نتایج جستجو برای: 6 blocks

تعداد نتایج: 1025839  

Journal: :Angewandte Chemie 2013
Hong-Ying Zang Haralampos N Miras De-Liang Long Benjamin Rausch Leroy Cronin

Polyoxometalate clusters (POMs) represent some of the largest non-biologically derived molecules so far synthesized as they occupy the 1–6 nm size range and exhibit a diverse variety of structures, assembled from a large “virtual combinatorial library” of building blocks. Whilst many tungsten POM clusters can be built in a controlled way, the designed assembly of giant molybdates is more diffic...

Journal: :J. Comb. Theory, Ser. A 1987
Rolf S. Rees

A uniformly resolvable pairwise balanced design is a pairwise balanced design whose blocks can be resolved into parallel classes in such a way that all blocks in a given parallel class have the same size. We are concerned here with designs in which each block has size two or three, and we prove that the obvious necessary conditions on the existence of such designs are also sufficient, with two ...

Journal: :Journal of the American Chemical Society 2002
K C Nicolaou J Jung W H Yoon K C Fong H-S Choi Y He Y-L Zhong P S Baran

A brief introduction into the chemistry of the CP-molecules is followed by first-generation synthetic sequences toward key building blocks for their total synthesis. Processes for both racemic and enantiomerically enriched bicyclo[4.3.1] ketone 6 or its equivalent are described, and the absolute stereochemistries of the optically enriched intermediates are determined. The efficient route develo...

Journal: :Organic & biomolecular chemistry 2015
Lorenzo Guazzelli Rebecca Ulc Lina Rydner Stefan Oscarson

As part of an ongoing project aimed at developing vaccine candidates against Cryptococcus neoformans the preparation of tri- and tetrasaccharide thioglycoside building blocks, to be used in construction of structurally defined part structures of C. neoformans GXM capsular polysaccharide, was investigated. Using a naphthalenylmethyl (NAP) ether as a temporary protecting group and trichloroacetim...

2013
Jenn-Yeu Chen Rong-Ju Cherng

In spoken word production, a proximate unit is the first phonological unit at the sublexical level that is selectable for production (O'Seaghdha et al., 2010). The present study investigated whether the proximate unit in Chinese handwritten character production is the stroke, the radical, or something in between. A written version of the form preparation task was adopted. Chinese participants l...

Journal: :Chemical communications 2011
Xiaobing Wang Jing Huang Shenglin Xiang Yu Liu Jianyong Zhang Andreas Eichhöfer Dieter Fenske Shi Bai Cheng-Yong Su

Ag(6)L(6)-type coordination nanotubular structures have been assembled from 6 Ag(I) ions and 6 T-shaped ligands, 4-(3,5-bis(diphenylphosphino)phenyl)pyridine; the nanotubes represent a discrete molecular architecture of a number of polymeric structures assembled from dimeric building blocks.

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