Coordination polymers with the chiral ligand N-p-tolylsulfonyl-l-glutamic acid: Influence of metal ions and different bipyridine ligands on structural chirality

✍ Scribed by Rong He; Hui-Hua Song; Zhen Wei; Jian-Jun Zhang; Yuan-Zhe Gao

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 618 KB
• Volume: 183
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1016/j.jssc.2010.07.005

✦ Synopsis

Four new polymers, namely [Ni(-tsgluO) 3), and [Co(-tsgluO)(4,4 0 -bipy)] n Á 0.5nH 2 O (4), where tsgluO 2 À ¼ (+)-N-p-tolylsulfonyl-L-glutamate dianion, 2,4 0 -bipy ¼ 2,4 0 -bipyridine, and 4,4 0bipy ¼4,4'-bipyridine, have been prepared and structurally characterized. Compounds 1 and 2 are isostructural and mononuclear, and crystallize in the acentric monoclinic space group Cc, forming 1D chain structures. Compound 3 is also mononuclear, but crystallizes in the chiral space group P2 1 , forming a homochiral 2D architecture. In contrast to the other complexes, compound 4 crystallizes in the space group P À 1 and is composed of binuclear [Co 2 O 6 N 2 ] n 4 À units, which give rise to a 2D bilayer framework. Moreover, compounds 1, 2, and 4 self-assemble to form 3D supramolecular structures through p-p stacking and hydrogen-bonding interactions, while compound 3 is further hydrogenbonded to form 3D frameworks. We have demonstrated the influence of the central metal and bipyridine ligands on the framework chirality of the coordination complexes.