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An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
This paper is based on the ethnographic description of a devastated corridor of Chicago’s collapsing black ghetto at the end of the century and examines the links between the urban environment, the social structure, and collective psychology. It stresses the need for a theoretical and empirical foundation for studying the connections between urban desolation and symbolic denigration of poor neighborhoods in the polarized metropolises of advanced societies. It also discusses how the everyday experience of material shortages, ethnoracial seclusion, and socioeconomic marginality corrodes the self, stresses interpersonal ties, and skews public policy driven by the negative perceptions of these infamous places.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhoto-crosslinking of a polyurethane with pendant methacryloyl-Terminated 4-Alkoxy-4'-sulfamoylstilbene NLO ChromophoresJody E Beecher, Tony Durst, Jean M. J. Frechet, Adelheid Godt, and Craig S. WillandCite this: Macromolecules 1994, 27, 13, 3472–3477Publication Date (Print):June 1, 1994Publication History Published online1 May 2002Published inissue 1 June 1994https://pubs.acs.org/doi/10.1021/ma00091a005https://doi.org/10.1021/ma00091a005research-articleACS PublicationsRequest reuse permissionsArticle Views243Altmetric-Citations16LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
The disclosure provides for metal organic frameworks (MOFs) which comprise a plurality of SBUs comprising different metals or metal ions and/or a plurality of organic linking moieties comprising different functional groups.
Abstract not Available.
OBJECTIVES. Associations between sleep and internalizing problems are complex and poorly understood. To better understand these covarying difficulties, genetic and environmental influences were estimated by using a twin design. METHODS. Three hundred 8-year-old twin pairs reported on their anxiety and depression by completing the Screen for Childhood Anxiety Related Emotional Disorders and the Children's Depression Inventory. Parents reported on their children's sleep problems by completing the Child Sleep Habits Questionnaire. RESULTS. Children reported by their parents to have different types of sleep problems self-reported more depression symptoms than those without. The correlation between total sleep-problem score and depression was moderate. That between sleep problems and anxiety was smaller and was not examined further. The association between sleep problems and depression was mainly explained by genes, and there was substantial overlap between the genes influencing sleep problems and those influencing depression. There was smaller influence from environmental factors making family members alike, and environmental factors making family members different decreased the association between sleep problems and depression. CONCLUSIONS. A range of sleep difficulties are associated with depression in school-aged children, and the overall association between the 2 difficulties may be largely influenced by genes.
The regioselectivity of the borylation of arenes catalyzed by the combination of 4,4'-di-tert-butylbipyridine (dtbpy) and [Ir(cod)Cl]2 has typically been governed by steric effects. We describe a strategy that makes use of a new substituent for ortho-functionalization to overcome this bias. We show that arenes containing hydrosilyl substituents on an atom attached to the arene ring undergo borylation at the position ortho to the hydrosilyl group. Using iridium-catalyzed formation of silyl ethers and silylamines from silanes and either phenols or arylamines, we have developed the ortho-borylation into a one-pot conversion of free phenols and monoprotected anilines into hydroxy- and amino-substituted organoboron derivatives.
We present a physical implementation of the twist-and-flip circuit containing a nonlinear gyrator. Many phase portraits and their associated Poincare maps are observed experimentally from this circuit and presented in this paper.
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Aryl tosylates are attractive substrates for Pd-catalyzed cross-coupling reactions, but they are much less reactive than the more commonly used aryl triflates. We report the oxidative addition of aryl tosylates to Pd(PPF-t-Bu)[P(o-tolyl)3] and to Pd(CyPF-t-Bu)[P(o-tolyl)3] at room temperature to produce the corresponding palladium(II) aryl tosylate complexes. In the presence of added bromide ions, arylpalladium(II) bromide complexes were formed. The rate of oxidative addition was accelerated by addition of either coordinating or weakly coordinating anions, and the reactions were faster in more polar solvents. The mild conditions for oxidative addition allowed for the development of Pd-catalyzed Kumada couplings and amination reactions of unactivated aryl tosylates at room temperature. The catalysts for these mild couplings of aryl tosylates were generated from palladium precursors and the sterically hindered Josiphos-type ligands that induced oxidative addition of aryl tosylates to Pd(0) at room temperature.
