id sid tid token lemma pos 3b591833823 1 1 over over ADP 3b591833823 1 2 the the DET 3b591833823 1 3 past past ADJ 3b591833823 1 4 century century NOUN 3b591833823 1 5 , , PUNCT 3b591833823 1 6 zintl zintl PROPN 3b591833823 1 7 ions ion NOUN 3b591833823 1 8 have have AUX 3b591833823 1 9 been be AUX 3b591833823 1 10 studied study VERB 3b591833823 1 11 in in ADP 3b591833823 1 12 an an DET 3b591833823 1 13 effort effort NOUN 3b591833823 1 14 to to PART 3b591833823 1 15 improve improve VERB 3b591833823 1 16 their their PRON 3b591833823 1 17 synthesis synthesis NOUN 3b591833823 1 18 and and CCONJ 3b591833823 1 19 understand understand VERB 3b591833823 1 20 the the DET 3b591833823 1 21 differences difference NOUN 3b591833823 1 22 in in ADP 3b591833823 1 23 geometry geometry NOUN 3b591833823 1 24 and and CCONJ 3b591833823 1 25 electronic electronic ADJ 3b591833823 1 26 structure structure NOUN 3b591833823 1 27 . . PUNCT 3b591833823 2 1 in in ADP 3b591833823 2 2 the the DET 3b591833823 2 3 past past ADJ 3b591833823 2 4 ten ten NUM 3b591833823 2 5 years year NOUN 3b591833823 2 6 , , PUNCT 3b591833823 2 7 research research NOUN 3b591833823 2 8 has have AUX 3b591833823 2 9 begun begin VERB 3b591833823 2 10 to to PART 3b591833823 2 11 explore explore VERB 3b591833823 2 12 the the DET 3b591833823 2 13 functionalization functionalization NOUN 3b591833823 2 14 and and CCONJ 3b591833823 2 15 reactivity reactivity NOUN 3b591833823 2 16 of of ADP 3b591833823 2 17 the the DET 3b591833823 2 18 ge9 ge9 NOUN 3b591833823 2 19 cluster cluster NOUN 3b591833823 2 20 . . PUNCT 3b591833823 3 1 the the DET 3b591833823 3 2 work work NOUN 3b591833823 3 3 herein herein ADV 3b591833823 3 4 furthers further VERB 3b591833823 3 5 the the DET 3b591833823 3 6 understanding understanding NOUN 3b591833823 3 7 of of ADP 3b591833823 3 8 ge9 ge9 NOUN 3b591833823 3 9 clusters cluster NOUN 3b591833823 3 10 , , PUNCT 3b591833823 3 11 as as ADV 3b591833823 3 12 well well ADV 3b591833823 3 13 as as ADP 3b591833823 3 14 provides provide VERB 3b591833823 3 15 new new ADJ 3b591833823 3 16 insights insight NOUN 3b591833823 3 17 into into ADP 3b591833823 3 18 the the DET 3b591833823 3 19 functionalization functionalization NOUN 3b591833823 3 20 that that SCONJ 3b591833823 3 21 the the DET 3b591833823 3 22 cluster cluster NOUN 3b591833823 3 23 undergoes undergo VERB 3b591833823 3 24 . . PUNCT 3b591833823 4 1 this this DET 3b591833823 4 2 work work NOUN 3b591833823 4 3 contains contain VERB 3b591833823 4 4 three three NUM 3b591833823 4 5 sections section NOUN 3b591833823 4 6 : : PUNCT 3b591833823 4 7 ( ( PUNCT 3b591833823 4 8 i i NOUN 3b591833823 4 9 ) ) PUNCT 3b591833823 4 10 functionalization functionalization NOUN 3b591833823 4 11 of of ADP 3b591833823 4 12 the the DET 3b591833823 4 13 ge9 ge9 NOUN 3b591833823 4 14 monomer monomer NOUN 3b591833823 4 15 cluster cluster NOUN 3b591833823 4 16 by by ADP 3b591833823 4 17 various various ADJ 3b591833823 4 18 organic organic ADJ 3b591833823 4 19 functional functional ADJ 3b591833823 4 20 groups group NOUN 3b591833823 4 21 , , PUNCT 3b591833823 4 22 ( ( PUNCT 3b591833823 4 23 ii ii PROPN 3b591833823 4 24 ) ) PUNCT 3b591833823 4 25 potential potential ADJ 3b591833823 4 26 synthesis synthesis NOUN 3b591833823 4 27 of of ADP 3b591833823 4 28 a a DET 3b591833823 4 29 tri tri ADJ 3b591833823 4 30 - - ADJ 3b591833823 4 31 substituted substituted ADJ 3b591833823 4 32 cluster cluster NOUN 3b591833823 4 33 , , PUNCT 3b591833823 4 34 and and CCONJ 3b591833823 4 35 ( ( PUNCT 3b591833823 4 36 iii iii X 3b591833823 4 37 ) ) PUNCT 3b591833823 4 38 synthesis synthesis NOUN 3b591833823 4 39 of of ADP 3b591833823 4 40 cluster cluster NOUN 3b591833823 4 41 oligomers oligomer NOUN 3b591833823 4 42 and and CCONJ 3b591833823 4 43 studies study NOUN 3b591833823 4 44 of of ADP 3b591833823 4 45 their their PRON 3b591833823 4 46 functionalization functionalization NOUN 3b591833823 4 47 and and CCONJ 3b591833823 4 48 reactivity reactivity NOUN 3b591833823 4 49 by by ADP 3b591833823 4 50 mass mass ADJ 3b591833823 4 51 spectrometry spectrometry NOUN 3b591833823 4 52 . . PUNCT