scholarly journals An Mn(II) cluster–based coordination framework derived from a C3 symmetric ligand: Synthesis, structure, and magnetic properties

2020 ◽  
pp. 174751982092601
Author(s):  
Yong-Jun Bian ◽  
Yuan Tian ◽  
Ai-Hua Zhang ◽  
Yong-Qiang Chen
Keyword(s):  
Magnetic Properties ◽  
Structural Analysis ◽  
Three Dimensional ◽  
Antiferromagnetic Coupling ◽  
Coordination Framework ◽  
Ligand Synthesis ◽  
Solvothermal Conditions

A new coordination framework {[Mn7(L)4(OH)2(H2O)4(DMA)4]·8H2O·6DMA}n (H3 L = 3,3′,3″-[1,3,5-benzenetriyltris(carbonylimino)]tris(benzoate); DMA = N,N-dimethylacetamide) is synthesized under mixed solvothermal conditions. Structural analysis reveals that this complex possesses a three-dimensional framework with (3,10)- c topology based on different [Mn6] clusters. Moreover, magnetic investigations suggest that intra-cluster Mn(II) ions exhibit antiferromagnetic coupling.

Crystal Structures, Topological Analyses, and Magnetic Properties of Manganese-Dihydroxyterephthalate Complexes

2010 ◽  
Vol 63 (2) ◽  
pp. 286 ◽  
Author(s):  
Qiang Gao ◽  
Fei-Long Jiang ◽  
Ming-Yan Wu ◽  
You-Gui Huang ◽  
Wei Wei ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crystal Structures ◽  
Magnetic Measurements ◽  
Antiferromagnetic Coupling ◽  
Solvothermal Conditions ◽  
3D Framework

Two manganese(ii)-dihydroxyterephthalate complexes were obtained under solvothermal conditions: [Mn(H2dhtp)(H2O)2] n (1) and [Mn2(dhtp)(H2O)2] n (2) (H4dhtp = 2,5-dihydroxyterephthalate). The 3D framework of complex 1 is constructed by H2dhtp ligands joined to 1D carboxylate-bridged Mn(ii) chains, which features a (4,4)-connected PtS net. Complex 2 contains a novel inorganic honeycomb Mn(ii)–O layer, which is further connected into a 3D (4,8)-connected flu net by dhtp ligands. Magnetic measurements of 1 and 2 were performed in the range of 2–300 K and the results indicate that antiferromagnetic coupling exits in the manganese(ii) centres of both complexes.

A three-dimensional cyanide-bridged heterometallic coordination polymer: poly[[diacetonitrilediaqua[μ2-3,6-bis(pyridin-2-yl)-1,2,4,5-tetrazine-κ4N1,N6:N3,N4]tetra-μ-cyanido-tetracyanidodimanganese(II)molybdate(IV)] dihydrate]

2014 ◽  
Vol 70 (11) ◽  
pp. 1029-1032 ◽  
Author(s):  
Xiao-Juan Xu
Keyword(s):  
Magnetic Properties ◽  
Ir Spectroscopy ◽  
Coordination Polymer ◽  
Elemental Analysis ◽  
Room Temperature ◽  
Three Dimensional ◽  
Antiferromagnetic Coupling ◽  
X Ray Diffraction ◽  
X Ray ◽  
Magnetic Investigation

A metal coordination polymer, {[Mn2Mo(CN)8(C12H8N6)(CH3CN)2(H2O)2]·2H2O}n, has been synthesized by the reaction of Mn(ClO4)2·6H2O with 3,6-bis(pyridin-2-yl)-1,2,4,5-tetrazine (bptz) and (Bu3N)3[Mo(CN)8] at room temperature. The polymer was characterized by IR spectroscopy, elemental analysis and X-ray diffraction, and the magnetic properties were also investigated. The X-ray diffraction analysis reveals that the compound is a new three-dimensional coordination polymer with a PtS-type network. Magnetic investigation shows antiferromagnetic coupling between adjacent Mn2+cations.

A three-dimensional coordination polymer of 3-(3,5-dicarboxybenzyloxy)benzoic acid with zinc

2013 ◽  
Vol 69 (8) ◽  
pp. 819-821 ◽  
Author(s):  
Ranjan Patra ◽  
Israel Goldberg
Keyword(s):  
Crystal Structure ◽  
Coordination Polymer ◽  
Benzoic Acid ◽  
Three Dimensional ◽  
Open Architecture ◽  
Coordination Numbers ◽  
Carboxylate Groups ◽  
Coordination Framework ◽  
Solvothermal Conditions ◽  
Polymeric Framework

The synthesis is reported of the tricarboxylic acid 3-(3,5-dicarboxybenzyloxy)benzoic acid (H3L) and the product of its reaction under solvothermal conditions with ZnIIcations, namely poly[[μ6-3-(3,5-dicarboxylatobenzyloxy)benzoato](dimethylformamide)-μ3-hydroxido-dizinc(II)], [Zn2(C16H9O7)(OH)(C3H7NO)]n, the formation of which is associated with complete deprotonation of H3L. Its crystal structure consists of a single-framework coordination polymer of the organicL3−ligand with ZnIIcations in a 1:2 ratio, with additional hydroxide and dimethylformamide (DMF) ligands coordinated to the ZnIIcentres. The ZnIIcations are characterized by coordination numbers of 5 and 6, being bridged to each other by hydroxide ligands. In the polymeric framework, the carboxylate- and hydroxy-bridged ZnIIcations are arranged in coordination-tessellated columns, which propagate along theaaxis of the crystal structure, and eachL3−ligand links to seven different ZnIIcentresviaZn—O bonds of two different columns. The coordination framework, composed of [Zn2(L)(OH)(DMF)]nunits, forms an open architecture, the channel voids within it being filled by the zinc-coordinating DMF ligands. This report provides the first structural evidence for the formation of coordination polymers with H3L viamultiple metal–ligand bonds through its carboxylate groups.<!?tpb=21.5pt>

Three-Dimensional Metal Azide Coordination Polymers with Amino Carboxylate Coligands: Synthesis, Structure, and Magnetic Properties

2009 ◽  
Vol 48 (11) ◽  
pp. 4674-4684 ◽  
Author(s):  
Zi-Lu Chen ◽  
Chun-Fang Jiang ◽  
Wei-Hong Yan ◽  
Fu-Pei Liang ◽  
Stuart R. Batten
Keyword(s):  
Magnetic Properties ◽  
Coordination Polymers ◽  
Three Dimensional ◽  
Metal Azide
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