A novel heterospin tetranuclear MnII -type complex incorporating a macrocyclic oxamide [Mn(CuL)3](ClO4)2: synthesis, crystal structure and magnetic properties

Liu, Zhiliang; Zhang, Deqing; Luo, Jie-Lin; Jiang, Zong‐Hui; Liao, Dai‐Zheng; Zhu, Daoben

doi:10.1080/00958970410001704573

Cited by 5 publications

(2 citation statements)

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“…So far, only two binuclear complexes derived from [CuL] and its derivative have been crystallographically characterized because of synthetic difficulties . From the comparison of a variety of polynuclear complexes from [CuL 1 ] 9,13-15,19 and [CuL 2 ], − ,− it seems that the huge bulk of the complex precursor [CuL] hinders the ability to obtain the crystal and to determine the structural extent of the polynuclear complex. However, by suitable choice of the co-ligand, we can improve the crystallization of the products and also can obtain the extended structures.…”

Section: Resultsmentioning

confidence: 99%

“…Robertson and his colleagues first reported a mononuclear paramagnetic copper(II) complex of the macrocyclic oxamide ([CuL 1 ], Scheme 1) and obtained a trinuclear copper(II) complex derived from it . After this, a series of bi-, − tetra-, − penta-, − hexa-, and nonanuclear 1- and 2D complexes producedusing the mononuclear copper(II) precursors of macrocyclic oxamides (Scheme ) have been reported. As far as the oxamido-bridged macrocyclic complexes are concerned, only few examples based on the [M II Cu II (μ-oxamidato)] 13,20 or [M II Cu II 3 (μ-oxamidato) 3 ] 15-16 unit have been structurally characterized.…”

Section: Introductionmentioning

confidence: 99%

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Heteronuclear Complexes of Macrocyclic Oxamide with Co-ligands: Syntheses, Crystal Structures, and Magnetic Properties

Zhu

Zhang

et al. 2007

Inorg. Chem.

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Four heteronuclear complexes Mn(CuL)2(SCN)2 (1), {[Mn(CuL)2(mu-dca)2].2H2O}n (2), Zn(CuL)2(SCN)2 (3), and [Fe(CuL)(N3)2]2 (4) incorporating macrocyclic oxamide ligands have been synthesized and structurally characterized. L is the dianion of diethyl 5,6,7,8,15,16-hexahydro-6,7-dioxodibenzo[1,4,8,11]-tetraazacyclotetradecine-13,18-dicarboxylate, and dca is the dicyanamide. The structure of 1 or 3 consists of oxamido-bridged trinuclear [MIICuII2] molecules (for 1, M is the manganese(II) ion, and for 3, M is the zinc(II) ion). Both of them consist of 1D supramolecuar chains via pi-pi interactions. The structure of 2 also has the oxamido-bridged trinuclear [MnIICuII2] structure units and consists of 2D layers formed by the linkage of copper(II) and manganese(II) atoms via the oxamido and mu1, 5-dca bridges. Complex 4 consists of oxamido-bridged tetranuclear [FeII2CuII2] molecules and arranges in 1D chains. Different co-ligands may result in different structures in this macrocyclic oxamide system. The variable-temperature magnetic susceptibility measurements (2-300 K) of 1 and 2 both show the pronounced antiferromagnetic interactions between the copper(II) and manganese(II) ions.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heteronuclear Complexes of Macrocyclic Oxamide with Co-ligands: Syntheses, Crystal Structures, and Magnetic Properties

Zhu

Zhang

et al. 2007

Inorg. Chem.

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Polynuclear Complexes of Macrocyclic Oxamide with Thiocyanate: Syntheses, Crystal Structures and Magnetic Properties

et al. 2009

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Dibenzotetraazamacroheterocycles: Synthesis and properties. (Review)

Kulikov

Pavlovsky

Андронати

2005

Chem Heterocycl Compd

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Data on the synthesis, complexing ability, practical applications, and biological activity of dibenzotetraazamacroheterocycles of the azacrown ether, amide, and azomethinedibenzotetraazacycloalkane types and also dibenzotetraazamacroheterocycles containing amide and azomethine fragments are classified and analyzed.At present the chemistry of nitrogen macrocycles is developing at a very high rate. Many of the compounds are highly effective extractants for metal ions [1-3], find widespread use as contrast agents for magnetic resonance imaging [4][5][6][7][8], and can also be used as precursors in the biosynthesis of certain types of alkaloids [9] and also as ion-selective [10] and fluorescent [11] receptors and as agents for the transport of ions through a liquid membrane in dialysis and electrodialysis [12,13]. Chiral macrocyclic tetraamides are used as stationary phase in liquid chromatography [14]. The potentialities of nitrogen macrocycles in theoretical and practical respects have not been exhausted, and further research in the field is promising.In the last 15 years there have been a fairly large number of monographs and reviews in which aspects of the synthesis, properties, and applications of azamacroheterocycles and their metal complexes have been touched upon [15][16][17][18][19][20][21][22][23][24][25][26]. However, there have been significantly fewer publications devoted to the various classes of dibenzotetraazamacroheterocycles (e.g., dibenzotetraaza [14]annulenes [27][28][29], macrocyclic Schiff bases based on 2,6-diformylphenols [30]). Dibenzotetraazamacroheterocycles have found use as effective extractants for metal ions and as spectrophotometric agents [31][32][33], are used in the design of new magnetic materials [34], etc. To fill the gap we considered it desirable to analyze existing published material on the synthesis, complexation, and practical applications of dibenzotetraazamacrocycles of the azacrown ether, amide, azomethine, and dibenzotetraazacycloalkane types and also dibenzotetraazamacrocycles containing amide and azomethine fragments.

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A novel heterospin tetranuclear Mn^II -type complex incorporating a macrocyclic oxamide [Mn(CuL)₃](ClO₄)₂: synthesis, crystal structure and magnetic properties

Cited by 5 publications

References 22 publications

Heteronuclear Complexes of Macrocyclic Oxamide with Co-ligands: Syntheses, Crystal Structures, and Magnetic Properties

Heteronuclear Complexes of Macrocyclic Oxamide with Co-ligands: Syntheses, Crystal Structures, and Magnetic Properties

Polynuclear Complexes of Macrocyclic Oxamide with Thiocyanate: Syntheses, Crystal Structures and Magnetic Properties

Dibenzotetraazamacroheterocycles: Synthesis and properties. (Review)

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