New organic–inorganic hybrid assemblies based on copper(I) ion, bichelate-bridging ligand and Lindqvist-type polyoxometalate
Three new organic–inorganic hybrid compounds, namely [Cu{sup I}L{sub p}]{sub 2}[W{sub 6}O{sub 19}]·H{sub 2}O (1), [Cu{sup I}L{sub p}]{sub 3}[W{sub 6}O{sub 19}]Cl (2) and [Cu{sup I}L{sub p}]{sub 2}[W{sub 6}O{sub 19}]·2H{sub 2}O (3) (L{sub p}=α,α′-bis-[3-(2-pyridyl)pyrazol-1-yl]-1,4-dimethylbenzene) based on copper(I) ion, a neutral N-donor bichelate-bridging ligand (L{sub p}) and a Lindqvist-type polyoxometalate (POM) [W{sub 6}O{sub 19}]{sup 2−}, have been hydrothermally prepared under different synthetic conditions and structurally characterized by elemental analyses, IR spectra, TG analyses, powder X-ray diffraction (PXRD), and single-crystal X-ray diffraction analyses. Compounds 1 and 2 contain two different but topologically similar meso-helical chainlike coordination moieties. Compound 3 contains both left- and right-handed chiral “mobius strip” units. These cationic meso-helical chains and “mobius strip” units in compounds 1–3 are further combined with Lindqvist-type polyoxoanions to form 3-D supramolecular assemblies through extensive electrostatic forces and/or π–π interactions. The photo-luminescent properties of 1–3 have also been investigated, which are mainly attributed to the L{sub p} ligand-centered emission. - Graphical abstract: Three new hybrid compounds based on same Cu(I) ion, bichelate-bridging ligand and [W{sub 6}O{sub 19}]{sup 2−} building blocks were synthesized. Various structural features of three compounds were tuned by different synthetic conditions. - Highlights: • New compounds based on Cu(I), bichelate-bridging ligand and POM were prepared. • Compounds 1 and 2 contain two different but topologically similar meso-helical chains. • Compound 3 contains both left- and right-handed chiral “mobius strip” units. • Compounds 1–3 exhibit the ligand-centered luminescent property.
- OSTI ID:
- 22334261
- Journal Information:
- Journal of Solid State Chemistry, Vol. 215; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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