Anion-Directed Assembly of Macrocycle and Helix
2006 (English)In: Crystal Growth & Design, ISSN 1528-7483, E-ISSN 1528-7505, Vol. 6, no 6, 1440-1444 p.Article in journal (Refereed) Published
Self-assembly of the flexible ligand N,N‘-bis(3-pyridylmethyl)thiourea (bpt) with ZnCl2 and CdCl2 in the absence and presence of KSCN yielded a short series of novel complexes (1−4) with macrocyclic, helical, double-helical, and 1D polymeric structures. Different metal ions, hydrogen bonds, and counteranions play significant roles in the final crystal structures. The NCS- anion was found to favor the formation of helical structures, whereas the Cl- anion favored macrocycle formation in the present system. Photoluminescence (PL) measurement results revealed that complex 2 (Zn(bpt)(SCN)2) with a helical structure exhibits enhanced emissions compared to those of the ligand and other complexes. The anion-directed assembly as well as the interesting emissions may provide useful information for further design of metal−organic compounds with novel structures and properties.
Place, publisher, year, edition, pages
American Chemical Society (ACS), 2006. Vol. 6, no 6, 1440-1444 p.
IdentifiersURN: urn:nbn:se:liu:diva-90618DOI: 10.1021/cg060076sOAI: oai:DiVA.org:liu-90618DiVA: diva2:613897