Results 201 to 210 of about 430,530 (226)

A tetraguanidinium macrocycle for the recognition and cavity expansion of calix[4]arene tetraoxoanions

Supramolecular Chemistry, 2013
Molecular containers have raised an increased interest over the last decade. These supramolecular architectures have found applications in catalysis, molecular sensing or as insulators for key intermediates, among others. In this study, we describe the synthesis and binding properties of a tetraguanidinium macrocycle which forms robust complexes with ...
Valero Moreno, Julian; id_orcid 0000-0002-5260-2770, de Mendoza, Javier   +1 more
openaire   +2 more sources

The mechanism of metal incorporation into the cavity of macrocyclic ligands: a molecular mechanical analysis

Journal of Molecular Structure, 1991
Abstract The subtle structural difference between meso -5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacy-clotetradecane (tet-a) (L 1 ) and c-rac -5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane (tet-b) (L 2 ) is responsible for different methods of metal binding. Conformational studies show that steric interactions limit the flexibility of
Carmen R. Canales, Marc Zimmer
openaire   +1 more source

Two Hg(II)-Based Macrocycles Offering Hydrogen Bonding Cavities: Influence of Cavity Structure on Heterogeneous Catalysis

Crystal Growth & Design, 2019
We present the synthesis and characterization of two Hg-macrocycles offering H-bonding based cavities of varying dimensions.
Sanya Pachisia, Rajeev Gupta
openaire   +1 more source

Shaping the Cavity of the Macrocyclic Ligand in Metallocalix[4]arenes:  The Role of the Ligand Sphere

Inorganic Chemistry, 2001
The coordination form of calix[4]arene ligands and therefore the cavity of the macrocyclic ligand can be controlled by other ligands in transition metal calix[4]arene complexes, if strong directing coligands such as oxo groups are used. This paper describes the synthesis and characterization of the d(0) transition metal complexes [Cax(OMe)(2)O(2)TiCl(2)
openaire   +2 more sources

ChemInform Abstract: The Specification of Bonding Cavities in Macrocyclic Ligands

Chemischer Informationsdienst, 1986
K. HENRICK, P. A. TASKER
openaire   +1 more source

Macrocyclic Architecture: Tuning Cavity Size and Shape through Maleimide Photochemistry

Chemistry – A European Journal, 2012
Cubbage, Kara L., Corrie, Tom, Evans, Nicola, Haddow, Mairi F., Booker-Milburn, Kevin I.   +4 more
openaire   +3 more sources

Solvent-Activated Thin-Film Nanocomposite Membranes Molecularly Tuned With Macrocyclic Cavities for Efficient Water Desalination and Boron Removal

Chemical Engineering Journal, 2023
Yingran He, Neal Tai-Shung Chung
exaly  

Synthesis and complexing properties of chiral macrocycles containing enforced cavities

Journal of the American Chemical Society, 1981
Roger C. Helgeson, Jean Paul Mazaleyrat, Donald J. Cram   +2 more
openaire   +1 more source

Naphthotubes: Macrocyclic Hosts With a Biomimetic Cavity Feature

Accounts of Chemical Research, 2020
Wei Jiang, Wei Jiang, Huan Yao
exaly  

Oral Cavity and Oropharyngeal Squamous Cell Carcinoma—An Update

Ca-A Cancer Journal for Clinicians, 2015
Angela C Chi, Terry A Day
exaly