Phosphonic ligands

Phosphate and other Oxyanion Ligands 6.8.6.5.1 Phosphates and phosphonate ligands... 

Assignment of the signals has been made for lanthanide complexes of nonadendate imino-phosphonate ligands [48].114... 

Sm complexes with phosphonate ligands were found to target actively growing bone (i.e., tumors fractures).152 Several 153Sm phosphonate complexes were synthesized and evaluated in... 

Complexes of beryllium with phosphonate ligands have been extensively researched, mainly by potentiometry. The ligands investigated are as follows methylphosphonate (259, 260) chloromethyl-phosphonate (259) 2-aminopropane-l-phosphonate (259) methylene-diphosphonate (130, 260, 261) hexamethylenediphosphonate (259) l-hydroxyethane-l,l-diphosphonate (261) 1,1-dimethyl-1-amino-... 

The superior coordinating capacity of phosphonate over carboxylate is illustrated in the 9Be NMR spectra in Fig. 25 (260). The similarity of the spectra obtained by reaction of BeS04 and methylphosphonic acid or phosphonacetic acid indicates that the carboxylate group is not bound to the beryllium under these experimental conditions. It should be noted that substitution of a water molecule by a phosphonate ligand causes the 9Be resonance to move upfield when it co-ordinates, as does the fluoride ion (271), the only other monodenate ligand... 

Tei, L., Blake, A.J., Wilson, C., and Schroder, M. Lanthanide complexes of new nonadentate imino-phosphonate ligands from 1,4,7-triazacyclononane synthesis, structural characterisation and NMR studies, Dalton Trans. (2004), 1945-1952. 

Four water-soluble dendritic phosphonated ligands were first synthesized based on poly(amidoamine) (PAMAM) (generation 3 with 32 cascade end groups), with the hydrophilic amine or sulfonic acid groups on the surface of the dendrimer. Their Rh(I) complexes were used as the catalysts in the two-phase hydroformylation of styrene and 1-octene. The results showed that these new water-soluble dendritic catalysts exhibited high catalytic activity [64]. 

Figure 14.3 Representation of Candida antarctica B complexed with a covalently bound phosphonate ligand, (a) Ribbon rendering of the protein with the putative lid (red) in the open configuration and the ligand binding site (blue mesh). The mobile regions are shown in red (a5-helix) and yellow (alO-helix). (b) dose up view of the...

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