Weak Ferromagnetism in Chiral 3-Dimensional Oxalato-Bridged Cobalt(II) Compounds. Crystal Structure of [Co(bpy)3][Co2(ox)3]ClO4

Hernández-Molina, Marı́a; Lloret, Francesc; Ruíz-Pérez, Catalina; Julve, Miguel

doi:10.1021/ic980306v

Cited by 139 publications

(58 citation statements)

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“…Homo-and dimetallic chiral three-dimensional (3-D) oxalate-bridged networks ( 3 ] 3ϩ , where bpy is 2,2Ј-bipyridine. [3,16] Nevertheless, all these 3-D networks present antiferromagnetic exchange interactions, but no long-range order, except for two Co II derivatives [17] In this family of compounds we have also found, as in the related 2-D series, a ferromagnetic ordering, but at lower temperatures because of the weaker magnetic interactions between the metallic centers as a consequence of a loss of planarity in the oxalato bridge. It is noteworthy to mention that these series represent one of few examples of chiral magnets known to date.…”

Section: Introductionsupporting

confidence: 47%

Hybrid Organic/Inorganic Molecular Materials Formed by Tetrathiafulvalene Radicals and Magnetic Trimeric Clusters of Dimetallic Oxalate‐Bridged Complexes: The Series (TTF)₄{M^II(H₂O)₂[M^III(ox)₃]₂}·nH₂O (M^II = Mn, Fe, Co, Ni, Cu and Zn; M^III = Cr and Fe; ox = C₂O₄²⁻)

et al. 2003

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Section: Introductionsupporting

confidence: 47%

Hybrid Organic/Inorganic Molecular Materials Formed by Tetrathiafulvalene Radicals and Magnetic Trimeric Clusters of Dimetallic Oxalate‐Bridged Complexes: The Series (TTF)₄{M^II(H₂O)₂[M^III(ox)₃]₂}·nH₂O (M^II = Mn, Fe, Co, Ni, Cu and Zn; M^III = Cr and Fe; ox = C₂O₄²⁻)

et al. 2003

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“…Crystal structures of tris-chelated transition-metal 2,2'-bipyridine (bipy) complexes containing the [Co(bipy) 3] 2+ fragment have been extensively studied during last two decades [1][2][3][4][5][6][7][8] …”

Section: Discussionmentioning

confidence: 99%

Crystal structure of tris(2,2'-bipyridine)cobalt(in) triperchlorate dihydrate, [CO(C10H8N2)3](CIO4)3 · 2H2O

Du¹,

Zhao²,

Cai³

2004

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of materialA methanol solution (10 mL) of benzene-1,4-dioxyacetic acid (23 mg, 0.1 mmol), acting as the oxidizing agent in this reaction, was added into a solution of Co(C104)2 • 6H2O (40 mg, 0.1 mmol) in H2O (10 mL) with vigorous stirring, and then a methanol solution (5 mL) of 2,2'-bipyridine (32 mg, 0.2 mmol) was added into the above light-pink solution under stirring for ca. 30 min. The resultant yellow solution was Altered and left to stand at room temperature. Yellow prism-like single crystals suitable for X-ray diffraction were obtained after several days by slow evaporation of the solvent in 70 % yield.* Correspondence author (e-mail: dumiao@public.tpt.tj.cn) Experimental detailsExcept hydrogen atoms of lattice water molecules, which could not be located definitely, all hydrogen atoms of the ligands were placed in geometrically calculated positions and included in the final refinement in riding model approximation, with displacement parameters derived from the atoms to which they were bonded [U is o(H) = 1.2t/eq(C)]. DiscussionCrystal structures of tris-chelated transition-metal 2,2'-bipyridine (bipy) complexes containing the [Co (bipy)

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“…In order to reach this target, two possible strategies are possible. The first one is to introduce a chiral group in the oxamate ligand and use an enantiopure ligand hoping that it will transfer its chirality to the tris-chelated metal ion to form {Cat 2 2+ complexes, [81][82][83][84] which perfectly fit the cavity size and shape of the 10.3a network. Within the oxamato network, the size of the expected cavity is much larger.…”

Section: Three Connected 3d Networkmentioning

confidence: 99%

Design of Magnetic Coordination Polymers Built from Polyoxalamide Ligands: A Thirty Year Story

et al. 2018

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Abstract:The aim of this review is to pay tribute to the legacy of O. Kahn. Kahn's credo was to synthesize magnetic compounds with predictable structure and magnetic properties. This is illustrated herein with results obtained by Kahn's group during his Orsay period thirty years ago, but also on the basis of our recent results on the synthesis of coordination polymers with oxamate ligands. The first part of this review is devoted to a short description of the necessary knowledge in physics and theoretical chemistry that Kahn and his group have used to select oxamate ligands, the complex-as-ligand strategy and the synthesis of heterobimetallic systems. Then, we describe the strategies we have later used to obtain the desired target compounds. The use of complexes as building-blocks, associated to a control of the metal ions chirality and stoichiometry, allowed us to obtain coordination polymers with predictable dimensionality. For the synthesis of single-chain magnets (SCMs) we show IncipitFor this thematic issue dedicated to the attractive legacy of Olivier Kahn, we decided to write this paper on magnetic coordination polymers built from polyoxalamide ligands. Some of the authors of this paper were part of the exciting adventure at the time of the creation of the Kahn's group at the University of Paris-Sud. Kahn's credo was to synthesize magnetic compounds with predictable structure and magnetic properties and in order to achieve this goal one needs some backgrounds in physics, theory and synthetic chemistry. We have therefore tried that the ligand chemical flexibility makes the isolation of the chains in the solid and the occurence of slow magnetic relaxation possible. For 1D and 2D molecule-based magnets (MBMs), the magnetic ordering strongly depends on the interchain or interplane interactions, which are difficult to control. Again the flexibility of the oxamate ligands allowed their strengthening in the solid sate, yielding MBMs with critical temperatures up to 30 K. We will also present our results on 3D coordination polymers, particularly on the porous magnets displaying large octagonal channels. This family of porous MBMs possess outstanding chemical properties, such as post-synthetic transformation in the solid state. Finally, we will also show that oxamate ligands allows the design of multifunctional materials, as in the case of the first chiral SCM. Overall, the results presented in this review show the impressive potential the oxamate ligands have for the design of coordination polymers.throughout this contribution to describe the historical process and the approach of the group's behind the choice of oxamate and oxamidate ligands to synthesize heterometallic coordination polymers.

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Weak Ferromagnetism in Chiral 3-Dimensional Oxalato-Bridged Cobalt(II) Compounds. Crystal Structure of [Co(bpy)₃][Co₂(ox)₃]ClO₄

Cited by 139 publications

References 39 publications

Hybrid Organic/Inorganic Molecular Materials Formed by Tetrathiafulvalene Radicals and Magnetic Trimeric Clusters of Dimetallic Oxalate‐Bridged Complexes: The Series (TTF)₄{M^II(H₂O)₂[M^III(ox)₃]₂}·nH₂O (M^II = Mn, Fe, Co, Ni, Cu and Zn; M^III = Cr and Fe; ox = C₂O₄²⁻)

Hybrid Organic/Inorganic Molecular Materials Formed by Tetrathiafulvalene Radicals and Magnetic Trimeric Clusters of Dimetallic Oxalate‐Bridged Complexes: The Series (TTF)₄{M^II(H₂O)₂[M^III(ox)₃]₂}·nH₂O (M^II = Mn, Fe, Co, Ni, Cu and Zn; M^III = Cr and Fe; ox = C₂O₄²⁻)

Crystal structure of tris(2,2'-bipyridine)cobalt(in) triperchlorate dihydrate, [CO(C10H8N2)3](CIO4)3 · 2H2O

Design of Magnetic Coordination Polymers Built from Polyoxalamide Ligands: A Thirty Year Story

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Weak Ferromagnetism in Chiral 3-Dimensional Oxalato-Bridged Cobalt(II) Compounds. Crystal Structure of [Co(bpy)3][Co2(ox)3]ClO4

Cited by 139 publications

References 39 publications

Hybrid Organic/Inorganic Molecular Materials Formed by Tetrathiafulvalene Radicals and Magnetic Trimeric Clusters of Dimetallic Oxalate‐Bridged Complexes: The Series (TTF)4{MII(H2O)2[MIII(ox)3]2}·nH2O (MII = Mn, Fe, Co, Ni, Cu and Zn; MIII = Cr and Fe; ox = C2O42−)

Hybrid Organic/Inorganic Molecular Materials Formed by Tetrathiafulvalene Radicals and Magnetic Trimeric Clusters of Dimetallic Oxalate‐Bridged Complexes: The Series (TTF)4{MII(H2O)2[MIII(ox)3]2}·nH2O (MII = Mn, Fe, Co, Ni, Cu and Zn; MIII = Cr and Fe; ox = C2O42−)

Crystal structure of tris(2,2'-bipyridine)cobalt(in) triperchlorate dihydrate, [CO(C10H8N2)3](CIO4)3 · 2H2O

Design of Magnetic Coordination Polymers Built from Polyoxalamide Ligands: A Thirty Year Story

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Weak Ferromagnetism in Chiral 3-Dimensional Oxalato-Bridged Cobalt(II) Compounds. Crystal Structure of [Co(bpy)₃][Co₂(ox)₃]ClO₄

Hybrid Organic/Inorganic Molecular Materials Formed by Tetrathiafulvalene Radicals and Magnetic Trimeric Clusters of Dimetallic Oxalate‐Bridged Complexes: The Series (TTF)₄{M^II(H₂O)₂[M^III(ox)₃]₂}·nH₂O (M^II = Mn, Fe, Co, Ni, Cu and Zn; M^III = Cr and Fe; ox = C₂O₄²⁻)

Hybrid Organic/Inorganic Molecular Materials Formed by Tetrathiafulvalene Radicals and Magnetic Trimeric Clusters of Dimetallic Oxalate‐Bridged Complexes: The Series (TTF)₄{M^II(H₂O)₂[M^III(ox)₃]₂}·nH₂O (M^II = Mn, Fe, Co, Ni, Cu and Zn; M^III = Cr and Fe; ox = C₂O₄²⁻)