A Dynamic Crystal-to-Amorphous Transformation Microporous Zn-II Mixed Neutral-ligand Metal-organic Polymer {[Zn(bpp)(2)(mu-4,4 '-bipy)(H2O)(2)](ClO4)(2)center dot H2O}(n)

作者：Amiri Maryam Ghoreishi; Morsali Ali^*; Zeller Matthias

来源：Zeitschrift fur Anorganische und Allgemeine Chemie, 2009, 635(11): 1673-1677.

DOI：10.1002/zaac.200801346

• Zinc
• 1,3-Bis(4-pyridyl)propane
• 4,4 '-Bipyridine
• Coordination chemistry
• X-ray diffraction

A new rarely reported Zn-II mixed-polypyridine coordination polymer with both rigid and flexible spacers, {[Zn(bpp)(2)(mu-4,4'-bipy)(H2O)(2)](ClO4)(2)center dot H2O}(n) (1), has been synthesized and characterized by elemental analysis, IR-, H-1 NMR-, C-13 NMR spectroscopy and single-crystal X-ray diffraction. The thermal stability of compound 1 was studied by thermal gravimetric (TG) and differential thermal analyses (DTA). The single-crystal X-ray structure of I shows that the complex has been formed from a 1D poly-mer as a result of bridging by the 4,4'-bipy ligands. Solution and solid-state luminescent spectra of file compound I indicate intense fluorescent emissions at ca. 353.6 and 468.8 nm, respectively Removal of the interstitial water guest molecules results in a loss of crystallinity, but exposure to water vapor reestablishes the original structure, thus constituting 1 as a third-generation porous framework.

• 出版日期2009