CHEMICAL-REDUCTION OF VIOLOGEN BISPHOSPHONATE DIBROMIDE BY ALUMINUM FOIL, MAGNESIUM TURNINGS, AND MOSSY ZINC IN DILUTE AQUEOUS HYDROFLUORIC-ACID SOLUTION
Pa. Iyere, CHEMICAL-REDUCTION OF VIOLOGEN BISPHOSPHONATE DIBROMIDE BY ALUMINUM FOIL, MAGNESIUM TURNINGS, AND MOSSY ZINC IN DILUTE AQUEOUS HYDROFLUORIC-ACID SOLUTION, Chemistry of materials, 7(12), 1995, pp. 2224
Viologen bisphosphonate dibromide was reduced in dilute aqueous hydrof
luoric acid solution utilizing aluminum foil, magnesium turnings, or m
essy zinc to produce purple aggregates on the surface of the metals an
d blue solutions in the case of aluminum and magnesium. UV-visible spe
ctra indicate that the blue soltuion exhibits bands at 398 and 599 nm
which are characteristic of reduced monomeric dialkylviologen radical
cations. Aqueous solutions of other acids did not display analogous re
sults.