Synthesis, crystal structure, DNA-binding and magnetism of copper 15-metallacrown-5 complexes based on glycinehydroxamic acid ligand

Abstract

Six lanthanide 15-MC-5 complexes based on glycinehydroxamic acid were synthesized. DNA-binding properties of the six complexes with calf thymus DNA were investigated using fluorescence spectroscopy and circular dichroism studies.

Magnetic Properties of LnIII–CuII 15‐Metallacrown‐5 Dimers with Terephthalate (LnIII = Pr, Nd, Sm, Eu)

“…Information About Composition: There are minor differences (in the solvent composition) in the composition of 1 – 4 obtained from the X‐ray structure determination for a single crystal taken out from a mother liquor and from elemental analysis performed for a bulk polycrystalline air‐dried sample. Such differences are quite typical for complexes possessing large voids in their lattices,, , or that suffer from substantial disorder of the solvating molecules. The composition obtained from X‐ray analysis was used for crystal structure description, while the compositions obtained from elemental analysis for the polycrystalline samples were used for the description of their magnetic properties.…”

“…Though 15‐metallacrown‐5 complexes have been known for about 20 years, the magnetic properties of these metallamacrocycles are still not completely understood when compared to other metallacrown structural types, and their investigation continues . Beyond several reports devoted to the qualitative magnetic properties of Ln III ‐containing 15‐metallacrowns‐5 published so far only two reports have demonstrated successful quantitative analysis of experimentally observed χ M T vs. T data , …”

pH‐Responsive Switching Properties of a Water‐Soluble Metallamacrocyclic Phenylalaninehydroximate La(III)–Cu(II) Complex: Insight into Tuning Protonation Ligand States

“…Nowadays, the popularity of water‐soluble polynuclear metallamacrocyclic Cu(II)‐Ln(III) complexes is largely due to their rich coordination chemistry, diverse properties and ease of synthesis . The remarkable feature of Cu(II)‐Ln(III) 15‐MC‐5 complexes is the deep color .…”

Copper(II) Complexes Based on Aminohydroxamic Acids: Synthesis, Structures, In Vitro Cytotoxicities and DNA/BSA Interactions

“…They also exhibited the most potent antitumor activities, and have more effective than cisplatin in vitro tests in some cases [8]. For example, some complexes involving aminohydroxamic acid ligands also show interesting bioactivity [10,11].…”