One-dimensional helical coordination polymers of cobalt(II) and iron(II) ions with 2,2′-bipyridyl-3,3′-dicarboxylate (BPDC2−)

Kwak, Ock Keum; Min, Kil Sik; Kim, Bong Gon

doi:10.1016/j.ica.2006.09.010

Cited by 13 publications

(4 citation statements)

References 40 publications

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“…The bond angles surrounding Co1 and Co2 ions vary from 76.46(11) to 172.37(10)°. The distances of Co–O bonds range from 1.986 to 2.243 Å, while the Co–N bond lengths vary from 2.025 to 2.160 Å, which are in the normal range. , The ppc 2– ligand exhibits a μ 4 bridging mode with all oxygen and nitrogen atoms taking part in coordination. This forms three typological bridges among metal ions: (i) the 2-fold N–N bridge from two ppc 2– ligands, which creates an approximate centrosymmetric quasi-planar Co(N–N) 2 Co hexagon with Co1···Co2 = 3.815 Å.…”

Section: Resultsmentioning

confidence: 99%

Five Multidimensional Co(II)-Complexes (Zero-Dimensional to Three-Dimensional) Derived from an Asymmetric 5-(Pyridin-3-yl)-1H-pyrazole-3-carboxylic Acid: Syntheses, Structures, and Magnetic Properties

Pan

et al. 2017

Crystal Growth & Design

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On the basis of an asymmetric, conjugated, partially or wholly deprotonated 5-(pyridin-3-yl)-1H-pyrazole-3-carboxylic acid (H 2 ppc),, and [Co(Hppc) 2 (mbbbm)] 2 (5) [mbbbm = 1,3-bis(benzimidazole-1-ylmethyl)benzene)] have been synthesized and characterized magnetically and structurally. Polymer 1, which has the Schlafi symbol (4 2 •6 2 •8 2 ) 2 (4 2 •6•8 3 ) 2 , is a three-dimensional (3D) network. Polymer 2 includes a mononuclear subunit and an infinite two-dimensional (2D) framework subunit, while polymer 3 is a 2D sheet structure. Polymer 4 is characterized by a one-dimensional double ladder-like chain structure. Complex 5 possesses a binuclear structure. Magnetization data for 1 with the Co 2 units show the antiferromagnetic coupling in the Co 2 units. No long-range magnetic ordering is observed for 1. 2, 3, and 5 display weak antiferromagnetic exchange interactions. For 4 with the similar Co 2 units, it also exhibits antiferromagnetic coupling in the Co 2 units, and the M(H) curve is consistent with the antiferromagnetic nature in the Co 2 units. Variable temperature magnetic studies reveal that 2, 3, and 5 display weak antiferromagnetic interactions. The observed magnetization values, which were ∼2.5 Nβ at high field for 2, 3, and 5, are in accordance with the value anticipated for single uncompensated S = 1/2 spin.

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Section: Resultsmentioning

confidence: 99%

Five Multidimensional Co(II)-Complexes (Zero-Dimensional to Three-Dimensional) Derived from an Asymmetric 5-(Pyridin-3-yl)-1H-pyrazole-3-carboxylic Acid: Syntheses, Structures, and Magnetic Properties

Pan

et al. 2017

Crystal Growth & Design

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“…X-ray single-crystal diffraction analysis revealed that 1 is a salt consisting of a one-dimensional linear chain formed from Co 2+ and with uncoordinated (cpa) 2-balancing the overall charge and attached to the cation via hydrogen bonds with coordinated water. As shown in figure 1( 3 ]·H 2 O} n (bpdc = 2,2′-bipyridyl-3,3′-dicarboxylic acid) [34]. Each bpy bridges two Co 2+ to form a linear chain structure with Co…Co distance of 11.401(2) Å ( figure 1(b)).…”

Section: X-ray Crystallographymentioning

confidence: 99%

Coordination polymers constructed from an asymmetric dicarboxylate and N-donors: preparation, characterization, and properties

Chen

Qiao

Gao

et al. 2013

Journal of Coordination Chemistry

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Two new coordination polymers with an asymmetric dicarboxylate and 4,4′-bipyridine ligand, {[Co (bpy)(H 2 O) 4 ]·(cpa)·0.5H 2 O} n (1) and {[Ag(cpa)(bpy)][Ag(bpy)]·4H 2 O} n (2) (H 2 cpa = 4-(2-carboxyethyl)benzoic acid, bpy = 4,4′-bipyridine), have been hydrothermally synthesized and characterized by elemental analysis, FT-IR spectroscopy, and single-crystal X-ray diffraction. Compound 1 displays a chain with guest molecule (cpa) 2− ions existing in the structure. Compound 2 contains two independent units, [Ag(cpa)(bpy)] -(A) and [Ag(bpy)] + (B), which form a 1-D + 1-D structure. A shows a 1-D chain structure bearing hooks formed by the carboxylates and organized into a tubular structure by hydrogen-bonding interactions. B has linear chains formed from Ag + and bpy. The A and B chains co-crystallize with waters of crystallization to provide two linear [Ag(bpy)] + chains embedded in the tubular structure formed by A via π…π stacking contacts. In 1 and 2, hydrogenbonding and π…π stacking interactions connect the discrete 1-D chains into 3-D supramolecular structures. The fluorescent properties, TG analysis, and X-ray powder diffraction patterns for 1 and 2 were also measured.

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“…So far, great efforts have been devoted to construct MOFs based on lanthanide salts with polycarboxylate ligands, like 2,2 0 -bipyridine-3,3 0 -dicarboxylate [3,4], 2,2 0 -bipyridine-4,4 0 -dicarboxylate [9][10][11][12][13], 2,2 0 -bipyridine-6,6 0 -dicarboxylate [2,14], 1,3-benzenedicarboxylate [1,[15][16][17], and so on. 4,4 0 -oxybisbenzoic acid (H 2 oba) is a typical example of long, V-shaped and flexible ligand to construct MOFs with novel structures [18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Two sodium and lanthanide(III) MOFs based on oxalate and V-shaped 4,4′-oxybis(benzoate) ligands: Hydrothermal synthesis, crystal structure, and luminescence properties

Wang

Guo

Wang

2013

Journal of Molecular Structure

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One-dimensional helical coordination polymers of cobalt(II) and iron(II) ions with 2,2′-bipyridyl-3,3′-dicarboxylate (BPDC2−)

Cited by 13 publications

References 40 publications

Five Multidimensional Co(II)-Complexes (Zero-Dimensional to Three-Dimensional) Derived from an Asymmetric 5-(Pyridin-3-yl)-1H-pyrazole-3-carboxylic Acid: Syntheses, Structures, and Magnetic Properties

Five Multidimensional Co(II)-Complexes (Zero-Dimensional to Three-Dimensional) Derived from an Asymmetric 5-(Pyridin-3-yl)-1H-pyrazole-3-carboxylic Acid: Syntheses, Structures, and Magnetic Properties

Coordination polymers constructed from an asymmetric dicarboxylate and N-donors: preparation, characterization, and properties

Two sodium and lanthanide(III) MOFs based on oxalate and V-shaped 4,4′-oxybis(benzoate) ligands: Hydrothermal synthesis, crystal structure, and luminescence properties

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