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HKUST-1 (HKUST ⇒ Hong Kong University of Science and Technology), [1] which is also called MOF-199, [2] is a material in the class of metal-organic frameworks (MOFs). Metal-organic frameworks are crystalline materials, in which metals are linked by ligands (so-called linker molecules) to form repeating coordination motives extending in three ...
As one might expect, given the greater Lewis acidity of Cr(III) vs. Cu(II), MIL-101 is much more active than HKUST-1 as a catalyst for the cyanosilylation of aldehydes. Additionally, the Kaskel group observed that the catalytic sites of MIL-101, in contrast to those of HKUST-1, are immune to unwanted reduction by benzaldehyde.
The HKUST Learning Commons provides ~600 seats and has 5 zones: Group Study, Open Study, Refreshment, Teaching, and The Creative Media Zone. [9] The Library and its staff were very active in supporting the university in the University Grants Committee (Hong Kong)'s Hong Kong Research Assessment Exercise of 2014. [10]
In another example, the Nicolaou's total synthesis of Taxol uses this reaction, although coupling stops with the formation of a cis-diol, rather than an olefin. Optimized procedures employ the dimethoxyethane complex of TiCl 3 in combination with the Zn(Cu) .
The main example is provided by silver perchlorate (and related salts), which dissolve in liquid arenes and crystallize with arene ligands. The strength of the metal-arene interaction is weak as indicated by the long Ag-C bond lengths and the nearly unperturbed nature of the arene.
Graphane is a two-dimensional polymer of carbon and hydrogen with the formula unit (CH) n where n is large. [1] Partial hydrogenation results in hydrogenated graphene, which was reported by Elias et al. in 2009 by a TEM study to be "direct evidence for a new graphene-based derivative". The authors viewed the panorama as "a whole range of new ...
This reaction was the first example of a carbon-carbon bond-forming reaction that followed a Pd(0)/Pd(II) catalytic cycle, the same catalytic cycle that is seen in other Pd(0)-catalyzed cross-coupling reactions. The Heck reaction is a way to substitute alkenes.
The carboxylic acid Schmidt reaction starts with acylium ion 1 obtained from protonation and loss of water. Reaction with hydrazoic acid forms the protonated azido ketone 2 , which goes through a rearrangement reaction with the alkyl group R, migrating over the C-N bond with expulsion of nitrogen.