Ligand with carboxyl groups

Techniques for ligands with carboxylate groups Ethyidimethylaminopropyl carbodiimide (EDC) method... 

Carboxylates With the aim of developing highly luminescent Er111 complexes for advanced photonic applications, some of the research concentrates on the synthesis of new ligands, based on simple molecular frameworks such as alkyl chains or benzene rings fitted with carboxylate groups for coordination to the lanthanide ions. For instance, the photophys-... 

Metal oxide colloids have been effectively coupled with multifunctional ligands containing carboxyl groups that bind to the surface of nanoparticles [46]. One can rationally design optimal photocatalysts by tailoring functional groups for selective adsorption of specific... 

Some recent patents by Konishiroku refer to metallizable dyes of the dianionic type, with carboxyl groups as one of the ligands. A yellow pyridone (56) and a magenta naphthol dye (57) 22 are two examples. Patents assigned to Agfa-Gevaert describe cyan metallizable dyes from imidazo[l,5-a]pyridine such as (58) and yellow dyes from ethyl acetoacetate such as (59). A Fuji patent discloses a dye-releasing compound in which the dye is initially complexed with a metal... 

Polydentate ligands containing carboxylate groups form complexes with Ga and In " which exhibit both thermodynamic and kinetic stability. Some equilibrium constants for the formation of such complexes are given in Table 18 and show an increase in thermodynamic stability with increasing numbers of carboxylate groups in the polyfunctional amine acetate series. Among... 

Nitrogen-based radicals like nitroxides and verdazyl derivatives fulfill the basic requirements, since they share high stability and persistency and can be functionalized to coordinate metal ions. Charged radicals such as tetracyanoeth-ylene [68, 69] and tetracyanoquinone radical anions have also been reported [70], and a special case is represented by the o-quinone ligands that can be found in different oxidation states in valence tautomeric compounds [71]. Recently, PTM radicals substituted with carboxylate groups have been used to obtain metal-radical coordination polymers, which, in some cases, exhibit porous structures and relevant magnetic properties. Example of such porous magnets will be reported in detail in Section 4.3.3 [72]. 

---