A Stable Calcium Alumanyl.

Angew Chem Int Ed Engl

Department of Chemistry, University of Bath, Bath, BA2 7AY, UK.

Published: March 2020

A seven-membered N,N'-heterocyclic potassium alumanyl nucleophile is introduced and utilised in the metathetical synthesis of Mg-Al and Ca-Al bonded derivatives. Both species have been characterised by experimental and theoretical means, allowing a rationalisation of the greater reactivity of the heavier group 2 species implied by an initial assay of their reactivity.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7159655PMC
http://dx.doi.org/10.1002/anie.201914986DOI Listing

Publication Analysis

Top Keywords

stable calcium
4
calcium alumanyl
4
alumanyl seven-membered
4
seven-membered nn'-heterocyclic
4
nn'-heterocyclic potassium
4
potassium alumanyl
4
alumanyl nucleophile
4
nucleophile introduced
4
introduced utilised
4
utilised metathetical
4

Similar Publications

Blood-contacting medical devices can easily trigger immune responses, leading to thrombosis and hyperblastosis. Constructing microtexture that provides efficient antithrombotic and rapid reendothelialization performance on complex curved surfaces remains a pressing challenge. In this work, we present a robust and regular micronano binary texture on the titanium surface, characterized by exceptional mechanical strength and precisely controlled wettability to achieve excellent hemocompatibility.

View Article and Find Full Text PDF

Aim: Calcium silicate-based cements have been widely used in dentistry mainly due to their physicochemical and biological properties. Commercially available materials use radiopacifiers containing metals (bismuth, tantalum, tungsten and/or zirconium). To investigate volumetric changes, in vivo biocompatibility and systemic migration from eight commercially available materials, including powder/liquid and 'ready-to-use' presentations.

View Article and Find Full Text PDF

Biphasic calcium phosphate (BCP) is a bioceramic widely used in hard tissue engineering for bone replacement. BCP consists of β-tricalcium phosphate (β-TCP) - a highly soluble and resorbable phase - and hydroxyapatite (HA) - a highly stable phase, creating a balance between solubility and resorption, optimally supporting cell interactions and tissue growth. The β-TCP/HA ratio significantly affects the resorption, solubility, and cellular response, with a higher β-TCP ratio increasing resorption due to its solubility.

View Article and Find Full Text PDF

Optimized detection of calcium ion in serum using constant potential coulometry with metastable liquid-liquid contact doping enhanced PEDOT: PSS ink.

Bioelectrochemistry

January 2025

School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China; Key Laboratory for Polymeric Composite & Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, People's Republic of China.

Highly stable calcium ion selective electrodes (Ca-ISEs) were developed by drop-casting a layer of poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT: PSS) as an ion-to-electron transfer layer onto Au electrode. The conductive PEDOT: PSS ink was prepared using a metastable liquid-liquid contact (MLLC) doping method, which induced phase separation, removed excess PSS, and significantly enhanced charge transfer kinetics and conductivity. The resulting Ca-ISEs exhibited excellent electrochemical performance.

View Article and Find Full Text PDF

Enhancing Ω Phase Thermal Stability in Al Alloys through Interstitial Ordering.

J Phys Condens Matter

January 2025

Department of Physics, Hunan Normal University, Building of quantum, Hunan normal university, Changsha, Hunan, 410081, CHINA.

Scandium (Sc) can orderly occupy interstitial sites within the Ω phase of aluminum alloys, forming a new phase that significantly enhances the thermal stability of the alloy. However, Sc is relatively expensive and rare. In this work, we employ first-principles calculations to delve into the physical essence interstitial ordering of Sc in enhancing thermal stability at the electronic level, thereby revealing the crucial factors responsible for this improvement.

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!