Magnetic properties of a manganese(II) trinuclear complex involving a tridentate Schiff-Base ligand.
The Schiff condensation of 2-pyridinecarboxaldehyde N-oxide with 2-aminophenol gave a tridentate ligand, abbreviated as Hpoxap. This ligand bears the functionality of a terminating group in a trinuclear complex [Mn(poxap)Mn(ac)4Mn(poxap)], where ac- is the acetate bridge. The magnetic data were treated simultaneously during the fitting procedure with the spin Hamiltonian containing isotropic exchange, the zero-field splitting parameters, and the molecular-field correction and resulted in JMn-Mn/hc = -4.73 cm-1, gMn(t) = 1.96, DMn(t)/hc = -0.45 cm-1, and zj/hc = +0.45 cm-1 with ground state S = 5/2, where t = terminal atom. At low temperature, the features of a ferromagnetic correlation become evident.
Herchel
Radovan
R
Department of Chemistry, University of SS. Cyril and Methodius, SK-917 01 Trnava, Slovakia.
Boca
Roman
R
Gembický
Milan
M
Falk
Karsten
K
Fuess
Hartmut
H
Haase
Wolfgang
W
Svoboda
Ingrid
I
D000627:Aminophenols / Q000737:chemistry; D003497:Cyclic N-Oxides / Q000737:chemistry; D008024:Ligands; D008280:Magnetics; D008345:Manganese / Q000737:chemistry*; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry; D012545:Schiff Bases / Q000737:chemistry*; D013696:Temperature
C520108:2-(2-hydroxyphenyliminomethyl)pyridine N-oxide; C520107:2-pyridinecarboxaldehyde N-oxide; D000627:Aminophenols; D003497:Cyclic N-Oxides; D008024:Ligands; D009942:Organometallic Compounds; D011725:Pyridines; D012545:Schiff Bases; C027667:2-aminophenol; D008345:Manganese