id	sid	tid	token	lemma	pos
hx11xd10d3r	1	1	the	the	DET
hx11xd10d3r	1	2	development	development	NOUN
hx11xd10d3r	1	3	of	of	ADP
hx11xd10d3r	1	4	homogeneous	homogeneous	ADJ
hx11xd10d3r	1	5	transition	transition	NOUN
hx11xd10d3r	1	6	metal	metal	NOUN
hx11xd10d3r	1	7	catalysts	catalyst	NOUN
hx11xd10d3r	1	8	containing	contain	VERB
hx11xd10d3r	1	9	iron	iron	NOUN
hx11xd10d3r	1	10	is	be	AUX
hx11xd10d3r	1	11	desired	desire	VERB
hx11xd10d3r	1	12	due	due	ADP
hx11xd10d3r	1	13	to	to	ADP
hx11xd10d3r	1	14	iron	iron	NOUN
hx11xd10d3r	1	15	's	's	PART
hx11xd10d3r	1	16	relatively	relatively	ADV
hx11xd10d3r	1	17	high	high	ADJ
hx11xd10d3r	1	18	natural	natural	ADJ
hx11xd10d3r	1	19	abundance	abundance	NOUN
hx11xd10d3r	1	20	and	and	CCONJ
hx11xd10d3r	1	21	low	low	ADJ
hx11xd10d3r	1	22	toxicity	toxicity	NOUN
hx11xd10d3r	1	23	compared	compare	VERB
hx11xd10d3r	1	24	to	to	ADP
hx11xd10d3r	1	25	noble	noble	ADJ
hx11xd10d3r	1	26	metals	metal	NOUN
hx11xd10d3r	1	27	,	,	PUNCT
hx11xd10d3r	1	28	such	such	ADJ
hx11xd10d3r	1	29	as	as	ADP
hx11xd10d3r	1	30	platinum	platinum	NOUN
hx11xd10d3r	1	31	,	,	PUNCT
hx11xd10d3r	1	32	ruthenium	ruthenium	NOUN
hx11xd10d3r	1	33	,	,	PUNCT
hx11xd10d3r	1	34	and	and	CCONJ
hx11xd10d3r	1	35	iridium	iridium	NOUN
hx11xd10d3r	1	36	.	.	PUNCT
hx11xd10d3r	2	1	many	many	ADJ
hx11xd10d3r	2	2	iron	iron	NOUN
hx11xd10d3r	2	3	catalysts	catalyst	NOUN
hx11xd10d3r	2	4	contain	contain	VERB
hx11xd10d3r	2	5	pincer	pincer	NOUN
hx11xd10d3r	2	6	ligands	ligand	NOUN
hx11xd10d3r	2	7	which	which	PRON
hx11xd10d3r	2	8	help	help	VERB
hx11xd10d3r	2	9	to	to	PART
hx11xd10d3r	2	10	stabilize	stabilize	VERB
hx11xd10d3r	2	11	the	the	DET
hx11xd10d3r	2	12	metal	metal	NOUN
hx11xd10d3r	2	13	center	center	NOUN
hx11xd10d3r	2	14	and	and	CCONJ
hx11xd10d3r	2	15	tune	tune	VERB
hx11xd10d3r	2	16	its	its	PRON
hx11xd10d3r	2	17	reactivity	reactivity	NOUN
hx11xd10d3r	2	18	.	.	PUNCT
hx11xd10d3r	3	1	to	to	PART
hx11xd10d3r	3	2	further	far	ADV
hx11xd10d3r	3	3	explore	explore	VERB
hx11xd10d3r	3	4	this	this	DET
hx11xd10d3r	3	5	area	area	NOUN
hx11xd10d3r	3	6	,	,	PUNCT
hx11xd10d3r	3	7	iron	iron	NOUN
hx11xd10d3r	3	8	complexes	complex	NOUN
hx11xd10d3r	3	9	containing	contain	VERB
hx11xd10d3r	3	10	a	a	DET
hx11xd10d3r	3	11	pyrrole	pyrrole	NOUN
hx11xd10d3r	3	12	-	-	PUNCT
hx11xd10d3r	3	13	based	base	VERB
hx11xd10d3r	3	14	pnp	pnp	NOUN
hx11xd10d3r	3	15	ligand	ligand	NOUN
hx11xd10d3r	3	16	,	,	PUNCT
hx11xd10d3r	3	17	pnpyrp	pnpyrp	PROPN
hx11xd10d3r	3	18	(	(	PUNCT
hx11xd10d3r	3	19	pnpyrp	pnpyrp	NOUN
hx11xd10d3r	3	20	=	=	PRON
hx11xd10d3r	3	21	2,5	2,5	NUM
hx11xd10d3r	3	22	-	-	PUNCT
hx11xd10d3r	3	23	bis((di	bis((di	NUM
hx11xd10d3r	3	24	-	-	PUNCT
hx11xd10d3r	3	25	iso	iso	NOUN
hx11xd10d3r	3	26	-	-	PUNCT
hx11xd10d3r	3	27	propylphosphino)methyl)pyrrolide	propylphosphino)methyl)pyrrolide	NOUN
hx11xd10d3r	3	28	)	)	PUNCT
hx11xd10d3r	3	29	,	,	PUNCT
hx11xd10d3r	3	30	were	be	AUX
hx11xd10d3r	3	31	synthesized	synthesize	VERB
hx11xd10d3r	3	32	.	.	PUNCT
hx11xd10d3r	4	1	deprotonation	deprotonation	NOUN
hx11xd10d3r	4	2	of	of	ADP
hx11xd10d3r	4	3	the	the	DET
hx11xd10d3r	4	4	pro	pro	ADJ
hx11xd10d3r	4	5	-	-	ADJ
hx11xd10d3r	4	6	ligand	ligand	ADJ
hx11xd10d3r	4	7	,	,	PUNCT
hx11xd10d3r	4	8	(	(	PUNCT
hx11xd10d3r	4	9	pnpyrp)h	pnpyrp)h	SPACE
hx11xd10d3r	4	10	,	,	PUNCT
hx11xd10d3r	4	11	with	with	ADP
hx11xd10d3r	4	12	a	a	DET
hx11xd10d3r	4	13	base	base	NOUN
hx11xd10d3r	4	14	followed	follow	VERB
hx11xd10d3r	4	15	by	by	ADP
hx11xd10d3r	4	16	transmetallation	transmetallation	NOUN
hx11xd10d3r	4	17	with	with	ADP
hx11xd10d3r	4	18	an	an	DET
hx11xd10d3r	4	19	iron	iron	NOUN
hx11xd10d3r	4	20	(	(	PUNCT
hx11xd10d3r	4	21	ii	ii	PROPN
hx11xd10d3r	4	22	)	)	PUNCT
hx11xd10d3r	4	23	precursor	precursor	PROPN
hx11xd10d3r	4	24	gave	give	VERB
hx11xd10d3r	4	25	the	the	DET
hx11xd10d3r	4	26	desired	desire	VERB
hx11xd10d3r	4	27	pnpyrp	pnpyrp	NOUN
hx11xd10d3r	4	28	-	-	PUNCT
hx11xd10d3r	4	29	iron	iron	NOUN
hx11xd10d3r	4	30	complexes	complex	NOUN
hx11xd10d3r	4	31	.	.	PUNCT
hx11xd10d3r	5	1	both	both	DET
hx11xd10d3r	5	2	coordinatively	coordinatively	ADV
hx11xd10d3r	5	3	unsaturated	unsaturated	ADJ
hx11xd10d3r	5	4	,	,	PUNCT
hx11xd10d3r	5	5	paramagnetic	paramagnetic	ADJ
hx11xd10d3r	5	6	and	and	CCONJ
hx11xd10d3r	5	7	coordinatively	coordinatively	ADV
hx11xd10d3r	5	8	saturated	saturate	VERB
hx11xd10d3r	5	9	,	,	PUNCT
hx11xd10d3r	5	10	diamagnetic	diamagnetic	ADJ
hx11xd10d3r	5	11	complexes	complex	NOUN
hx11xd10d3r	5	12	were	be	AUX
hx11xd10d3r	5	13	isolated	isolate	VERB
hx11xd10d3r	5	14	.	.	PUNCT
hx11xd10d3r	6	1	these	these	DET
hx11xd10d3r	6	2	compounds	compound	NOUN
hx11xd10d3r	6	3	were	be	AUX
hx11xd10d3r	6	4	then	then	ADV
hx11xd10d3r	6	5	characterized	characterize	VERB
hx11xd10d3r	6	6	by	by	ADP
hx11xd10d3r	6	7	multinuclear	multinuclear	PROPN
hx11xd10d3r	6	8	nmr	nmr	PROPN
hx11xd10d3r	6	9	spectroscopy	spectroscopy	NOUN
hx11xd10d3r	6	10	and	and	CCONJ
hx11xd10d3r	6	11	x	x	NOUN
hx11xd10d3r	6	12	-	-	NOUN
hx11xd10d3r	6	13	ray	ray	NOUN
hx11xd10d3r	6	14	crystallography	crystallography	NOUN
hx11xd10d3r	6	15	.	.	PUNCT
hx11xd10d3r	7	1	finally	finally	ADV
hx11xd10d3r	7	2	,	,	PUNCT
hx11xd10d3r	7	3	the	the	DET
hx11xd10d3r	7	4	reactivity	reactivity	NOUN
hx11xd10d3r	7	5	of	of	ADP
hx11xd10d3r	7	6	the	the	DET
hx11xd10d3r	7	7	complexes	complex	NOUN
hx11xd10d3r	7	8	towards	towards	ADP
hx11xd10d3r	7	9	hydrogen	hydrogen	NOUN
hx11xd10d3r	7	10	gas	gas	NOUN
hx11xd10d3r	7	11	,	,	PUNCT
hx11xd10d3r	7	12	ligand	ligand	NOUN
hx11xd10d3r	7	13	substitution	substitution	NOUN
hx11xd10d3r	7	14	,	,	PUNCT
hx11xd10d3r	7	15	and	and	CCONJ
hx11xd10d3r	7	16	hydride	hydride	NOUN
hx11xd10d3r	7	17	reagents	reagent	NOUN
hx11xd10d3r	7	18	was	be	AUX
hx11xd10d3r	7	19	investigated	investigate	VERB
hx11xd10d3r	7	20	.	.	PUNCT