NEW [2.2]ORTHOCYCLOPHANES AND [2.2]METACYCLOPHANE HAVING SILICON- SILICON BONDS AS BRIDGING UNITS

Abstract
Four new [2.2]cyclophanes having two silicon-silicon bridges were prepared by the Diels-Alder reaction of 3,3,4,4,7,7,8,8-octamethyl-3,4,7,8-tetrasilacycloocta-1,5-diyne. These novel cyclophanes and two other related compounds are characterized by various spectra.