This invention relates to {TAIL ~ a Group 8 metal containing catalyst compound} for the metathesis of {HEAD ~ olefins} 
This invention relates to { TAIL ~ a Group 8 metal containing catalyst compound } for the metathesis of { HEAD ~ olefins }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD