A copper(II) coordination polymer with alternating double EO-azido bridges and mixed EO-azido/alkoxo double bridges

Liu, Cai‐Ming; Zhang, Deqing; Zhu, Daoben

doi:10.1016/j.ica.2008.05.024

Cited by 15 publications

(6 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At ambient temperature, 3 was found to be paramagnetic with an isotropic g factor (g = 1.97), which is similar when compared to other copper complexes with dpk derivatives, where isotropic factors varied from g = 2.00-2.06. [32,33] An effective magnetic moment of 1.81 μ B per Cu II ion, as expected for non-interacting Cu II d 9 ions. [25] The magnetic moment increased to 1.96 μ B at 40 K. The μ eff vs. T (K) plot shows an increase in μ eff as the temperature is lowered, followed by a steep drop at low temperatures (40 K) which is characteristic of ferromagnetic coupling [34] and is confirmed by the positive J value of +45.2 cm -1 .…”

Section: Magnetic Measurementsmentioning

confidence: 82%

Di(2‐pyridyl) Ketone Complexes of Cu^I‐ and Cu^II‐Containing Iodide and Thiocyanate Ligands: An Unusual Case of a Mixed‐Aldol Condensation

et al. 2010

View full text Add to dashboard Cite

Complexes containing di(2‐pyridyl) ketone (dpk) as a bi‐ (N,N) and tridentate (N,N,O) ligand have been synthesised1,2 and characterized by spectral and structural studies. Products 1 and 2 are polymorphs of the polymeric copper(I) complex [Cu(dpk)(NCS)]n containing dpk with thiocyanate anions which bridge to form a one‐dimensional continuous polymer chain. The novel dinuclear copper(II) complex [Cu2(dpk·acetone)2(NCS)2] (3) was formed when 1 and 2 were allowed to stand in the supernatant. In this instance it appears that a transition‐metal‐promoted aldol condensation has occurred between the solvent acetone and the ketone carbonyl of dpk to produce the novel ligand, dpk·acetone. Product 3 contains two five‐coordinate copper(II) ions, both with trigonal bipyramidal coordination, bridged through deprotonated hydroxy groups on each dpk·acetone. A chemical rationalisation for the formation of 3 is proposed. The dinuclear copper(I) complex [Cu2(dpk)2I2] (4) is also reported, which contains two four‐coordinate copper(I) ions that are bridged together through iodide ions.

show abstract

Section: Magnetic Measurementsmentioning

confidence: 82%

Di(2‐pyridyl) Ketone Complexes of Cu^I‐ and Cu^II‐Containing Iodide and Thiocyanate Ligands: An Unusual Case of a Mixed‐Aldol Condensation

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Work from other groups involves complexes [Cu 2 (N 3 ) 3 {(py) 2 -C(OMe)O}] n (69, 1D) [102] with alternating double end-on azido and mixed end-on azido/alkoxido bridges, [Cu 2 Cl 3 {(py) 2 C(OMe)O}] n (70, 1D), [56c] which is structurally similar to 69 but has chloride (instead of azido) bridges, and its polymorph formulated as [Cu 4 Cl 6 {(py) 2 C(OMe)-O} 2 ] n (71). [103] The polycrystalline, X-band EPR spectrum of 71 at 4.1 K shows an intense broad signal spread over 2900 G with g = 2.34, indicative of a bulk concentration of Cu II ions having strong ferromagnetic interactions.…”

Section: Use Of (Py) 2 Co For the Preparation Of Coordination Polymersmentioning

confidence: 99%

Adventures in the Coordination Chemistry of Di‐2‐pyridyl Ketone and Related Ligands: From High‐Spin Molecules and Single‐Molecule Magnets to Coordination Polymers, and from Structural Aesthetics to an Exciting New Reactivity Chemistry of Coordinated Ligands

et al. 2009

View full text Add to dashboard Cite

The coordination chemistry of di-2-pyridyl ketone and related ligands is reviewed. An outline of the variety of such ligands is presented. References are given to methods for the synthesis of ligands that are not available on the market. The activation of the carbonyl group(s) of some of the ligands towards further reactions seems to be an emergent area of synthetic inorganic chemistry. The coordination chemistry of each ligand with metals is briefly described. Emphasis is placed on structural features and physical properties (mainly magnetic) of the resulting metal clusters and coordination polymers. The structural diversity of the complexes stems from the ability of the deprotonated diol-or hemiketal-type Organization of This Microreview and General InformationThis Microreview presents a focused overview of the coordination chemistry of ligands with the general formulae X-CO-X, X-CO-Y, X-CO-CO-X, and X-CO-X-CO-X, where X and Y are donor groups. We mainly describe the polynuclear metal complexes (clusters) and coordination polymers that have derived from the use of these ligands and the organic chemistry of their metal complexes. From the viewpoint of properties, emphasis is placed on the magnetism of the metal complexes. Much of the chemistry, both published and unpublished, that is reported comes from our group; however, detailed reference to all appropriate work by others is provided. The Microreview aims not to be comprehensive in terms of a discussion of every known cluster or coordination polymer containing a ligand derived from the above-mentioned molecules; rather, it aims to provide [ ‡] ligands to adopt a variety of bridging coordination modes depending on the number of carbonyl groups, the nature of the extra donor groups in the molecule and on the reaction conditions. Employment of a second organic or inorganic ligand in this chemistry gives an extraordinary structural flexibility in the resulting mixed-ligand systems. The initial use of 1,1Ј-carbonyldiimidazole and 1,1Ј-oxalyldiimidazole in copper(II) chemistry, which leads to unprecedented coordination polymers containing alcoholysis and/or hydrolysis "fragments" of the ligands, is also illustrated.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009) the reader with some idea of the range of chemistry that has been carried out (and indeed remains still to do) with these ligands. The article contains eight sections, including this one. The next section is introductory: the reader can find brief, general information on the two classes of compounds that are frequently mentioned in this Microreview, namely metal clusters and polymers, as well as a short discussion of the organic chemistry of metal complexes, which is currently a popular topic in inorganic chemistry. The last part of Section 2 provides a "hors d'oeuvre" of the ligands that are discussed in detail in Sections 3-7. Section 8 provides initial conclusions and perspectives for future research. Sections 2 and 3 are divided into parts for clarity. The organization of this ...

show abstract

“…The CuÁ Á ÁCu separation in the dimer is 3.304 Å. These values lie in the typical range for double EO azido-bridging copper(II) complexes (2.9004-3.5034 Å) [12,23,[27][28][29][30]. In 1 each dinuclear unit is further linked through single EE azide bridges to four neighboring dimers, leading to a neutral 2D network with a pseudo-honeycomb (6, 3) topology (Fig.…”

mentioning

confidence: 73%

A novel 2D copper(II) coordination polymer with bidentate coligands and alternating double EO- and single EE-azido bridges

Zhu

Song

et al. 2009

Inorganic Chemistry Communications

View full text Add to dashboard Cite

A copper(II) coordination polymer with alternating double EO-azido bridges and mixed EO-azido/alkoxo double bridges

Cited by 15 publications

References 49 publications

Di(2‐pyridyl) Ketone Complexes of Cu^I‐ and Cu^II‐Containing Iodide and Thiocyanate Ligands: An Unusual Case of a Mixed‐Aldol Condensation

Di(2‐pyridyl) Ketone Complexes of Cu^I‐ and Cu^II‐Containing Iodide and Thiocyanate Ligands: An Unusual Case of a Mixed‐Aldol Condensation

Adventures in the Coordination Chemistry of Di‐2‐pyridyl Ketone and Related Ligands: From High‐Spin Molecules and Single‐Molecule Magnets to Coordination Polymers, and from Structural Aesthetics to an Exciting New Reactivity Chemistry of Coordinated Ligands

A novel 2D copper(II) coordination polymer with bidentate coligands and alternating double EO- and single EE-azido bridges

Contact Info

Product

Resources

About

A copper(II) coordination polymer with alternating double EO-azido bridges and mixed EO-azido/alkoxo double bridges

Cited by 15 publications

References 49 publications

Di(2‐pyridyl) Ketone Complexes of CuI‐ and CuII‐Containing Iodide and Thiocyanate Ligands: An Unusual Case of a Mixed‐Aldol Condensation

Di(2‐pyridyl) Ketone Complexes of CuI‐ and CuII‐Containing Iodide and Thiocyanate Ligands: An Unusual Case of a Mixed‐Aldol Condensation

Adventures in the Coordination Chemistry of Di‐2‐pyridyl Ketone and Related Ligands: From High‐Spin Molecules and Single‐Molecule Magnets to Coordination Polymers, and from Structural Aesthetics to an Exciting New Reactivity Chemistry of Coordinated Ligands

A novel 2D copper(II) coordination polymer with bidentate coligands and alternating double EO- and single EE-azido bridges

Contact Info

Product

Resources

About

Di(2‐pyridyl) Ketone Complexes of Cu^I‐ and Cu^II‐Containing Iodide and Thiocyanate Ligands: An Unusual Case of a Mixed‐Aldol Condensation

Di(2‐pyridyl) Ketone Complexes of Cu^I‐ and Cu^II‐Containing Iodide and Thiocyanate Ligands: An Unusual Case of a Mixed‐Aldol Condensation