TY - JOUR
T1 - Structural versatility driven by the flexible di(4-pyridyl) sulfide ligand: from mononuclear cobalt(II) species to sheet-like copper(II) architectures
AU - Reis, Natalia V.
AU - Vanda Marinho, Maria
AU - Simões, Tatiana Renata G.
AU - Metz, Karina C.
AU - Vaz, Raphael C.
AU - Oliveira, Willian X. C.
AU - Pereira, Cynthia L. M.
AU - Barros, Wdeson P.
AU - Pinheiro, Carlos B.
AU - Giese, Siddhartha O. K.
AU - Hughes, David L.
AU - Pirota, Kleber R.
AU - Nunes, Wallace C.
AU - Stumpf, Humberto O.
PY - 2019/10
Y1 - 2019/10
N2 - The reaction between the ligand di(4-pyridyl)sulfide(dps) and two salts of divalent first row transition metals (M= Co2+, and Cu2+) resulted in three new compounds with formula: [Co(dps)4(H2O)2](ClO4)2⋅H2O (1), [Cu(dps)2(dmso)2]n(ClO4)2n (2) and [{Cu(dps)2(dmso)2}{Cu(dps)2(dmso)(H2O)}]n(ClO4)4n⋅2nH2O⋅n(dmso) (3). Crystal structures of 1-3 were determined using single-crystal X-ray diffraction. Crystal structures of 1 consists of mononuclear complexes, in which the dps ligand acts in a monodentate mode through one of the pyridyl nitrogen atoms. Compounds 2 and 3 present the dps ligand bridging metal centers leading to bidimensional coordination polymers. Magnetic properties in the polycrystalline samples of 1-3 in the 300 to 2K temperature range were investigated. Complex 1 exhibits a field-induced slow magnetization behavior and behaves as a single-ion magnet with an effective energy barrier for the reversal of magnetization of 22.9 (1.1) K andτ0= 5.3(1.2)x10−7 s.
AB - The reaction between the ligand di(4-pyridyl)sulfide(dps) and two salts of divalent first row transition metals (M= Co2+, and Cu2+) resulted in three new compounds with formula: [Co(dps)4(H2O)2](ClO4)2⋅H2O (1), [Cu(dps)2(dmso)2]n(ClO4)2n (2) and [{Cu(dps)2(dmso)2}{Cu(dps)2(dmso)(H2O)}]n(ClO4)4n⋅2nH2O⋅n(dmso) (3). Crystal structures of 1-3 were determined using single-crystal X-ray diffraction. Crystal structures of 1 consists of mononuclear complexes, in which the dps ligand acts in a monodentate mode through one of the pyridyl nitrogen atoms. Compounds 2 and 3 present the dps ligand bridging metal centers leading to bidimensional coordination polymers. Magnetic properties in the polycrystalline samples of 1-3 in the 300 to 2K temperature range were investigated. Complex 1 exhibits a field-induced slow magnetization behavior and behaves as a single-ion magnet with an effective energy barrier for the reversal of magnetization of 22.9 (1.1) K andτ0= 5.3(1.2)x10−7 s.
U2 - 10.1016/j.poly.2019.07.005
DO - 10.1016/j.poly.2019.07.005
M3 - Article
SN - 0277-5387
VL - 171
SP - 203
EP - 211
JO - Polyhedron
JF - Polyhedron
ER -