250 research outputs found
O-H...O, C-H...O and C-H...[pi]arene intermolecular interactions in (2S)-2-(1-oxo-1H-2,3-dihydroisoindol-2-yl)pentanoic acid and (2S)-3-methyl-2-(1-oxo-1H-2,3-dihydroisoindol-2-yl)butanoic acid
In the first of the title compounds, (2S)-2-(1-oxo-1H-2,3-dihydroisoindol-2-yl)pentanoic acid, CââHââ
NOâ, prepared from L-norvaline, a hydrogen-bonded network is formed in the solid state through O-H...O=C, C-H...O=C and C-H...Ïarene intermolecular interactions, with shortest O...O, C...O and C...centroid distances of 2.582 (13), 3.231 (11) and 3.466 (3) Ă
, respectively. In the L-valine derivative, (2S)-3-methyl-2-(1-oxo-1H-2,3-dihydroisoindol-2-yl)butanoic acid, CââHââ
NOâ, O-H...O=C and Carene-H...O=C intermolecular interactions generate a cyclic RÂČâ(9) motif through cooperativity, with shortest O...O and C...O distances of 2.634 (3) and 3.529 (5) Ă
, respectively. Methylene C-H...O=Cindole interactions complete the hydrogen bonding, with C...O distances ranging from 3.283 (4) to 3.477 (4) Ă
(2RS)-3-(4-Hydroxyphenyl)-2-(1-oxo-1H-2,3-dihydroisoindol-2-yl)propanoic acid monohydrate
The title compound, CââHââ
NOâ·HâO, derived from DL-tyrosine crystallizes as an unusual hydrogen-bonded acid-monohydrate dimer. The asymmetric unit contains two organic molecules and two water molecules. Dimers link through (aryl)O-H...O=C hydrogen bonds along the [101] direction, forming a one-dimensional chain of rings, and further associated via inversion centres (forming a chain of rings aligned in the opposite direction) generating columns. Ruffled sheets arise from interlocking of isoindole rings via Ï-Ï(arene) stacking and C-H...Ï(arene) interactions; C-H...O interactions generate a three-dimensional network
(2S)-4-Methyl-2-(1-oxo-1H-2,3-dihydroisoindol- 2-yl)pentanoic acid.
The title compound, C14H17NO3, exhibits carboxylic acid
group disorder about the CâCO2 axis, with site occupancies
of 0.79 (5):0.21 (5). Molecules are linked by intermolecular
OâH O Ciso, CâH O Ciso and CâH (arene)
interactions (iso = isoindolinone)
A comparative study of mobile technology adoption in remote Australia
The paper presents a comparative study of mobile technology adoption\ud
and use by two communities â one Aboriginal and the other non-Aboriginal â\ud
both located in a remote region of Australia, the Bloomfield River Valley of Cape\ud
York. Both communities have high levels of ownership of mobile phones relative\ud
to, on the one hand, the low uptake of other ICT such as fixed-line phones by the\ud
Aboriginal community at Wujal Wujal and, on the other hand, the poor mobile\ud
coverage in the non-Aboriginal community at Bloomfield. For both groups\ud
communication is of paramount importance, followed by listening to music. In\ud
addition, the Aboriginal community make extensive use of other multimedia and\ud
Internet features of their devices. Key factors in the motivation to acquire mobile\ud
phones, in comparison to other ICT, are the superior cost management that\ud
mobiles offer for Aboriginal people and the convenience of being able to\ud
communicate while away from home for Bloomfield residents. The authors\ud
conclude that mobile technology needs to be taken seriously, even in areas of\ud
limited coverage such as the Bloomfield River Valley
Intermolecular interactions in the chiral and racemic forms of 3-hydroxy-2-(1-oxoisoindolin-2-yl)butanoic acid derived from threonine
The title compounds, CââHââNOâ, are derived from L-threonine and DL-threonine, respectively. Hydrogen bonding in the chiral derivative, (2S/3R)-3-hydroxy-2-(1-oxoisoindolin-2-yl)butanoic acid, consists of O-Hacid...Oalkyl-H...O=Cindole chains [O...O 2.659 (3) and 2.718 (3) Ă
], CspÂł-H...O and three C-H...Ïarene interactions. In the (2R,3S/2S,3R) racemate, conventional carboxylic acid hydrogen bonding as cyclical (O-H...O=C)â [graph set RâÂČ(8)] is present, with Oalkyl-H...O=Cindole, CspÂł-H...O and C-H...Ïarene interactions. The COOH group geometry differs between the two forms, with C-O, C=O, C-C-O and C-C=O bond lengths and angles of 1.322 (3) and 1.193 (3) Ă
, and 109.7 (2) and 125.4 (3)°, respectively, in the chiral structure, and 1.2961 (17) and 1.2210 (18) Ă
, and 113.29 (12) and 122.63 (13)°, respectively, in the racemate structure. The O-C=O angles of 124.9 (3) and 124.05 (14)° are similar. The differences arise from the contrasting COOH hydrogen-bonding environments in the two structures
Technology Skill Sharing in Torres Strait
The increasing deployment of technology is changing the way services are delivered. New technologies require people to learn new procedures to do the same things they were doing previously as well as to learn to use entirely new services. Business has made little accommodation for the diversity of users and their situations as the use of technology increases and the human interface with its clientsâ decreases. This study looks at how Indigenous people in a remote area access Internet banking services. Internet banking is a discrete technological skill that has been effectively acquired without outside assistance or direction: this makes it a useful lens to view the process of technology skill acquisition
Intermolecular OâH O hydrogen bonding in the three independent molecules of (2S)-3-(4-hydroxyphenyl)-2-(1-oxoisoindolin-2-yl)propanoic acid.
The title compound, C17H15NO4, derived from l-tyrosine, crystallizes with three independent molÂecules which differ in the conformation of the asymmetric unit: the NâCâCâCipso torsion angles are â71.7 (5), â63.6 (6) and â52.5 (5)°, respectively. Deformations in the phenol ring hydroxy OâCâC angles of 116.5 (4)/123.9 (4), 121.7 (5)/118.1 (4) and 122.4 (5)/118.6 (5)°, respectively, result from their respective intermolecular hydrogen-bonding environments. Intermolecular OacidâHtO=Cindole, OphenolâHtOâHphenol and OphenolâHtO=Cindole hydrogen bonds, with OtO distances in the range 2.607 (4)â2.809 (4) Ă
, are present in combination with CâHtO and CâHtÏarene interactions. The primary hydrogen-bonding systems assemble with graph sets R33(8) and R32(22)
O-H...O, C-H...O and C-H...Ïarene Intermolecular Interactions in (2R/2S)-2-(1-oxo-1,3-dihydroisoindol-2-yl)-3-phenylpropanoic Acid
The title compound, CââHââ
NOâ, forms a hydrogenbonded
network in the solid state consisting of O-H...O=C, Carene--H...and 0=C and Carene--H...Ïarene
intermolecular interactions, with shortest O...O, C...O
and C...C distances of 2.625(2), 3.281(3) and
3.652 (3)Ă
, respectively. The interplanar angle between
the five- and six-membered rings of the isoindole system
is 1.07 (14) °, with the carbonyl O atom 0.I10 (3)Ă
from the CâN ring plane
Editorial: Special Issue âInternational Conference of Spirituality in Healthcare. Sowing the SeedsââTrinity College Dublin 2015
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