{HEAD ~ The catalyst} 1, wherein {TAIL ~ the alkali metal atoms} are a mixture of atoms of lithium and at least one atom selected from the group consisting of sodium, potassium, rubidium, cesium and francium 
wherein
{ HEAD ~ The catalyst } 1 , wherein { TAIL ~ the alkali metal atoms } are a mixture of atoms of lithium and at least one atom selected from the group consisting of sodium , potassium , rubidium , cesium and francium
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH