Transition metal oxie / phenylphosphonate hybrids with M/P ratios ranging from 1 to 5, (M=Ti, Zr) and metal phosphonates (M/P = 0.5) have been prepared by a sol-gel process involving in a first step the non-hydrolytic condensation between metal alkoxide and phosphonic acid leading to M-O-P bonds, followed by the hydrolysis-condensation of hte remaining M-OR grooups. The composition, texture and structure of the materials were investigated using EDX, TGA, XRD, IR and ~31P NMR.
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