27Al and 31P NMR Study on the Formation of Al-NTA-(Phosphate)n (n=1 or 2) Complexes in Aqueous Solution

NMR Spectra and Potentiometry Studies of Aluminum(III) Binding with Coenzyme NAD+ in Acidic Aqueous Solutions

“…Most chemicals were of analytical reagent grade. Multinuclear ( 1 H, 13 C, 27 Al, 31 P) and two-dimensional ( 1 H, 1 H-NOESY) NMR measurements were prepared by dissolving appropriate amounts of NAD + and AlCl36H2O in D2O and DMSO. The necessary polyethylene vessels were used.…”

“…The 31 P and 27 Al NMR spectra were operated at 201.5 MHz and 130.3 MHz on a Bruker DRX500 spectrometer (Swiss), respectively. Chemical shifts were referenced to an external coaxial insert containing 0.1 M H3PO4 (0 ppm) and 0.1 M Al(H2O)6 3+ (0 ppm) included with every sample for 31 P, 27 Al NMR experiments.…”

“…Chemical shifts were referenced to an external coaxial insert containing 0.1 M H3PO4 (0 ppm) and 0.1 M Al(H2O)6 3+ (0 ppm) included with every sample for 31 P, 27 Al NMR experiments. 1 H and 13 C NMR measurements were performed on a Bruker AVANCE300 spectrometer at 300.1 MHz, 75.5 MHz, respectively, and 10000 scans were accumulated per 13 C-NMR spectrum.…”

“…6,[12][13][14]20 However, no study concerning the interaction between Al 3+ and NAD + has been found in the available literature. In the present work, we utilized potentiometry, multinuclear ( 1 H, 13 C, 27 Al, 31 P) and two-dimensional ( ) and 2:1 (AlL2 -) species, and dinuclear 2:2 (Al2L2 2+ ) species. (2) The conformations of NAD + and Al-NAD + depended on the solvents and different species in the complexes.…”

Multimethod Characterization of the Interaction of Aluminum Ion with α-Ketoglutaric Acid in Acidic Aqueous Solutions

“…[1][2][3][4][5][6] It has been documented that Al causes an inhibition of root formation in plants, 1,2,8 abnormal development in fish, neurological and bone tissue and hematological disorders in human. 9,11 Due to the increased bioavailability of Al and its effects on life systems, research on determining how Al enters different cells and affects cell chemistry and morphology, as well as the mechanism of its action and the fate of the Al species are essential areas of Al chemistry for the future.…”