Self-assembly of the robust Keggin cluster [SiW12O 40]4- and metalloporphyrin building blocks [M(TpyPH n)]n+ under hydrothermal conditions gives two new organic-inorganic hybrid solid compounds. The hydrothermal reactions of H4SiO4·12WO3·xH2O, Cu(NO3)2·2.5H2O, meso-tetra(4-pyridyl) porphine (H2TpyP) and H2O at 200 °C for 72 h yield a solid compound [Cu(TpyPH3)]2[Cu(TpyPH2)] [SiW12O40]2·8H2O (1). Using ZnCl2 instead of Cu(NO3)2·2.5H 2O in the syntheses leads to the crystallization of a compound [Zn(TpyPH4)(H2O)][SiW12O40] ·3H2O (2). Both compounds consist of discrete anionic α-[SiW12O40]4- clusters, cationic metalloporphyrins and crystalline water molecules. Hydrogen bonds, π-π aromatic interactions and CH···π interactions in these two new hybrid solids lead to the formation of 3D framework structures. Pseudo-hexagonal channels are formed by polyoxometalates and are occupied by one-dimensional metalloporphyrin arrays. Both compounds were characterized by single crystal X-ray, UV-Vis, IR spectroscopy and thermogravimetric analysis.
|Number of pages||6|
|Journal||Inorganica Chimica Acta|
|State||Published - Sep 1 2011|
Bibliographical noteFunding Information:
We are grateful for financial support from internal grant of WKU, NSF EPSCoR ( 4800001974 ), and KY EPSCoR ( RSF-030-06 ).
- Copper complexes
- Keggin cluster
- X-ray crystal structure
- Zinc complexes
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry