منابع مشابه
Correlation of Zero-Field Splittings and Site Distortions. IX. Fe and Cr in /J-Ga203
EPR of Fe + in distorted tetrahedral sites in single crystals of /?-Ga203 has been measured for the first time, and the second-order zero-field splitting (ZFS) parameters and principal axes directions were determined. The data for the sixfold coordinated Fe 3 + are in good agreement with results from the literature. Comparison of the ZFS patterns with those calculated from the crystal structure...
متن کاملCorrelation of Zero Field Splittings and Site Distortions V. Mn in Cs2Zn3S4
Dedicated to Professor A Ifred Klemm on the occasion of his 70th birthday In platelets of Cs2Zn3S4 with about 4% of the Zn substituted by Mn two nonequivalent centers of isolated Mn + were observed in addition to a broad EPR signal near g = 2 which is assigned to clusters of interconnected MnS4 units. The fine structure and hyperf ine structure parameters for the single-ion centers (all in unit...
متن کاملLegendre’s Defect Zero Theorem
Lemma 1. Let 4ABC be a triangle with acute angles ∠A and ∠C. Drop a perpendicular from B to the base line ←→ AC, and let F be the foot. Then A ∗ F ∗ C. Proof. Observe that F 6= A since ∠BAC is not a right angle. Likewise F 6= C. So by Axiom B-3, one of A,F,C is between the other two. If F ∗A ∗C then ∠BAC is external to ∠BFA, so ∠BAC > ∠BFA which contradicts the assumption that ∠A is acute. Like...
متن کاملFirst-principle computation of zero-field splittings: application to a high valent Fe(IV)-oxo model of nonheme iron proteins.
We report the computational implementation of a combined spin-density-functional theory and perturbation theory (SDFT-PT) methodology for the accurate calculation of zero-field splittings (ZFS) in complexes of the most diverse nature including metal centers in proteins. We have applied the SDFT-PT methodology to study the cation of the recently synthesized complex [Fe(IV)(O)-(TMC)(NCCH(3))](OTf...
متن کاملA strong convergence theorem for solutions of zero point problems and fixed point problems
Zero point problems of the sum of two monotone mappings and fixed point problems of a strictly pseudocontractive mapping are investigated. A strong convergence theorem for the common solutions of the problems is established in the framework of Hilbert spaces.
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1959
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.45.2.172