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Expanding the Size of Catecholesters – Modified Ligands for the Hierarchical Assembly of Dinuclear Titanium(IV) Helicates
Author(s) -
Van Craen David,
de Groot Marita,
Albrecht Markus,
Pan Fanfang,
Rissanen Kari
Publication year - 2015
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.201500543
Subject(s) - dimer , titanium , monomer , chemistry , lithium (medication) , nuclear magnetic resonance spectroscopy , stereochemistry , polymer chemistry , organic chemistry , polymer , medicine , endocrinology
Five 2,3‐dihydroxybenzoic acid derivatives 1 – 5 were used as starting materials to obtain the corresponding methyl and ethyl esters. Those were applied as ligands in the hierarchical self‐assembly of lithium‐bridged dinuclear titanium(IV) complexes 1a – 4a , 1b – 3b , and 5b . The equilibria between the mononuclear triscatecholate complexes (monomer) and the dinuclear helicates (dimer) were observed by 1 H NMR spectroscopy in [D 6 ]DMSO and [D 4 ]MeOH at room temperature.