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Metal Complexes of New Mixed Oxaaza‐Macrocyclic Ligands. X‐Ray Crystal Structure of L 1 , L 2 , [SrL 2 (H 2 O) 2 ](ClO 4 ) 2 and [BaL 2 (NCS) 2 (CH 3 CN)]·CH 3 CN
Author(s) -
LópezDeber Montserrat,
Bastida Rufina,
FernándezFernández Maria del Carmen,
Macías Alejandro,
Rodríguez Adolfo,
Valencia Laura
Publication year - 2005
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.200570011
Subject(s) - ligand (biochemistry) , crystal structure , chemistry , crystallography , metal , stereochemistry , x ray crystallography , diamine , single crystal , crystal (programming language) , diffraction , polymer chemistry , physics , organic chemistry , biochemistry , receptor , programming language , computer science , optics
A new mixed oxaaza‐macrocyclic ligand, L 1 , has been obtained by direct synthesis between 1,4‐bis‐(2′‐formylphenyl)‐1,4‐dioxabutane and the diamine 2,2′‐ethylenedioxydiethylamine. The dialkylated ligand L 2 , bearing two nitrobenzyl pendant groups, has been prepared and transitional, post‐transitional and Ca 2+ , Sr 2+ , and Ba 2+ metal complexes have been synthesized in order to elucidate the coordination preferences. The crystal structures of the ligands L 1 and L 2 and the complexes [SrL 2 (H 2 O) 2 ](ClO 4 ) 2 and [BaL 2 (NCS) 2 (CH 3 CN)]·CH 3 CN have been determined by single crystal X‐ray diffraction. The structures reveal the presence of mononuclear endomacrocyclic complexes where the pendant arms radiate away from the ligand.