N,N-Dialkylcarbamato derivatives of niobium and tantalum as precursors to metal-functionalized silica surfaces

Chemical implantation of Group 5 cations occurs under mild conditions by the reaction of N,N-dialkylcarbamates M(O2CNR2)n, n = 3, 5, with the silanol groups of amorphous silica; the amount of supported cations depends on the metal and on the total number of N,N-dialkylcarbamato ligands.