title: Encapsulation of [(SO₄)₄(H₂O)1₁₂]⁸⁻ clusters in a metal organic framework of pyridyl functionalized cyanuric acid based tris-urea.
abstract: Encapsulation of hydrated sulfate in a bowl-shaped metal organic coordination polymer formed by Zn(2+) assisted self-assembly of a 3-pyridyl terminated cyanuric acid platform based urea receptor is reported in aqueous medium. Trapping of an unusual [(SO4)4(H2O)12](8-) cluster in a [Zn(H2O)6](2+) capped self-assembled structure is characterized by single crystal X-ray crystallography. Furthermore, selective binding of SO4(2-) is established from the (1)H-NMR titration study.
authors.affiliation: Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India. icpg@iacs.res.in.
authors.forename: Ranjan
authors.initials: R
authors.lastname: Dutta
authors.forename: Bidyut
authors.initials: B
authors.lastname: Akhuli
authors.forename: Pradyut
authors.initials: P
authors.lastname: Ghosh
mesh_terms: D000838:Anions; D002021:Buffers; D002625:Chemistry, Organic / Q000379:methods*; D018360:Crystallography, X-Ray; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy; D008670:Metals / Q000737:chemistry; D008968:Molecular Conformation; D015394:Molecular Structure; D009584:Nitrogen / Q000737:chemistry; D009930:Organic Chemicals / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013431:Sulfates / Q000737:chemistry*; D014227:Triazines / Q000737:chemistry; D014508:Urea / Q000737:chemistry; D014867:Water / Q000737:chemistry; D015032:Zinc / Q000737:chemistry*
chemical_list: D000838:Anions; D002021:Buffers; D008024:Ligands; D008670:Metals; D009930:Organic Chemicals; D011108:Polymers; D013431:Sulfates; D014227:Triazines; D014867:Water; D014508:Urea; C004632:cyanuric acid; D015032:Zinc; D009584:Nitrogen