Search results for "imine"

Bridging human and machine learning for the needs of collective intelligence development

2020

There are no doubts that artificial and human intelligence enhance and complement each other. They are stronger together as a team of Collective (Collaborative) Intelligence. Both require training for personal development and high performance. However, the approaches to training (human vs. machine learning) are traditionally very different. If one needs efficient hybrid collective intelligence team, e.g. for managing processes within the Industry 4.0, then all the team members have to learn together. In this paper we point out the need for bridging the gap between the human and machine learning, so that some approaches used in machine learning will be useful for humans and vice-versa, some …

Assembly and encapsulation of coordination tectons driven by hydrogen-bondingand space-filling

2001

[FR] Le composé ¿Fe(LI)3¿2¿Fe(H2O)6¿(ClO4)6 (2), LI = 1,10-phénanthroline-5,6-dione, a été synthétisé et caractérisé. La structure cristalline 2 est définie par un assemblage bidimensionnel non covalent, peu commun, constitué par des tectons chiraux ¿Fe(LI)3¿2+, assemblés par des cations ¿Fe(H2O)6¿2+ encapsulés dans des cages. Ces cages sont formées par 12 liaisons hydrogène établies entre les molécules d¿eau coordinées et les groupes dione appartenant à six molecules chirales ¿Fe(LI)3¿2+ ¿, ¿ alternées.

Stabilized Ru[(H2O)(6)](3+) in Confined Spaces (MOFs and Zeolites) Catalyzes the lmination of Primary Alcohols under Atmospheric Conditions with Wide…

2018

[EN] Imines are ubiquitous intermediates in organic synthesis, and the metal-mediated imination of alcohols is one of the most direct and simple methods for their synthesis. However, reported protocols lack compatibility with many other functional groups since basic supports/media, pure oxygen atmospheres, and/or released hydrogen gas are required during reaction. Here we show that, in contrast to previous metal-catalyzed methods, hexa-aqueous Ru(III) catalyzes the imination of primary alcohols with very wide functional group tolerance, at slightly acid pH and under low oxygen atmospheres. The inorganic metal complex can be supported and stabilized, integrally, within either faujasite-type …

No one ever steps in the same discussion twice: The relationship between identities and meaning

2016

The concept of identification is a relational construct; that is, identities are not static but rather negotiated based on available material and symbolic resources. However, we know relatively little about how identities play a dual role when students collaborate. The aim of this paper is to explore this process through multiple case studies: we aim to explore how identities are enacted and used in making personal sense and understand the content knowledge, while at the same time we are interested in how this process can take a form of renewing process in the sense that the identities enacted are themselves changed, transformed or re-negotiated. Our results show that due to its dual role, …

SYNTHESYS AND ANTITUMOR ACTIVITY OF ISOINDOLO [2,1-A]QUINOXALIN-6-IMINES AND THEIR AZA-ANALOGUES

2014

Learning in sport : from life skills to existential learning

2020

Youth sport is habitually promoted as an important context for learning that contributes to a person’s broader development beyond sport-specific skills. A growing body of research in this area has operated within a life skills discourse that focuses on useful, positive and decontextualised skills in the production of successful and adaptive citizens. In this paper, we argue that the ideological discourse of life skills, underpinned by ideas about sport-based positive youth development, has unduly narrowed the research on learning in sport to only what is deemed functional, teachable, and economically productive. After considering the problems associated with the currently dominant life skil…

Metal complexes of anxiolitic drugs. X-Ray crystal structure and electronic properties of aquobromazepam(oxalato O1 O2) copper(II)

1987

The crystal structure of the title compound has been determined from single-crystal x-ray diffraction data. The copper(II) ion is surrounded by two nitrogen atoms of the bromazepam** molecule [N(imine) and N(pyridine)], and two oxygen atoms of the oxalate ion in a square planar arrangement. One molecule of water is linked to the copper(II) ion in the axial position. The complex has been also characterized by electronic, e.s.r. and i.r. spectra.

Nickel precursors based on diamagnetic and paramagnetic di(imine)pyridine ligands for magnetic materials: Synthesis, X-ray structures and magnetic st…

2018

International audience; Structural characterization and spectroscopic studies of the (2-acetyl-6-(1-TEMPO-imino)ethyl)pyridine (pat) and the 2,6-bis(1-TEMPO-imino)ethyl)pyridine (pbtMe) ligands are presented. Their electrochemical properties are also discussed. Two new nickel complexes, [NiII(dip)(CH3CN)(H2O)2](BF4)2 (1) (dip = 2,6-(di-iminepyridine)) and [NiII(pbtMe)(CH3CN)3](BF4)2 (2) have been characterized by X-ray diffraction. The reaction of 1 with the tetraethyl ammonium pentacyanopropenide salt (Et4N)(pcp) affords the new compound [NiII(pcp)(dip)(CH3CN)](pcp) (3) for which X-ray diffraction studies evidence an usual bridging μ2 coordination mode for the pentacyanopropenide anion, le…

Chemoselective heterogeneous iridium catalyzed hydrogenation of cinnamalaniline

2020

International audience; Selective hydrogenation of unsaturated imines over heterogeneous catalysts is an ecologically feasible and effective way to produce commercially valuable saturated imines and unsaturated amines under mild conditions, avoiding the utilization of toxic halides. The liquid-phase hydrogenation of a model imine, cinnamalaniline, over Ir, Ru, Pd and Au catalysts was studied in polar protic (methanol, 2-propanol), polar aprotic (methyl tert-butyl ether) and non-polar aprotic (toluene) solvents at 40-80°C under atmospheric hydrogen pressure. Different metal oxides (Al 2 O 3 , ZrO 2 , SiO 2) and carbon composites based on carbon nitrides synthesized by pyrolysis of ethylenedi…

Creative Improvisations with Information and Communication Technology to Support Learning : A Conceptual and Developmental Framework

2017

This article is about facilitating collaborative, creative improvisations in learning with Information and Communication Technologies (ICT) and in so doing enhancing under-utilised creative possibilities in education and development in schools, universities, workplaces and in every-day life. Improvisation is defined and earlier research on supporting creative improvisations with ICT is outlined. There follows a conceptual framing where improvisation is seen as a creative outcome of certain cultural ecological interactions in learning environments. It is proposed that these creative improvisational interactions can be facilitated by ICT, and developmental ideas are presented. The purpose of …