Cu and Zn Substituted Silicon Clathrates with the Cubic Type‐II Structure: Synthesis and Characterization of Cs 8 Na 16 Cu 3.8 Si 132.2 and Cs 8 Na 16 Zn 6.9 Si 129.1
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چکیده
منابع مشابه
New Type-I and Type-II Clathrates in the Systems Cs–Na–Ga–Si, Rb–Na–Ga–Si, and Rb–Na–Zn–Si
Systematic studies in the systems Cs–Na–Ga–Si, Rb–Na–Ga–Si, and Rb–Na–Zn–Si yielded the novel type-I clathrates with refined compositions Cs6Na2Ga8.25Si37.75(3), Rb6.34Na1.66(2)Ga8.02Si37.98(3), and Rb5.20Na2.80(4)Zn3.85Si42.15(2) (cubic, Pm3 n ), as well as the type-II clathrates with formulae Cs8Na16Ga22.7Si113.3(1), Rb8.4Na15.6(1)Ga19.6Si116.4(1), and Rb8Na16Zn8.4Si127.6(1) (cubic, Fd3...
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We have studied the electronic and vibrational properties of the filled Ge-based clathrates, Na16Rb8Ge136 and Na16Cs8Ge136. We have performed calculations using the generalized gradient approximation (GGA) to density-functional theory. Both materials are found to have metallic character, in agreement with experimental data. The predicted phonon dispersion curves show the low frequency, localize...
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Two new heterometallic complexes [Cu2Zn2(H4L)2(CH3COO)2Cl2]·2.5CH3OH·0.5H2O (1) and [Cu8Zn8(OH)8(H4L)8](Cl)2(ClO4)6·16H2O (2) have been synthesised following two different preparative routes, by using the polydentate ligand Bis–tris propane (H6L = 2,2’-(propane-1,3-diyldiimino)bis[2-(hydroxymethyl)-propane-1,3-diol]). Herein, we describe the synthesis, structure, and magnetic properties of 1, a...
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چکیده ندارد.
15 صفحه اولCharacterization of calf liver Cu,Zn-metallothionein: naturally variable Cu and Zn stoichiometries.
Cu,Zn-metallothioneins were purified from bovine calf liver in order to examine the stoichiometry of metal binding to the protein. Copper and zinc analyses were carried out by atomic absorption spectrophotometry. Consistent quantitative thiolate analyses were obtained spectrophotometrically with Ellman's reagent and amperometrically with phenylmercuric acetate. These were used to define protein...
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ژورنال
عنوان ژورنال: Zeitschrift für anorganische und allgemeine Chemie
سال: 2017
ISSN: 0044-2313,1521-3749
DOI: 10.1002/zaac.201700236