( ( ( The mechanism ) ( of ( said reaction ) ) ) ( ( ( ( was studied ) and ) ( theorized ( to ( be ( isolobal ( to ( ( the disproportionation ) ( of ( ( metal-metal ( bonded dimers ) ) ( involving ( 19-valence ( electron intermediates ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN mechanism)) (PP (IN of) (NP (VBN said) (NN reaction)))) (VP (VP (VBD was) (VP (VBN studied))) (CC and) (VP (VBD theorized) (S (VP (TO to) (VP (VB be) (ADJP (JJ isolobal) (PP (TO to) (NP (NP (DT the) (NN disproportionation)) (PP (IN of) (NP (NP (JJ metal-metal) (VBN bonded) (NNS dimers)) (VP (VBG involving) (NP (JJ 19-valence) (NN electron) (NNS intermediates))))))))))))) (. .)))
The mechanism of said reaction was studied and theorized to be isolobal to the disproportionation of metal-metal bonded dimers involving 19-valence electron intermediates.
(ROOT (S (NP (JJ Metallic) (NNS bonds)) (VP (VBP hold) (PRT (RP together)) (NP (NP (JJ positive) (NN metal) (NNS ions)) (CC and) (NP (PRP$ their) (JJ valence) (NNS electrons)))) (. .)))