RT Journal Article
T1 Unusual Magnetic Behaviors and Electronic Configurations Driven by Diverse Co(II) or Mn(II) MOF Architectures
A1 Bernini, María Celeste
A1 Romero de Paz, Julio
A1 Snejko, Natalia
A1 Sáez Puche, Regino
A1 Gutierrez Puebla, Enrique
A1 Monge, María Ángeles
AB Five novel metal organic frameworks were obtained by hydrosolvothermal reactions using the hexafluorisopropylidenebis(benzoic) acid (H2hfipbb) as linker and Co(II) or Mn(II) ions as connectors. [Co2(Hhfipbb)-(TEA)], compound 1 (TEA = triethanolamine trianion) with a threedimensional (3D) framework, and a tpu net; [Co1.5(hfipbb)2]·HN(CH2CH3)3 and [Co3(hfipbb)2]·2{HN(CH2CH3)3}, compounds 2 and 2-a, respectively, both with two-dimensional structure, sql topologies, and different layer packings. Compounds 3 and 4, having the general formula [M2(hfipbb)2]·C7H8,where M = Co (3) or Mn (4), have 3D frameworks with an sqc topology. A deep analysis of the magnetic measurements reveals different striking magnetic behaviors resulting from diverse secondary building unit and frameworkarchitectures. Compound 1 presents canted antiferromagnetic chains, compound 2 contains ferromagnetic linear trimeric clusters, and compound 3 exhibits ferromagnetic chains. For the three compounds, a 3D canted antiferromagnetic structure takes place at ∼8 K by means of weak magnetic interactions between the mentioned magnetic units. Such long-range magnetic order is precluded with the application of a high enough magnetic field. Compound 4 evidenced intrachain antiferromagnetic interactions.
PB American Chemical Society
SN 0020-1669
YR 2014
FD 2014
LK https://hdl.handle.net/20.500.14352/99758
UL https://hdl.handle.net/20.500.14352/99758
LA eng
NO María Celeste Bernini, Julio Romero de Paz, Natalia Snejko, Regino Sáez-Puche, Enrique Gutierrez-Puebla, and María Ángeles MongeInorganic Chemistry 2014 53 (24), 12885-12895DOI: 10.1021/ic501898x
DS Docta Complutense
RD 6 abr 2025