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The First P ‐Stereogenic 1D Coordination Polymers with the Metal Centers in the Backbone
Author(s) -
Salomon Christine,
Fortin Daniel,
Khiri Naïma,
Jugé Sylvain,
Harvey Pierre D.
Publication year - 2011
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201100154
Subject(s) - chemistry , isostructural , bimetallic strip , stereocenter , enantiomer , crystallography , polymer , metal , stereochemistry , circular dichroism , nuclear magnetic resonance spectroscopy , spectroscopy , crystal structure , organic chemistry , enantioselective synthesis , catalysis , physics , quantum mechanics
The enantiomeric ligands ( R , R )‐ and ( S , S )‐bis( o ‐anisylphenylphosphanyl)methane ( R , R ‐ 22 and S , S ‐ 22 ) and ( R , R )‐ and ( S , S )‐bis(phenyl‐ m ‐xylylphosphanyl)methane ( R , R ‐ 23 and S , S ‐ 23 ; dppm*), were treated with [Cu(NCCH 3 ) 4 ](BF 4 ) and AgBF 4 to produce the binuclear complexes [Cu 2 (dppm*) 2 (NCCH 3 ) 4 ](BF 4 ) 2 or [Ag 2 (dppm*) 2 ](BF 4 ) 2 , respectively. Then, these complexes were used as building blocks to prepare the first P ‐chirogenic 1D coordination polymers {[M 2 (dppm*) 2 (dmb) 2 ](BF 4 ) 2 } n [dppm* = ( R , R )‐ 22 , ( S , S )‐ 22 , ( R , R )‐ 23 , ( S , S )‐ 23 , M = Cu, Ag, dmb = 1,8‐diisocyano‐ p ‐menthane] where M is part of the backbone of the polymer chain. The isostructural nature of these new polymers with the achiral parent polymers, {[M 2 (dppm) 2 (dmb) 2 ](BF 4 ) 2 } n (M = Cu, Ag), was unambiguously demonstrated with a combination of methods including 1 H NMR, chemical analysis, UV/Vis spectrometry, emission spectroscopy and emission lifetime measurements. The structure of the bimetallic complex [Ag 2 ( R , R ‐ 23 ) 2 ](BF 4 ) 2 was solved by X‐ray crystallography, and all enantiomeric complexes and polymers were characterized by circular dichroism spectroscopy.