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On the role played by the chirality of ligands on the aggregation of heterometallic Cu II ‐Hg II complexes
Author(s) -
Maxim Catalin,
Muntean Dorian,
Andruh Marius
Publication year - 2019
Publication title -
chirality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.43
H-Index - 77
eISSN - 1520-636X
pISSN - 0899-0042
DOI - 10.1002/chir.23114
Subject(s) - chemistry , enantiopure drug , copper , chirality (physics) , medicinal chemistry , schiff base , stereochemistry , crystallography , enantioselective synthesis , catalysis , organic chemistry , chiral symmetry , physics , quantum mechanics , quark , nambu–jona lasinio model
Copper(II) complexes constructed from enantiopure Schiff‐base ligands derived from o ‐vanillin and methionine or from their racemic mixture have been employed as metalloligands towards mercury(II) ions. The nature of the heterometallic Cu II ‐Hg II complexes (coordination polymers or oligonucler species), resulted from the reactions of the copper(II) complexes with HgCl 2 or HgI 2 , is different. The enantiopure metalloligands lead to chiral coordination polymers, 1 ∞ [{Cu( R‐ / S ‐valmet)(H 2 O)} 2 HgCl 2 ]·5H 2 O·CH 3 OH and 2 ∞ [{Cu 2 ( R‐ / S ‐valmet) 2 (μ‐H 2 O)(H 2 O) 2 }HgI 2 ]·4H 2 O. The reaction of the racemic mixture of the metalloligands with HgX 2 affords discrete complexes: [{Cu( R , S ‐valmet)(H 2 O) 2 } 2 HgCl 2 ]·2H 2 O and [{Cu( R , S ‐valmet)(H 2 O)(CH 3 OH)} 2 Hg 2 I 4 ].