gTshinevroelvfeodrwe,itthhHeBisnintcerrenasaelalimpsoost-rtwinicge, iwsitohfatesingnnifiacamnted an "empty" ring having sixinπcr-eeasleecoftrthoenHsB['6s 6st,r6e7ng]tah.nTdhetshe eenoolbicssetrruvcetudrecshreasenmgbelessathreetnripahmeneydlenaes, itnrCalnars'sfearroomfataicromaticity. ...