Jansen Martin, Schön J Christian, van Wüllen Leo
Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, 70569 Stuttgart, Germany.
Angew Chem Int Ed Engl. 2006 Jun 26;45(26):4244-63. doi: 10.1002/anie.200504193.
Si(3)B(3)N(7) is the parent compound of a new class of amorphous ceramics containing silicon, boron, nitrogen, and carbon that display a unique spectrum of properties. It consists of a random network in which the constituent elements are linked by predominantly covalent bonds. Similarly to quartz glass, the composition of amorphous Si(3)B(3)N(7) is virtually stoichiometric. As all three of its constituent elements can serve as the objects of various structural probes, Si(3)B(3)N(7) was selected as the basis of a systematic structural investigation, in which methods for the structure determination of solids without translational symmetry could be validated and improved. However, as the complete amorphous structure cannot be deduced from experimental data, these results must be complemented by computer simulations. Thus, five classes of structure models were generated and compared to experimental results. Only the models generated by following the actual synthesis route as closely as possible agreed well with the experimental data.
