Non-hydrolytic pathways to silica and analogues and molecular models of silica surfaces with oxygen defects and Si=O groups (D03)

• Subject Area: Solid State and Surface Chemistry, Material Synthesis
• Term: from 2014 to 2018
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 234149247

The project is devoted to the development of unprecedented non-hydrolytic synthetic methods for the generation of well-defined molecular models of silica and its heavy homologues. Building upon the successful (‘water-free’) synthesis and isolation of the first donor-stabilised monomeric SiX, SiX2 (X = O, S, Se, Te) and Si(CO3)2 complexes, their hydrolysis will be studied to generate Si(OH)4 and related compounds. The suitability of cyclo-Si6Cl12 and its siloxy- and alkoxy-substituted derivatives to serve as molecular models and precursors of oxygen-deficient silicas will further be investigated.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1109: Understanding of Oxide/Water Systems at the Molecular Scale: Structural Evolution, Interfaces and Dissolution
• Applicant Institution: Humboldt-Universität zu Berlin
• Co-Applicant Institution: Technische Universität Berlin
• Project Head: Professor Dr. Matthias Drieß