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Metal Complexes of Indigo and of Some Related Ligands[1][F. Kühlwein, 1998]
Author(s) -
Beck Wolfgang,
Sünkel Karlheinz
Publication year - 2020
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201900363
Subject(s) - indigo , deprotonation , denticity , metal , chelation , chemistry , coordination complex , indigo carmine , polymer chemistry , inorganic chemistry , organic chemistry , art , ion , visual arts
While the first coordination compounds of indigo were reported over 100 years ago, a systematic study of the coordination chemistry of this important dye and also its structural “relatives” remained silent for over half a century. Only in the last two decades of the 20th century research on this topic started again keeps on growing ever since. It could be established, mainly by X‐ray crystallography, but also by many other modern spectroscopic techniques, that deprotonated indigo, and its deprotonated oxidized and reduced forms act as mono‐ and bidentate chelate ligands in metal complexes