Görüntüleme
13
A compound (1), [H2-(4,4'-bipy)]2+[(Cr2O7)]2- and a metal organic-inorganic coordination framework (2), [Mn(4,4'-bipy)(Cr2O77)(H2O)2] (4,4'-bipy=4,4' -bipyridine) were successfully synthesized by microwave method. Their characterization was performed by single crystal X-ray crystallography and FT-IR spectroscopy. The crystal structure of 1 revealed a diprotonated 4,4'-bipyridium dichromate compound while compound 2 is an onedimensional (1D) polymer in which (Cr2O7)2- acts as a bridging ligand supporting the formation of infinite {[Mn(4,4'-bipy)(Cr2O7)(H2O)2]}n polymeric chains. The geometry of the 4,4'-bipy ring in 1 is typical coplanar, but twists in 2. In the free molecule 1, dichromate ligand adopts an eclipsed conformation, but adopts a staggered conformation in complex. The principal features of the crystal supramolecularity of 1 and 2 are non-covalent weak interactions which occurred via N-H...O and C-H...O hydrogen bonding.
Alan : Fen Bilimleri ve Matematik
Dergi Türü : Uluslararası
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