Two azido-bridged copper(ii) coordination polymers with isonicotinate-N-oxide and picolinate-N-oxide acting as co-ligands

Gao, Qian; Xie, Ya-Bo; Thorstad, Melissa; Sun, Jihong; Cui, Yue; Zhou, Hong‐Cai

doi:10.1039/c0ce00914h

Cited by 29 publications

(8 citation statements)

References 62 publications

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“…7. The M T value of 0.482 cm À3 K mol À1 per Cu II ion at room temperature is larger than the expected value for an isolated Cu II ion of spin S = 1 2 (the theoretical value is 0.375 cm 3 K mol À1 with g = 2) (Gao et al, 2011;Yan et al, 2011). Upon decreasing the temperature, the M T value remains almost constant until about 110 K and below this temperature down to 30 K decreases moderately.…”

Section: Tablementioning

confidence: 66%

Structure and magnetic properties of a copper(II) coordination polymer based on azide, pyridine and homophthalic acid

Wang

Fan

et al. 2015

Acta Crystallogr C

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The azide anion is a short bridging ligand that has been used extensively to construct magnetic coordination polymers, and fundamental magneto-structural correlations have been substantiated by theoretical calculations. The copper(II) coordination polymer poly[bis(μ-azido-κ(2)N(1):N(1))(μ4-homophthalato-κ(4)O:O':O'':O''')bis(pyridine-κN)dicopper(II)], [Cu2(C9H6O4)(N3)2(C5H5N)2]n, was synthesized from homophthalic acid (2-carboxyphenylacetic acid), pyridine and azide (N3(-)) by a hydrothermal reaction. Single-crystal structure analysis indicated that it features a one-dimensional chain structure which is comprised of (μ1,1-N3(-))(μ-syn-syn-COO(-))2- and (μ1,1-N3(-))2-bridged tetranuclear Cu(II) units. Magnetic measurements revealed that the compound exhibits dominant antiferromagnetic behaviour.

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Section: Tablementioning

confidence: 66%

Structure and magnetic properties of a copper(II) coordination polymer based on azide, pyridine and homophthalic acid

Wang

Fan

et al. 2015

Acta Crystallogr C

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“…We have collected the structures and magnetism of end‐on azide‐bridged Cu II complexes reported previously 16. 17, 22–24, 26, 30, 41, 48–62 Comparison of the magnetic property of complexes 1 – 5 is shown in Table 3 and Figure 7. The magnetic data of related complexes are given in Table S1 and Figure S28 in the Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

In Situ Formation of Semichelating Ligands: A Strategy for Tuning the Magnetic Coupling in Azide‐Bridged Copper(II) Complexes

2013

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“…8 K in χ m only when the applied magnetic field is below 0.7 T (figure 8), suggesting the presence of an antiferromagnetic coupling for H < 0.7 T. and zj = -0.23 cm -1 [20]. A second compound behaves as a metamagnet with strong ferromagnetic intra-chain interactions and weak antiferromagnetic inter-chain interactions and shows a spin-glass like behaviour [18]. The third compound also exhibits a strong intra-chain ferromagnetic Cu-Cu interaction [19].…”

Section: Spectroscopy and Magnetismmentioning

confidence: 99%

Azide, water and adipate as bridging ligands for Cu(II): Synthesis, structure and magnetism of (μ4-adipato-κ-O)(μ-aqua)(μ-azido-κN1,N1)copper(II) monohydrate

et al. 2016

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Abstract:The synthesis, characterization, single crystal structure and magnetic properties of the compound [(CuN 3 (OH 2 )) 2 (adp)] n (1) are presented, in which adp stands for the adipate(2-) anion.This compound consists of layers containing chains of six-coordinated Cu(II) ions; the chains are connected by µ 4 -adipate anions. The magnetically interesting part of the compound is the Cu(II) chain, built from 3 bridging ligands, i.e. a water ligand, an azide anionic ligand bridging by using a terminal N atom to connect 2 Cu(II) ions, and one symmetrically bridging carboxylato group of adipate; the other end of the tetradentate adipate anions symmetrically connect the chains, forming the layers.From the magnetic point of view the compound is considered as a Cu(II) chain with a quite unusual, symmetrical water bridge, the µ-syn-syn carboxylate and the µ-N 3 bridge. The bridging water also hydrogen bonds to a terminal N of a nearby azido ligand. Magnetic susceptibility measurements show that 1 presents moderate ferromagnetic intrachain interactions (J chain = +38.4 cm -1 ) with a metamagnetic behaviour for the inter-chain interaction with a critical field of 0.7 T.

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Two azido-bridged copper(ii) coordination polymers with isonicotinate-N-oxide and picolinate-N-oxide acting as co-ligands

Cited by 29 publications

References 62 publications

Structure and magnetic properties of a copper(II) coordination polymer based on azide, pyridine and homophthalic acid

Structure and magnetic properties of a copper(II) coordination polymer based on azide, pyridine and homophthalic acid

In Situ Formation of Semichelating Ligands: A Strategy for Tuning the Magnetic Coupling in Azide‐Bridged Copper(II) Complexes

Azide, water and adipate as bridging ligands for Cu(II): Synthesis, structure and magnetism of (μ4-adipato-κ-O)(μ-aqua)(μ-azido-κN1,N1)copper(II) monohydrate

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