Reversible Guest Exchange and Ferrimagnetism (TC = 60.5 K) in a Porous Cobalt(II)−Hydroxide Layer Structure Pillared with trans-1,4-Cyclohexanedicarboxylate

Kurmoo, Mohamedally; Kumagai, Hiroo; Hughes, Suzanne; Kepert, Cameron J.

doi:10.1021/ic034787g

Cited by 223 publications

(131 citation statements)

References 48 publications

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“…The design and construction of new functional solids based on metal-organic frameworks has been extensively studied [1,2]. This is not only due to their structural diversities but also for their potential or practical application in the area of catalysis, gas storage and nonlinear optics [3,4].…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of catena-diaquabis(1,3-bis(4-pyridyl)propane)cobalt(II) diperchlorate-1,3-bis(4-pyridyl)propane - water (1:3:1), [Co(C13H14N2)2(H2O)2][ClO4]2 · 3C13H14N2 · H2O

Qin¹,

Zhao²,

Wang³

et al. 2007

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of materialThe title compound was prepared under hydrothermal conditions. A mixture of 1,3-bis(4-pyridyl)propane (bpp, 4 mmol), NaOH (1 mmol), Co(ClO 4)2 (2 mmol), and water (12 ml) was sealed in a 25 mL Teflon-lined reactor and heated in an autoclave at 160°C for 72 h. Then the autoclave was slowly cooled to room temperature. The title complex, as red block-shaped crystals, was collected by filtration, washed with water, and dried in air. DiscussionThe design and construction of new functional solids based on metal-organic frameworks has been extensively studied [1,2]. This is not only due to their structural diversities but also for their potential or practical application in the area of catalysis, gas storage and nonlinear optics [3,4]. In constructing MOFs, flexible ligands are usually selected because they may act as bridging to extend the architecture to 1D chains, 2D layers and 3D networks [5,6]. 1,3-Bis(4-pyridyl)propane, as a very flexible versatile bifunctional ligand, has been frequently used as a spacer for the construction of the polymeric compounds [7,8]. The longer nitrogen-to-nitrogen span in bpp can lead to larger cavities in coordination networks, and different conformations of bpp can result in different extended structures. Up to now, many M(II)-bpp coordination polymers have been synthesized and reported [9,10]. In the title crystal structure, the asymmetric unit consists of one cobalt center bridged by one bpp ligand, one coordinated water molecule, one non-bonded perchlorate ion, one and a half free bpp molecules and one water molecule of crystallization (figure, top). The cobalt ion adopts a distorted octahedron, in which four nitrogen atoms from four bridging bpp ligands occupy the equatorial plane, and two coordinated water molecules occupy the axial positions. The Co1N1 and Co1N2 bond distances are 2.157(2) Å and 2.231(2) Å, respectively. The axial CoO distances have a value of 2.107(2) Å. The CoO and CoN dis-Z. Kristallogr.

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Section: Discussionmentioning

confidence: 99%

Crystal structure of catena-diaquabis(1,3-bis(4-pyridyl)propane)cobalt(II) diperchlorate-1,3-bis(4-pyridyl)propane - water (1:3:1), [Co(C13H14N2)2(H2O)2][ClO4]2 · 3C13H14N2 · H2O

Qin¹,

Zhao²,

Wang³

et al. 2007

Zeitschrift Für Kristallographie - New Crystal Structures

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“…Phenyldicarboxylates and analogues have been widely used in construction of coordination polymers as building blocks. In contrast to phenyldicaiboxylate complexes, 1,4-cyclohexanedicarboxylate complexes are much less studied because the flexibility of the ligand (1,4-cyclohexanedicarboxylic acid, H2chdc) makes it difficult to form nice crystals [3][4][5]. In the title compound the six-coordinated copper atom is bonded to four oxygen atoms of two chdc 2-ligands and to two nitrogen atoms of one 1,10-phenanthroline ligand (figure, top).…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of (μ2-1,4-cyclohexanedicarboxylato)(1,10-phenanthroline)- copper(II) monohydrate, Cu(C12H8N2)(C8H10O4) · H20

Ma¹,

Yu²,

Zhu³

2004

Zeitschrift Für Kristallographie - New Crystal Structures

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“…As with these related compounds, [12][13][14][15][16][17] we expect the tetrahedrally coordinated ions to form a 4 A 1 ground term, and the octahedrally coordinated Co(II) ions to adopt a 4 T 1g spin configuration. Although the orbital contribution to the momentum are likely to produce local spin anisotropies, exactly how these individual ion properties will contribute in the bulk magnetic behaviour is difficult to predict.…”

Section: Magnetismmentioning

confidence: 96%

“…This is the case for a small group of basic zinc hydroxide minerals, including; namuwite [10] and ramsbeckite, [11] and an increasing number of complex cobalt hydroxides. [12][13][14][15][16][17] From a magnetic perspective the brucite structural family offer an interesting prospect to find exotic new behaviour. In brucite itself the metal ions are arranged in a triangular lattice, and site substitution, or depletion, that preserves a trigonal symmetry can result in other potential geometrically frustrated networks.…”

Section: Introductionmentioning

confidence: 99%

Structure and magnetism of new hybrid cobalt hydroxide materials built from decorated brucite layers

Keene¹,

Light²,

Hursthouse³

et al. 2011

Dalton Trans.

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IntroductionThe properties of all functional electronic materials are determined by their composition and their structure. It is an ultimate goal for materials scientists to form new materials with such precise structural control as to give completely predictable electronic properties. Fortunately this ambition remains largely beyond our grasp, allowing synthetic chemists the frequent pleasure of surprise in what they may make.However, there are many important structural features which are amenable to some level of control such as the characteristic dimension of a material which has implications for many physical properties. One way to control dimensionallity is to build materials from components with different characters, typically in which the nature of electron-electron interactions varies greatly, and in which it is possible to physically segregate these parts on a microscopic level. Such a spatial confinement can be achieved in composite or hybrid materials in which characteristic "organic" ii) The M II can be replaced by a M III ion, which is coupled to the incorporation of a Fig. 1 a); 1 / 7 the maple leaf net (Fig. 1b), and so on. The first members of this series of trigonally symmetric networks are shown in ESI Figure S1. Although trigonal symmetry can be important for 2-D spin frustration, it is not a guarantee of a non-bipartite lattice. phase. Adjusting the synthetic conditions proved more fruitful and the yield of 3 was increased from a few crystals to an extractable and manageable quantity (~10 mg).We believe that there may be a correlation between the "ease of synthesis" and the role of the Na + and K + cation in the respective structures. Crystal StructuresThe structures were determined by single crystal X-ray diffraction. See Table 1 and Experimental Section for measurement, solution and refinement details. Structure of 1.The compound Co 12 (OH) 18 (ox) 3 (pip) (1) crystallises in the trigonal space group 3 P (# 147) and consists of two types of alternating layers ( Structure of 2 and 3.Compounds 2 and 3 are essentially isomorphous and isostructural crystallising in the polar trigonal space group P31c (# 159). The difference between the compounds is the alkali metal cation (Na in 2, K in 3), differences in crystal quality result in small differences between refined models (see Experimental Section). We describe the structure of 2 and give comparable details for 3 in square brackets. (Fig. 3).As with 1, the cobalt/hydroxide layer (type 1) is based on the brucite structure, although here we see a periodic loss of three out of every nineteen cobalt ions from the octahedral sites within the layer, giving the network structure shown in Figure 1d.These layer defects occur in groups of three centred about the three-fold crystallographic axis at ( 1 / 3 , 1 / 3 , c). The remaining octahedral cage of oxygen atoms forms the basal set for two tetrahedrally coordinated cobalt ions, which decorate the layer (Fig. 3b). The apical hydroxide of the CoO 4 tetrahedra is µ 3 -bridging two further Co 2+ ions wit...

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Reversible Guest Exchange and Ferrimagnetism (T_C = 60.5 K) in a Porous Cobalt(II)−Hydroxide Layer Structure Pillared with trans-1,4-Cyclohexanedicarboxylate

Cited by 223 publications

References 48 publications

Crystal structure of catena-diaquabis(1,3-bis(4-pyridyl)propane)cobalt(II) diperchlorate-1,3-bis(4-pyridyl)propane - water (1:3:1), [Co(C13H14N2)2(H2O)2][ClO4]2 · 3C13H14N2 · H2O

Crystal structure of catena-diaquabis(1,3-bis(4-pyridyl)propane)cobalt(II) diperchlorate-1,3-bis(4-pyridyl)propane - water (1:3:1), [Co(C13H14N2)2(H2O)2][ClO4]2 · 3C13H14N2 · H2O

Crystal structure of (μ2-1,4-cyclohexanedicarboxylato)(1,10-phenanthroline)- copper(II) monohydrate, Cu(C12H8N2)(C8H10O4) · H20

Structure and magnetism of new hybrid cobalt hydroxide materials built from decorated brucite layers

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