نتایج جستجو برای: pendant

تعداد نتایج: 4277  

Journal: :Cahiers de recherches médiévales et humanistes 1996

Journal: :Discrete Applied Mathematics 2021

Independent set games are cooperative defined on graphs, where players edges and the value of a coalition is maximum cardinality independent sets in subgraph by coalition. In this paper, we investigate convexity games, as convex possess many nice properties both economically computationally. For introduced Deng et al. [5], provide necessary sufficient characterization for convexity, i.e., every...

Journal: :Organic letters 2002
David C Lankin Gary L Grunewald F Anthony Romero Ilkay Yildiz Oren James P Snyder

[structure: see text] DFT and MMFF force field calculations for 2 (R = H) predict that two conformers dominate in water (>/=95%) and both sustain a geometry in which the C-F and H-N dipoles align oppositely in a near-planar arrangement. The (1)H NMR spectra (D(2)O and DMSO-d(6)) and X-ray structure for 2 (R = SO(2)NHEt) confirm the predictions in all essentials. A novel single-conformer system ...

2008
Angannan Nallasivam Munirathinam Nethaji Nagarajan Vembu Venkatraman Ragunathan Nagarajan Sulochana

In the title compound, C(21)H(18)O(4), tthe dihedral angle between the chromene ring system and the pendant phenyl ring is 6.1 (1)°. The crystal structure is stabilized by an intermolecular C-H⋯O and C-H⋯π inter-actions.

2009
Ye-Chao Hang Jin-Xiu Ji Min-Dong Chen

In the title compound, C(24)H(21)NO(2), the pendant benzene ring is inclined at a dihedral angle of 86.66 (18)° with respect to the adjacent aromatic ring of the carbozole unit. In the crystal structure, symmetry-related mol-ecules are linked via C-H⋯O and C-H⋯π inter-actions.

Journal: :Chemical communications 2012
Katsuhiro Maeda Shiho Wakasone Kouhei Shimomura Tomoyuki Ikai Shigeyoshi Kanoh

Helical polymer brushes with a preferred-handed helix-sense composed of a poly(phenylacetylene) backbone and poly(phenyl isocyanate) pendants are synthesized. The helix-sense of the backbone is effectively controlled by the helical chirality of the pendants, which is triggered by an optically active group introduced at the pendant terminal.

2012
Rachael Wade Colleen Cartwright Kelly Shaw

AIM This paper investigates the acceptance of in-home telehealth by frail older adults and carers of the Transition Care Program (TCP), and evaluates telehealth acceptance as a predictor for usage compliance. METHOD A STRATIFIED RANDOM SAMPLE OF PARTICIPANTS WAS ALLOCATED TO ONE OF FIVE GROUPS: either a control group or to receive telehealth monitoring of their vital signs for a period of 12 ...

Journal: :Chemical communications 2002
Olga P Kryatova Sergey V Kryatov Richard J Staples Elena V Rybak-Akimova

The novel 4'-(ammoniummethylene)benzo-18-crown-6 cation was synthesized as a hexafluorophosphate salt and found to exist as a cyclophane-like dimer in the solid state, gas phase and in acetonitrile solution.

Journal: :Antimicrobial agents and chemotherapy 1986
T Ikeda H Hirayama H Yamaguchi S Tazuke M Watanabe

Two types of polycations with pendant active groups were synthesized: one is polymethacrylate containing pendant biguanide units, and the other is poly(vinylbenzyl ammonium chloride). The two polycations were found to exhibit higher bactericidal activity against Staphylococcus aureus than the corresponding monomers. Fractionation of the polycations was successfully performed on gel filtration c...

2017
Hamza Boufroura Benjamin Large Talia Bsaibess Serge Perato Vincent Terrasson Anne Gaucher

The synthesis of new vicinal diamines based on aziridine and azetidine cores as well as the comparison of their catalytic activities as ligand in the Suzuki-Miyaura coupling reaction are described in this communication. The synthesis of threeand four-membered ring heterocycles substituted by a methylamine pendant arm is detailed from the parent nitrile derivatives. Complexation to palladium und...

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