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A discrete Cu-6(II) cluster and a 3D Mn-II-Cu-II framework based on assembly of Mn2Cu4 clusters: synthesis, structure and magnetic properties

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dc.contributor.author Chakraborty, Anindita
dc.contributor.author Escuer, Albert
dc.contributor.author Ribas, Joan
dc.contributor.author Maji, Tapas Kumar
dc.date.accessioned 2017-01-24T06:25:43Z
dc.date.available 2017-01-24T06:25:43Z
dc.date.issued 2016
dc.identifier.citation Chakraborty, A.; Escuer, A.; Ribas, J.; Maji, T. K., A discrete Cu-6(II) cluster and a 3D Mn-II-Cu-II framework based on assembly of Mn2Cu4 clusters: synthesis, structure and magnetic properties. Dalton Transactions 2016, 45 (39), 15523-15531 http://dx.doi.org/10.1039/c6dt03094g en_US
dc.identifier.citation Dalton Transactions en_US
dc.identifier.citation 45 en_US
dc.identifier.citation 39 en_US
dc.identifier.issn 1477-9226
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/2154
dc.description Restricted Access en_US
dc.description.abstract The synthesis, single-crystal structure characterization and detailed magnetic study of a homometallic hexanuclear Cu-II cluster [Cu-6(mu(3)-OH)(2)(ppk())6(H2O)2(NO3)(4)] (1) and a three-dimensional (3D) compound [{MnCu2(dpkO(2)H)(2)(dpkO(2))N-3}center dot(NO3)center dot H2O](n) (2) (ppk = phenyl-2-pyridyl ketoxime; dpk = di-2-pyridyl ketone) consisting of heterometallic Mn-II-Cu-II hexanuclear cores as secondary building units are reported in this paper. In compound 1, two symmetry-related Cu-3 triangles consisting of a hydroxido-bridged trinuclear unit, [Cu-3(mu(3)-OH)(ppk)(3)(H2O)(NO3)](+), are assembled through nitrate bridging giving rise to the homometallic Cu-6 cluster. Compound 2 contains heterometallic {(Mn2Cu4II)-Cu-II} cores, which are further connected to each other through an azido bridging ligand in all the crystallographic directions, resulting in a 3D metal-organic framework. Construction of such a heterometallic 3D framework from {(Mn2Cu4II)-Cu-II} units is until now, unknown. Magnetic studies of both 1 and 2 were performed in detail and both compounds show dominant antiferromagnetic interaction in the respective clusters. Compound 1 reveals significant spin frustration and anti-symmetric exchange interaction in the trinuclear cores, with a significantly high value of Jav (-655 cm(-1)). Furthermore, compound 2 exhibits a dominant antiferromagnetic interaction, which is also supported by an extensive magneto-structural correlation which considers the different magnetic pathways en_US
dc.description.uri 1477-9234 en_US
dc.description.uri http://dx.doi.org/10.1039/c6dt03094g en_US
dc.language.iso English en_US
dc.publisher Royal Society of Chemistry en_US
dc.rights @Royal Society of Chemistry, 2016 en_US
dc.subject Chemistry en_US
dc.subject Single-Molecule Magnet en_US
dc.subject Copper Inverse-9-Metallacrown-3 Compounds en_US
dc.subject Crystal-Structures en_US
dc.subject Magnetostructural Correlations en_US
dc.subject Partial Transformation en_US
dc.subject Carboxylate Chemistry en_US
dc.subject Di-2-Pyridyl Ketone en_US
dc.subject Spin Frustration en_US
dc.subject Metal-Complexes en_US
dc.subject Trinuclear en_US
dc.title A discrete Cu-6(II) cluster and a 3D Mn-II-Cu-II framework based on assembly of Mn2Cu4 clusters: synthesis, structure and magnetic properties en_US
dc.type Article en_US


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