( ( in ( ( the ( three-component system ) ) ( consisting ( of ( ( ( ( phosphine , ) ( half ( sandwich ( iron halide ) ) ) ) and ) ( alkyl lithium ) ) ) ) ) ) ( , ( ( ( the alkylation ) ( of ( cyclopentadienyl ring ) ) ) ( ( was ( found ( to ( occur ( via ( an ( electron ( transfer process ) ) ) ) ) ) ) ) ; ) ) ) )
(ROOT (S (PP (IN in) (NP (NP (DT the) (JJ three-component) (NN system)) (VP (VBG consisting) (PP (IN of) (NP (NP (NN phosphine)) (, ,) (NP (DT half) (NN sandwich) (NN iron) (NN halide)) (CC and) (NP (JJ alkyl) (NN lithium))))))) (, ,) (NP (NP (DT the) (NN alkylation)) (PP (IN of) (NP (JJ cyclopentadienyl) (NN ring)))) (VP (VBD was) (VP (VBN found) (S (VP (TO to) (VP (VB occur) (PP (IN via) (NP (DT an) (NN electron) (NN transfer) (NN process)))))))) (: ;)))
in the three-component system consisting of phosphine, half sandwich iron halide and alkyl lithium, the alkylation of cyclopentadienyl ring was found to occur via an electron transfer process;
(ROOT (S (NP (NNP Lithium)) (VP (VBZ has) (NP (CD three) (NNS electrons))) (. .)))