Paramagnetic 19F NMR and electrospray ionization mass spectrometric studies of substituted pyridine complexes of chromium(III): Models for potential use of 19F NMR to probe Cr(III)–nucleotide interaction-Science-Chemical Encyclopedia-lookchem

Paramagnetic 19F NMR and electrospray ionization mass spectrometric studies of substituted pyridine complexes of chromium(III): Models for potential use of 19F NMR to probe Cr(III)–nucleotide interaction
Add time:09/06/2019 Source:sciencedirect.com

The synthesis and characterization of chromium basic carboxylate complexes, [Cr3(O2CR)6L3]+, containing trifluoroacetate, 3-fluoropyridine, 3-trifluoromethylpyridine, and 4-trifluoromethylpyridine are described. The substituted pyridine ligands are used as models of DNA bases to determine whether 19F NMR would be a potentially useful probe of the binding of Cr3+ to DNA. The 19F NMR resonances of the coordinated ligands, while broadened by delocalization of unpaired electron density from the S = 3/2 chromic centers, are readily discernable, and the contact shifts are of sufficient magnitude that the signals from coordinated and free ligands can easily be differentiated. Thus, 19F NMR appears to be a potentially useful probe of the binding of Cr3+ to DNA containing F-labeled bases. Additionally, electrospray MS is shown to be a convenient method to establish the identity of chromium basic carboxylate assemblies.

We also recommend Trading Suppliers and Manufacturers of CHROMIUM(III) TRIFLUOROACETATE (cas 16712-29-1). Pls Click Website Link as below: cas 16712-29-1 suppliers

Prev:Synthesis, characterization and molecular structures of Cu(II) and Ba(II) fluorinated carboxylate complexes
Next: Ligand steric hindrance and electronic effects on β-enaminoketonato half-sandwich chromium(III) olefin polymerization catalysts)

Periodic Table

Click to view details

Encyclopedia

Health and Chemicalmore >

Related Products