“…The structural parameters of the inorganic ring skeleton can be compared with those found in related structures (NSOPh)2NPXY (van Bolhuis, Cnossen-Voswijk & van de Grampel, 1981;van Bolhuis, van den Berg & van de Grampel, 1981;Meetsma, Spek, Olthof-Hazekamp, Winter, van de Grampel & de Boer, 1985;Meetsma, Spek, Winter, Cnossen-Voswijk, van de Grampel & de Boer, 1986;Winter, van de Grampel, de Boer, Meetsma & Spek, 1987 Research Laboratories, Chugai Pharmaceutical Co. Ltd, Takada, Toshima, Tokyo 171, Japan (Received 26 June 1987;accepted 11 August 1987) Abstract. (Main, Fiske, Hull, Lessinger, Germain, Declercq & Woolfson, 1982).…”