Ligand with hydroxyl groups

Techniques for ligands with hydroxyl groups Cyanuric chloride method Divinylsulfone method Epoxy (bisoxirane) method... 

The formation of inclusion complexes is influenced mainly by steric parameters of ligands (geometry and size) and by the possibility of creating hydrophobic interactions and hydrogen bonds (physicochemical properties). Hydrophobic interactions predominate in the cavity, and they can act in concert with polar interactions that occur with hydroxyl groups located at the outer lip of the CDs. There are no covalent bonds (14). 

Anchoring of active catalysts to insoluble materials such as oxides, silicates, and zeolites often reduces the loss of catalyst during the catalytic process (66). The fixation of the active centers can be achieved either by means of their interaction with hydroxyl groups on a solid surface or, alternatively, by means of interactions between the CO ligands of the metal complex and a Lewis acidic center of the surface. Zeolite-supported cobalt catalysts have been reported for hydroformylation reactions (67). 

Rh6(CO)i6 impregnated on basic oxides such as MgO, ZnO, CaO, La203, Nd203, or Y2O3 (Table XII). In situ IR studies of oxide-bound cluster carbonyls indicate that the CO ligand reacts with hydroxyl groups at 200-260° to form the corresponding formates, which were characterized by IR bands at 1580, 1370, and 1440 cm (114) ... 

The Rh complex [Rh(cod)(diphosphine)], with diphosphine ligands functionalized with hydroxyls groups, was immobilized onto several ACs and carbon cloth with different textural chemistry previously modified with the spacer naph-toic acid the materials were characterized by gas adsorption, TPD, and TG-DSC... 

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