Water-stable manganese(IV) complex of a N2O4-donor non-Schiff-base ligand: synthesis, structure, and multifrequency high-field electron paramagnetic resonance studies.
A novel water-stable (t1/2 ∼ 6.8 days) mononuclear manganese(IV) complex of a hexacoordinating non-Schiff-base ligand (H4L) with N2O4-donor atoms has been synthesized and characterized crystallographically. High-frequency electron paramagnetic resonance experiments performed on a single crystal reveal a manganese(IV) ion with an S = 3/2 ground spin state that displays a large single-ion anisotropy, setting the record of mononuclear manganese(IV) complexes reported so far. In addition, spin-echo experiments reveal a spin-spin relaxation time T2 ∼ 500 ns.
Department of Chemistry, Jadavpur University , Kolkata 700 032, India.
Malay
M
Dolai
Asma
A
Amjad
Mainak
M
Debnath
Johan
J
van Tol
Enrique
E
del Barco
Mahammad
M
Ali
D003461:Crystallography; D008024:Ligands; D017895:Manganese Compounds / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D009589:Nitrogen Oxides / Q000737:chemistry*; D014867:Water
D008024:Ligands; D017895:Manganese Compounds; D009589:Nitrogen Oxides; D014867:Water; C015167:nitrogen tetroxide