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Magnetochemistry, Volume 11, Issue 4

April 2025 - 13 articles

Cover Story: A series of isostructural lanthanoid coordination polymers based on a ditopic bis-picolinate ligand were synthesized. The compounds contain lanthanoid cations in a tricapped trigonal prismatic nonacoordinated geometry, bridged by segmented bischelating ligands to yield an extended orthorhombic crystal structure with triangular cavities. The magnetic measurements show that the Dy derivative exhibits slow relaxation properties in the absence of an external field, following quantum tunneling and the Orbach mechanisms of relaxation. This compound, together with the Gd and Tb analogues, also exhibits slow relaxation properties under an applied DC magnetic field. The Gd derivative is one of the few reported Gd(III) compounds exhibiting slow relaxation of magnetization. View this paper
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Articles (13)

  • Article
  • Open Access
2,167 Views
24 Pages

Copper(II)-Promoted Reactions of α-Pyridoin Oxime: A Dodecanuclear Cluster and a 2D Coordination Polymer

  • Konstantina H. Baka,
  • Luís Cunha-Silva,
  • Catherine P. Raptopoulou,
  • Vassilis Psycharis,
  • Dionissios Papaioannou,
  • Mark M. Turnbull,
  • Zoi G. Lada,
  • Spyros P. Perlepes and
  • Theocharis C. Stamatatos

The reaction of CuCl2∙2H2O, (E)-2-hydroxy-1,2-di(pyridin-2-yl)ethanone oxime (α-pyroxH2) and Et3N in refluxing MeOH gave complex [Cu12Cl12(mpydol)4(pydox)2(MeOH)4] (1), where mpydol2− is the dianion of 1,2-dimethoxy-1,2-di(pyridin-2...

  • Article
  • Open Access
1 Citations
2,612 Views
18 Pages

Cobalt(II) and Nickel(II) Cubane {M4O4} Complexes Derived from Di-2-pyridyl Ketone and Benzoate: Syntheses, Structure and Magnetic Properties

  • Carolina Pejo,
  • Santiago Valiero,
  • Carlos Rojas-Dotti,
  • Guilherme P. Guedes,
  • Joan Cano,
  • Miguel A. Novak,
  • Raúl Chiozzone,
  • Maria G. F. Vaz and
  • Ricardo González

Two tetranuclear complexes were obtained by a self-assembly process employing di-2-pyridyl ketone ((py)2CO), benzoate and M(NO3)2 (M = Co and Ni). The compounds [M4{(py)2C(OH)O}4(O2CPh)4], where {(py)2C(OH)O}− is the monoanion of the gem-diol f...

  • Article
  • Open Access
1 Citations
1,843 Views
16 Pages

The synergistic application of magnetic fields and iron oxide nanorod particles (IONPs) presents a novel therapeutic approach for inducing lysosome-dependent cell death (LDCL) via magneto-mechanical force (MMF). This study demonstrates the efficacy o...

  • Article
  • Open Access
1 Citations
2,415 Views
12 Pages

The Impact of Ho Addition on the Microstructural Features and Magnetic Performances of Sintered NdFeB Magnets

  • Xin-De Zhu,
  • Wei-Ming Liu,
  • Fei Wang,
  • Zhao-Pu Xu,
  • Qian Wang,
  • Xiao-Qian Gu,
  • Meng Li,
  • Ya Jiang,
  • Feng-Sheng Xue and
  • Mei Wang

Two NdFeB magnets with distinct compositions were fabricated via an identical process. One magnet was doped with 2.5 wt.% of Ho, whereas the other remained undoped. Subsequently, grain boundary diffusion was performed on both magnets using metallic T...

  • Article
  • Open Access
3 Citations
1,683 Views
17 Pages

Lanthanoid Coordination Polymers Based on Homoditopic Picolinate Ligands: Synthesis, Structure and Magnetic Properties

  • Verónica Jornet-Mollá,
  • Carlos J. Gómez-García,
  • Miquel J. Dolz-Lozano and
  • Francisco M. Romero

A ditopic ligand (H2L1), containing picolinate subunits segmented by ethynylene bridges, has been used in the synthesis of a series of isostructural coordination polymers, formulated as [(CH3)2NH2][Ln(L1)2]·H2O·CH3COOH, where Ln = Eu (1...

  • Article
  • Open Access
2 Citations
1,583 Views
19 Pages

In the paper, a hybrid magnetic fluid is prepared by adding carbon nanotubes to pure ferrofluid to improve its thermal conductivity. Furthermore, an electromagnet is used as magnetic source equipment, and the magnetic field strength in the air gap of...

  • Article
  • Open Access
1 Citations
1,245 Views
15 Pages

FeSiBCuNb powders, produced via the gas–water atomization method, typically exhibit a broad particle size distribution and high sphericity. Nanocrystalline soft magnetic composites derived from these powders demonstrate exceptional service stab...

  • Article
  • Open Access
2 Citations
927 Views
17 Pages

Impact of Magnetic Field on ROS Generation in Cu-g-C3N4 Against E. coli Disinfection Process

  • Elkin Darío C. Castrillon,
  • Santiago Correa and
  • Yenny P. Ávila-Torres

The antibacterial activity of g-C3N4 and Cu-g-C3N4 was evaluated against E. coli, with their disinfection capabilities influenced by structural characteristics, photocatalytic properties, and modulation under a static magnetic field. The incorporatio...

  • Article
  • Open Access
3 Citations
1,353 Views
16 Pages

Addressing aquatic phosphate pollution requires advanced materials that combine high selectivity with recyclability. Here, we present a hierarchically structured composite integrating Mg-Fe layered double hydroxides (LDHs) with magnetic biochar deriv...

  • Article
  • Open Access
1,308 Views
9 Pages

The reaction of nitronyl nitroxide biradical NITPhMeImbis(5-(2-methylimidazole)-1,3-bis(1′-oxyl-3′-oxido-4′,4′,5′,5′-tetramethyl-4,5-hydro-1H-imidazol-2-yl)-benzene) with Dy(hfac)3 and La(hfac)3 (hfac = hexafluoroa...

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Magnetochemistry - ISSN 2312-7481