نتایج جستجو برای: lanthanide

تعداد نتایج: 4165  

Journal: :CrystEngComm 2021

Reactions in water between lanthanide chlorides and the di-sodium salt of 2-hydroxyterephthalic acid (H2hbdc) lead to six families lanthanide-based coordination polymers depending on ion crystal growth method.

Journal: :Inorganica Chimica Acta 2021

Crystal growths in gel medium of lanthanide-based coordination polymers with 2,5-dihydroxyterephthalate (dhbdc2−) as ligand lead to two different crystal structures depending on the lanthanide ion. Lanthanide-based that crystallize these structural type have respective chemical formulas [Ln2(dhbdc)3(H2O)12·6H2O]∞ Ln = La-Nd, and [Ln2(dhbdc)3(H2O)8·6H2O]∞ Sm-Yb plus Y. Only Nd-based Yb-based exh...

Journal: :Nature Chemical Biology 2018

Journal: :The Journal of organic chemistry 2012
Yujiang Mei Derek J Averill Matthew J Allen

The development of efficient methods for the asymmetric Mukaiyama aldol reaction in aqueous solution has received great attention. We have developed a new series of chiral lanthanide-containing complexes that produce Mukaiyama aldol products with outstanding enantioselectivities. In this paper, we describe an optimized ligand synthesis, trends in stereoselectivity that result from changing lant...

Journal: :Fine Chemical Technologies 2016

Journal: :Chemical communications 2016
Mukesh Kumar Singh Gopalan Rajaraman

Ab initio calculations performed on a series of lanthanide encapsulated fullerenes reveal {DyOSc}@C82 to be one of the best host-guest pairs to offer a barrier height exceeding 1400 cm-1. The high-symmetry environment preserved inside the cage quenches the QTM effects up to third-excited states leading to very larger barrier heights and this opens up a new possibility of obtaining attractive SM...

Journal: :Interface focus 2013
Jean-Claude G Bünzli

Lanthanide bioprobes and bioconjugates are ideal luminescent stains in view of their low propensity to photobleaching, sharp emission lines and long excited state lifetimes permitting time-resolved detection for enhanced sensitivity. We show here how the interplay between physical, chemical and biochemical properties allied to microfluidics engineering leads to self-assembled dinuclear lanthani...

Journal: :Dalton transactions 2015
Lidia Rosado Piquer E Carolina Sañudo

The promising potential applications, such as information processing and storage or molecular spintronics, of single-molecule magnets (SMMs) have spurred on the research of new, better SMMs. In this context, lanthanide ions have been seen as ideal candidates for new heterometallic transition metal-lanthanide SMMs. This perspective reviews 3d-4f SMMs up to 2014 and highlights the most significan...

Journal: :Dalton transactions 2012
Melina Nematirad William J Gee Stuart K Langley Nicholas F Chilton Boujemaa Moubaraki Keith S Murray Stuart R Batten

The heptadentate Schiff base ligand, 2-(2-hydroxyphenyl)-1,3-bis[4-(2-hydroxyphenyl)-3-azabut-3-enyl]-1,3-imidazoline (H(3)api), yields [Ln(2)api(2)] species when combined with lanthanide salts under basic conditions. A survey of the magnetic properties of this dinuclear lanthanide motif (Ln = Gd, Tb, Dy, Ho) has identified weak magnetic exchange, antiferromagnetic in nature for the isotropic g...

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