Double Switching of a Magnetic Coordination Framework through Intraskeletal Molecular Rearrangement

Critical behavior of the Mn2[Nb(CN)8] molecular magnet

“…A powder sample of Mn 2 [Nb(CN) 8 21 Magnetic ac susceptibility measurement was carried out with the Lake Shore 7225 instrument in the temperature range of 4.2-250 K, in zero dc field, and with H ac = 5 Oe for an array of frequencies f = 10, 80, 625, 1000 Hz. Magnetic measurements were carried out with MPMS SQUID magnetometer.…”

“…The present work reports a comprehensive analysis of the critical behavior of a novel molecular magnet based on Mn II and [Nb IV (CN) 8 ]. 21 8 ]· 2H 2 O} n , where "pydz" stands for pyridazine (C 4 H 4 N 2 ). Single crystal x-ray diffraction at room temperature was solved with the monoclinic system with space group P 2 1 /c and with unit cell parameters: a = 10.6052(1)Å, b = 15.5751(2)Å, c = 14.3869(2)Å, and β = 108.285(1) • .…”

“…In the pyridazine ligand (C 4 H 4 N 2 ), one nitrogen atom is noncoordinating and hydrogen-bonded to the aqua ligand of Mn2. 21 Because of the lack of coordination for these two nitrogen atoms, we expect that their vicinities may host muon stopping sites.…”

“…21 The first stage of dehydration involving the removal of the crystallization water and two aqua ligands enhances the intranetwork exchange interaction and triggers the increase of magnetic ordering temperature up to 68 K. Further dehydration leading to the removal of the remaining two water molecules affects the increase of the critical temperature up to 100 K. The dehydration process is fully reversible, which places the compound among the technologically promising materials.…”

Host–Guest Hydrogen Bonding Varies the Charge‐State Behavior of Magnetic Sponges

“…[1][2][3][4][5] This is because molecular magnets possess acharacteristic flexibility not only in their structures [6,7] but also in their electronic/spin states and electronic/magnetic correlation. [1][2][3][4][5] This is because molecular magnets possess acharacteristic flexibility not only in their structures [6,7] but also in their electronic/spin states and electronic/magnetic correlation.…”