Norbornadiene121-46-0100 % similar Bis[chloro(norbornadiene)rhodium]12257-42-060 % similar Bis(norbornadiene)rhodium (I) tetrafluoroborate36620-11-850 % similar Bicyclo(2.1.0)pent-2-ene5164-35-238 % similar Norbornene498-66-833 % similar