a r t i c l e i n f o On the basis of triangular-shaped [Mn 3 O] secondary building units, a novel two-dimensional (2D) manganese (III) complex, [NaMn III 3 O(sao) 3 (btec) 0.5 (H 2 O) 3 ]·1.25H 2 O (1) (H 2 sao = salicylaldoxime, H 4 btec = benzene-1,2,4,5-tetracarboxylate acid), was synthesized and structurally characterized. The structure of 1 consists of 2D coordination polymer based on [Mn...

We report the importance of anisotropic Coulomb interactions in DFT+U calculations electronic and magnetic properties Mn$_3$O$_4$. The effects Mn$^{2+}$ Mn$^{3+}$ are separately examined by defining two different sets Hubbard parameters: $U^{2+}$ $J^{2+}$ for $U^{3+}$ $J^{3+}$ Mn$^{3+}$. have a significant impact on physical Mn$_3$O$_4$ including local moments, canted angle, spontaneous moment,...

This study explored the feasibility of localized manganese-enhanced MRI (MEMRI) via 3 different routes of Mn administrations for visuotopic brain mapping of retinal, callosal, cortico-subcortical, transsynaptic and horizontal connections in normal adult rats. Upon fractionated intravitreal Mn injection, Mn enhancements were observed in the contralateral superior colliculus (SC) and lateral geni...

Syntheses, crystal structures, magnetic properties and catechol oxidation behavior are presented for [Mn3] and [Mn4] aggregates, [MnMn(II)(O2CMe)4(dmp)2(H2O)2]·2H2O (1·2H2O), [MnMn(II)(O2CCH2Cl)4(dmp)2(H2O)2]·H2O·MeOH (2·H2O·MeOH), [Mn(μ3-O)(dmp)4(μ-DMSO)(N3)(DMSO)(H2O)]ClO4·DMSO (3·ClO4·DMSO), and [Mn(μ3-O)(dmp)4(μ-DMSO)(ClO4)(DMSO)(H2O)]ClO4·DMSO (4·ClO4·DMSO), developed with single type liga...

In order to investigate the effects leading strong magnetoelectric coupling in type II multiferroic $\mathrm{Tb}\mathrm{Mn}{\mathrm{O}}_{3}$ we have studied thermal properties and temperature dependence of lattice vibrations ${\mathrm{TbMn}}^{16}{\mathrm{O}}_{3}$ its isotopically substituted counterpart ${\mathrm{TbMn}}^{18}{\mathrm{O}}_{3}$. Heat capacity measurements on powder samples reveale...

The (C(n)H(2n+6)N(2))[Mn(3)(HPO(3))(4)] (n = 3-8) compounds have been prepared by hydrothermal synthesis and characterized by X-ray diffraction data and spectroscopic techniques. The crystal structure of (C(3)H(12)N(2))[Mn(3)(HPO(3))(4)] has been solved from single-crystal X-ray diffraction. The unit-cell parameters are a = 9.502(1), b = 5.472(1), c = 14.523(4) A, beta = 95.01(3) degrees, monoc...

Hydrothermal reaction of manganese(II) thiocyanate with trans-1,2-bis(4-pyridyl)ethylene (bpe) in water leads to the formation of the new ligand-rich 1 : 3 (ratio metal/ligand) compound [Mn(NCS)2(bpe)2·(bpe)] (1-Mn). In the crystal structure the manganese cations are octahedrally coordinated by two thiocyanato anions and four bpe ligands and are linked into layers by the bpe ligands. Reaction o...

Electronic and molecular structures of [(X)mMn (μ-oxo)2Mn(Y)n] (X, Y = H2O, OH and O), which are Mn cluster models at catalytic sites of OEC, were studied by broken-symmetry unrestricted B3LYP method. Two paths from the S0 to S3 states of Kok cycle were investigated. One is a path starting from [Mn(II) (μ-oxo)2Mn(III)] at the S0 state, and another is from [Mn(III) (μ-oxo)2Mn(III)] at S0. Result...

OBJECTIVES The objectives of this study were to evaluate manganese (Mn)-containing welding fumes' exposure, assess urinary Mn as a biomarker for Mn exposure and investigate the correlation of Mn in air, total fumes and urinary Mn with pulmonary function indices in 118 welders and 37 unexposed controls from two regions in Iran, Assaluyeh and Borujen. METHODS Air samples were collected on mixed...