In this communication we present the synthesis of the inverse crown ether complex [Li(2)O(2)·Li(4){CH(2)(N(Me)CH(2)S(NtBu)(2))(2)}(2)] (1) which is able to accommodate peroxide in a torus of lithium ions.

Download full-text PDF

Source
http://dx.doi.org/10.1039/c1cc14466aDOI Listing

Publication Analysis

Top Keywords

inverse crown
8
crown ether
8
ether complex
8
peroxide solvation
4
solvation toroidal
4
toroidal lithium
4
lithium inverse
4
complex assembled
4
assembled multidentate
4
multidentate polyimido
4

Similar Publications

Neighborhood environment and cognitive functioning in middle-aged and older population: A mediating role of physical activity.

Int J Hyg Environ Health

January 2025

RECETOX, Faculty of Science, Masaryk University, Brno, Czech Republic; Institute of Epidemiology & Health Care, University College London, London, United Kingdom. Electronic address:

Background: Evidence on the impact of complex neighborhood environment, including air pollution, greenness, and neighborhood socioeconomic deprivation (nSED) on cognitive health in older adults remains scarce. Both cognition and neighborhood environment are associated with physical activity, but little is known about the potential mediating role of physical activity in this association.

Methods: Cross-sectional data of the Czech arm of the HAPIEE cohort study examined 4,178 participants (55.

View Article and Find Full Text PDF

Effect of geometry on clasp retention force: a finite element analysis study.

BMC Oral Health

December 2024

Fujian Key Laboratory of Oral Diseases, School and Hospital of Stomatology, Fujian Medical University, 246 Yangqiao Zhong Road, Fuzhou, Fujian, 350002, PR China.

Purpose: The retention force of a realistic clasp is influenced by multiple, interrelated factors, which complicates the identification of the fundamental relationship between clasp geometry and retention force. While realistic clasps exhibit various shapes, they share basic geometric elements such as length, diameter, and curvature. Simpler geometries are often more conducive to identifying the underlying issues.

View Article and Find Full Text PDF

It is crucial to assess the impact of climate change on crop productivity and sustainability for the development of effective adaptation measures. Crop models are essential for quantifying this impact on crop yields. To better express crops' intrinsic growth and development patterns and their plasticity under different environmental conditions, the functional-structural plant model (FSPM) "GreenLab" has been developed.

View Article and Find Full Text PDF

Objectives: Facial width-to-height ratio (fWHR) has been widely investigated in the context of its role in visual communication, though there is a lack of consensus about how fWHR serves as a social signal. To better understand fWHR variation in a comparative context, we investigate the associations between fWHR and canine crown height (CCH) and body mass, respectively, among two chimpanzee subspecies (Pan troglodytes schweinfurthii, Pan troglodytes troglodytes) and bonobos (Pan paniscus).

Materials And Methods: We collected landmark data from 3D surface models of 86 Pan cranial specimens to quantify fWHR and upper CCH, and to estimate body mass.

View Article and Find Full Text PDF

Orthodontic management of severe inversely impacted maxillary central incisors: a case series.

Front Oral Health

October 2024

Division of Pediatric Dentistry, Department of Oral Health and Development Sciences, Tohoku University Graduate School of Dentistry, Sendai, Japan.

Background: Abnormal positioning and dislocation of the central incisor can disturb tooth eruption. Generally, inversely impacted maxillary central incisors do not erupt naturally. Performing traction and applied extrusion of an inversely impacted maxillary central incisor with a high inclination angle of the crown is challenging.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!