Anion influence on transformations of a nonporous 3D to porous 3D coordination polymer

Hashemi L., Morsali A., Buyukgungor O.

NEW JOURNAL OF CHEMISTRY, cilt.38, sa.7, ss.3187-3192, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 38 Sayı: 7
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1039/c4nj00175c
  • Dergi Adı: NEW JOURNAL OF CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3187-3192
  • Ondokuz Mayıs Üniversitesi Adresli: Evet

Özet

Reversible anion-exchange of nonporous 3D lead(m) coordination polymers with ligand 2,5-bis(4-pyridyl)-3,4diaza-2,4-hexadiene (4-bpdh), from [Pb(4-bpdh)(mu.-NCS)(2)](n)-, (1) to intermediate 3D [Pb(4-bpdh)(mu-NCS)(NO3)](n),-, (2) and then porous 3D coordination polymers of [Pb(4-bpdh)(NO3)(2)(H2O)](n), (3) and [Pb(4-bpdh)(NO3)(2)](n), (4) by solid state anion-replacement processes under mechanochemical reactions, have been studied. The reversible solid state structural transformations of compound 1 to compound 2 and then 3 and 4 by anion-replacement have been verified by PXRD and IR spectroscopy. Pb5O4SO4, Pb-2(SO4)O and PbO nanoparticles were obtained by thermal decomposition of compounds 1, 2 and 3, 4 at 600 degrees C under an air atmosphere, respectively. These nanoparticles were characterized by powder X-ray diffraction (PXRD) and scanning electron microscopy (SEM).