the macrocyclic ligands 2,3,5,6-bis{3’-bromo-5’-tert-butyl benzo-5-phenyl benzo} 12c3 (l1), 2,3,5,6-bis{3’-bromo-5’-tert butyl-benzo-5’-phenyl-benzo}15c4 (l2), 2,3,5,6-bis{3’-bromo-5’-tert butyl-benzo-5’-phenyl-benzo}18c5 (l3) have been synthesized and their alkaline metal compounds with naclo4∙h2o and kclo4  have been prepared. chemical formulas of all compounds have been characterized by usin...

macrocyclic heterobinuclear zn(ii)–cu(ii) complexes with phenol based dicompartmental ligands possessing contiguous hexa- and penta-coordination sites were prepared by a stepwise procedure. the ligands include similar n4o2 and dissimilar n(imine)3o2 and n(amine)3o2 coordination sites sharing two phenolic oxygen atoms. the six-coordination site comprises two pyridyl pendant arms on the amine nit...

Macrocyclic heterobinuclear Zn(II)–Cu(II) complexes with phenol based dicompartmental ligands possessing contiguous hexa- and penta-coordination sites were prepared by a stepwise procedure. The ligands include similar N4O2 and dissimilar N(imine)3O2 and N(amine)3O2 coordination sites sharing two phenolic oxygen atoms. The six-coordination site comprises two pyridyl pendant arms on the amine nit...

In an effort to examine the interaction between dioxygen and iron-macrocyclic complexes, and to understand how this interaction was affected by those different macrocyclic ligands, dioxygen binding with iron-porphyrin, iron-phthalocyanine, iron-dibenzotetraaza[14]annulene, and iron-salen complexes is investigated by means of quantum chemical calculations utilizing Density Functional Theory (DFT...

Macrocyclic complexes and their chemistry is a growing area of research in inorganic and bioinorganic chemistry in point of its biological significance [1]. Macrocyclic complexes have also received special attention because of their mixed soft –hard donor acceptor character and versatile coordination behavior and their pharmacological properties [2]. Macrocyclic ligands and complexes have versa...

Macrocyclic complexes of Mn, Co, Ni and Cu using a macrocyclic ligand derived by the condensation of Trimethoprim and diethyl phthalate have been prepared and characterized by electronic, IR and NMR spectral studies as well as magnetic moment and conductivity. On the basis of spectral studies, an octahedral geometry has been proposed for all the complexes. INTRODUCTION: The chemistry of macrocy...

Macrocyclic compounds are an attractive class of therapeutic ligands against challenging targets, such as protein–protein interactions. However, the development macrocycles drugs is hindered by lack large combinatorial macrocyclic libraries, which cumbersome, expensive, and time consuming to make, screen, deconvolute. Here, we established a strategy for synthesizing screening libraries on picom...

introduction, topologically constrained azamacrocycles, defined as macrocycles having additional bridges besides the basic parent ring between nitrogen atoms donors, will be discussed. Special attention will be paid to a unique class of macrocycles consisting of cross-bridged macrocyclic ligands having added components of topological and rigidity constraints. These impart exceptional kinetic an...

A couple of enantiomers of novel chiral macrocyclic imines based on R/S-camphor were asymmetrically synthesized. Through the chiral macrocyclic ligands, enantiomers of nickel(II) coordination compounds were obtained. The chirality of the ligand was transferred to the nickel atom upon coordination, leading to predetermined configuration. The chiral ligands and corresponding nickel coordination c...