Cover Feature: Crucible-Free Preparation of Transition-Metal Borides: HfB2 (Chem. Eur. J. 63/2017)
نویسندگان
چکیده
منابع مشابه
Theoretical study of metal borides stability
We have recently identified metal-sandwich MS crystal structures and shown with ab initio calculations that the MS lithium monoboride phases are favored over the known stoichiometric ones under hydrostatic pressure Phys. Rev. B 73, 180501 R 2006 . According to previous studies synthesized lithium monoboride LiBy tends to be boron deficient y=0.8–1.0 , however, the mechanism leading to this phen...
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Tertiary silane 1H , 2-[(diphenylsilyl)methyl]-6-methylpyridine, reacts with tris(pentafluorophenyl)borane (BCF) to form the intramolecular pyridine-stabilized silylium 1+ -HBCF. The corresponding 2-[(diphenylsilyl)methyl]pyridine, lacking the methyl-group on the pyridine ring, forms classic N(py)→B adduct 2H -BCF featuring an intact silane Si-H fragment. Complex 1+ -HBCF promotes cleavage of t...
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Powder samples and single crystals of the boride phases MxRh7−xB3 (M = Cr, Mn, Ni; x≤ 1) have been synthesized from the elements using an arc-melting furnace under purified argon atmosphere in a water-cooled copper crucible. The new phases were characterized from single-crystal and powder X-ray diffraction, as well as semi-quantitative EDX measurements. The obtained phases crystallize in the he...
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In current paper we demonstrate the applicability of high viscous oligomeric alkoxide concentrates in fabrication of technologically interesting structures like nanometer diameter fibers (down to 200 nm), nanoneedles (tip radii 15-25 nm) and some micrometers wide linear surface structures. The approach is cost-effective and simple as it utilizes low-cost precursor materials (metal alkoxides) co...
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ژورنال
عنوان ژورنال: Chemistry - A European Journal
سال: 2017
ISSN: 0947-6539
DOI: 10.1002/chem.201704107