4′,5′,6′-pentafluorobiphenyl-4-yl)-4,2′:6′,4′′-terpyridine (2) yields the one-dimensional coordination polymer [Cu 2 (μ-OAc) 4 (2)] n which contains paddle-wheel {Cu 2 (OAc) 4 } nodes bridged by ligands 2. The compound is isostructural with [Cu 2 (μ-OAc) 4 (1)] n. When Cu(OAc) 2 •H 2 O reacts with a 1 : 1 mixture of 1 and 2, [Cu 2 (μ-OAc) 4 (1)] n and [Cu 2 (μ-OAc) 4 (2)] n co-crystallize with 1 and 2 disordered over one ligand site; the onedimensional coordination polymer is isostructural with each of [Cu 2 (μ-OAc) 4 (1)] n and [Cu 2 (μ-OAc) 4 (2)] n indicating that replacing H by F substituents in the peripheral arene ring has no effect on the overall solid-state structure: tpy⋯tpy π-stacking is preserved, arene⋯arene π H ⋯π H interactions are replaced by perfluoroarene⋯arene π F ⋯π H interactions, and H⋯H contacts are replaced by H⋯F interactions. In stark contrast to the latter observations, the reaction of Zn(OAc) 2 •2H 2 O with perfluoro derivative 2 yields [Zn 5 (OAc) 10 (2) 4 •11H 2 O] n as the dominant onedimensional polymer; minor amounts of the anticipated polymer [Zn 2 (μ-OAc) 4 (2)] n are also formed. The solid-state structure of [Zn 5 (OAc) 10 (2) 4 •11H 2 O] n consists of quadruple-stranded polymer chains assembled from {Zn 5 (2) 4 } subchains interconnected by {Zn 5 (OAc) 10 } units. Within each chain, π F ⋯π F and π H ⋯π H stacking interactions are dominant, while the observed assembly of chains into sheets and π-stacking between arene units in adjacent sheets mimic the dominant interactions in the single-stranded chains observed in [Zn 2 (μ-OAc) 4 (1)] n , [Zn 2 (μ-OAc) 4 (2)] n , [Cu 2 (μ-OAc) 4 (1)] n , [Cu 2 (μ-OAc) 4 (2)] n and [Cu 2 (μ-OAc) 4 (1)] n •[Cu 2 (μ-OAc) 4 (2)] n .

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Section: Comments On the Variation In Metal Assembly Motifsmentioning

confidence: 99%

“…48 Reaction of Cu(OAc) 2 •H 2 O with 4,4-bipyridine (4,4′-bpy) under hydrothermal units in Scheme 4b. 50 In each of the above cases, a single analytically pure product is obtained in which the metal acetato assembly deviates from the more common paddlewheel motif.…”

Section: Comments On the Variation In Metal Assembly Motifsmentioning

confidence: 99%

Do perfluoroarene⋯arene and C–H⋯F interactions make a difference to the structures of 4,2′:6′,4′′-terpyridine-based coordination polymers?

et al. 2013

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Field-Induced Ferromagnetism and Multiferroic Behavior in End-on Pseudohalide-Bridged Dinuclear Copper(II) Complexes with Tridentate Schiff Base Blocking Ligands

et al. 2014

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Four new end-on pseudohalide-bridged dinuclear copper(II) complexes, [Cu2(L(1))2(N3)2]·DMF (1), [Cu2(L(2))2(N3)2] (2), [Cu2(L(3))2(NCS)2] (3), and [Cu2(L(4))2(N3)2] (4) {where HL(1), HL(2), HL(3), and HL(4) are tridentate N2O donor Schiff bases}, are synthesized and characterized. Complexes 1, 2, and 3 possess π···π stacking interactions, while in addition hydrogen-bonding interactions are present in 1 and 3. However, by contrast, complex 4 contains neither type of interaction. Field-induced long-range ferromagnetic ordering beyond 0.9 T is observed in complexes 1 and 2 due to π···π stacking interactions, while ferroelectric ordering is observed in complexes 1 and 3 due to hydrogen-bonding interactions. Most interestingly, complex 1, which contains both π···π stacking and hydrogen-bonding interactions, shows multiferroic behavior as a result of coupling between the dielectric and magnetic fields with 8% change in the magneto-dielectric effect at room temperature. We believe that from this study will emerge a new class of multiferroic materials.

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Different Metal Aggregation in Copper Acetate Chain Coordination Polymers with Dipyridyl Tethers Bearing Hydrogen Bonding Capable Functional Groups

Cited by 2 publications

References 47 publications

Do perfluoroarene⋯arene and C–H⋯F interactions make a difference to the structures of 4,2′:6′,4′′-terpyridine-based coordination polymers?

Do perfluoroarene⋯arene and C–H⋯F interactions make a difference to the structures of 4,2′:6′,4′′-terpyridine-based coordination polymers?

Field-Induced Ferromagnetism and Multiferroic Behavior in End-on Pseudohalide-Bridged Dinuclear Copper(II) Complexes with Tridentate Schiff Base Blocking Ligands

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