1311375-16-2Relevant academic research and scientific papers
The first P-stereogenic 1D coordination polymers with the metal centers in the backbone
Salomon, Christine,Fortin, Daniel,Khiri, Naama,Juge, Sylvain,Harvey, Pierre D.
, p. 2597 - 2609 (2011)
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](BF4) and AgBF4 to produce the binuclear complexes [Cu2(dppm*)2(NCCH 3)4](BF4)2 or [Ag 2(dppm*)2](BF4)2, respectively. Then, these complexes were used as building blocks to prepare the first P-chirogenic 1D coordination polymers {[M2(dppm*) 2(dmb)2](BF4)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, {[M2(dppm)2(dmb)2](BF 4)2}n (M = Cu, Ag), was unambiguously demonstrated with a combination of methods including 1H NMR, chemical analysis, UV/Vis spectrometry, emission spectroscopy and emission lifetime measurements. The structure of the bimetallic complex [Ag2(R,R-23) 2](BF4)2 was solved by X-ray crystallography, and all enantiomeric complexes and polymers were characterized by circular dichroism spectroscopy. The (R,R)- and (S,S)-bis(o-anisylphenylphosphanyl) methane and bis(m-xylylphosphanyl)methane ligands (dppm*) react with Cu(BF4)2/Cu and Ag(BF4) to form the chiral binuclear complexes, which in turn react with 1,8-diisocyano-p-menthane (dmb) to give the first P-stereogenic 1D coordination polymers {[M2(dppm *)2(dmb)2](BF4)2} n. The isostrutural nature of these new polymers with the parent symmetric dppm-containing polymers was unambiguously demonstrated by using a combination of several structure elucidation methods. All compounds and polymers were also characterized by circular dichroism spectroscopy.
