conformer


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conformer

[kən′fȯr·mər]
(organic chemistry)
References in periodicals archive ?
L'optimisme affiche par le patron de la DGI porte a croire que le rapport d'Oxfam n'aura pas d'influence sur la liste de l'OCDE avec laquelle plusieurs reunions ont ete tenues pour se conformer aux normes en matiere de fiscale.
where the # index relates to the activated state, the primed [epsilon]'s are the purely elastic (Hookean) local backbone strains, U0 is the total (free and occupied) volume of each conformer, and v# is an activation volume, assumed of the order of [v.sub.0] ([[epsilon].sub.0] - [[epsilon]'.sub.#]); this should also be of the order of [v.sub.0] ([[epsilon].sub.#] - [[epsilon]'.sub.[infinity]]), if one additionally assumes that "gauche" and "trans" conformers are approximately symmetrical relative to the activated state from the standpoint of the local backbone strain, therefore also making v# = [v.sub.0] ([[epsilon].sub.0] - [[epsilon]'.sub.[infinity]])/2 or ([[epsilon].sub.0] - [[epsilon]'.sub.[infinity]]) = 2 v#/[v.sub.0].
Therefore, a low NOE ([zeta] = 8%) is observed at [H.sub.58] ([delta] = 3.16 ppm) when [H.sub.43] ([delta] = 4.35 ppm) is irradiated in the major conformer. Accordingly, a stronger NOE ([zeta] = 21%) is noted at [H.sub.58] ([delta] = 3.7 ppm) when [H.sub.43] ([delta] = 3.31 ppm) is irradiated in the minor conformer.
Facebook a revele avant-hier vendredi qu'il avait recu au second semestre 2012 entre 9.000 et 10.000 demandes d'information des autorites americaines sur des utilisateurs, assurant ne pas systematiquement s'y conformer, en plein scandale ne des revelations sur l'espionnage electronique de masse d'internet par les Etats-Unis.
[[alpha]].sub.D.sup.23] = +33.2 (c = 1.5,CH[Cl.sub.3]); [1.sup]H NMR (500 MHz, CD[Cl.sub.3], conformer mixture): [delta] = 7.49-7.29 (m, 10H, Ar-H), 6.94/6.82 (s, 1H, CH), 5.57/5.54 (s, 1H, CH), 5.30-5.11 (m, 4H, Bn-[CH.sub.2]), 4.89 (m, 1H, CH), 2.45 (m, 1H, [CH.sub.2]), 2.12 (m, 1H, [CH.sub.2]), 2.03 (m, 1H, [CH.sub.2]), 1.95 (m, 1H, [CH.sub.2]), 1.80 (s, 3H, [CH.sub.3]), 1.77/1.88 (d, J = 5 Hz, 3H, [CH.sub.3]).
We have previously reported that the molecular characteristics, electrophoretic mobility, and glycoform ratio of the [PrP.sup.res] associated with the vCJD [PrP.sup.d] conformer were faithfully reproduced by PMCA (10).
Although ethanol, the "key," is achiral, it has two chiral conformers (gauche) corresponding to the orientation of the methyl group with respect to the O-H bond, and one achiral (trans) conformer (see Figure 2).
Transforming learners used the Internet while conformers did not and yet conformer learners performed the most self-care practices.
All the data collected indicates there are two conformers; the anti conformer is the more stable rotamer and the gauche conformer in the fluid states but only the gauche conformer in the poly-crystalline solid.
GO of the approximate structure of ketophenol results in the conformer (1) (item 1 in Table 1).
Ltd., qui vise a se conformer aux nouvelles regles avec ses produits pauvres en glucides recemment introduits, meme si ces mesures ne prendront pas effet avant decembre.