Synthesis of alkenylene-bridged macrocyclic silsesquioxanes by ruthenium or rhodium-catalyzed ring-closing reactions of bis(allyldimethylsilyl) groupsElectronic supplementary information (ESI) available: experimental details. See http://www.rsc.org/suppdata/cc/b1/b104086n/
Abstract
Novel alkenylene-bridged oligosilsesquioxanes composed of
half-caged structures with 16- or 17-membered rings as well as a
titanium-containing molecule with a twisted 21-membered