Struture and surface reactivity of transition-metal-oxo-organo clusters:contribution of liquid- and solid-state NMR to the characterization of the cluster Ti_(16)O_(16)(OEt)_(32)

摘要

Nano-building blocks,as metal-oxo-alkoxo clusters,defined as perfectly calibrated nanometric species,are good models for spectroscopic studies and good candidates for elaboration,by soft chemistry processes,of hybrid organic-inorganic materials.We focus our work on the cluster Ti_(16)O_(16)(OEt)_(32)and its reactivity against propyl alcohol.A better understanding of the surface reactivity allows the elaboration optimisation of hybrid materials by a better control of the hybrid interface.The use of high-resolution liquid(COSY,HMQC)and solid-state(Cross Polarization,MAS)NMR spectroscopies will be described,in order to characterize properly the surface organic groups.To cite this article:S.Le Calve et al,C.R.Chimie 7(2004).