- Turkish Journal of Chemistry
- Vol: 36 Issue: 4
- Microwave-assisted synthesis, spectroscopy, and crystal structures of [(H2 -(4,4 -bipy)]2+ [Cr2O7] 2...
Microwave-assisted synthesis, spectroscopy, and crystal structures of [(H2 -(4,4 -bipy)]2+ [Cr2O7] 2− and one-dimensional polymeric {[Mn(4,4 -bipy)(Cr2O7)(H2O)2 ]}n compounds
Authors : Hirihattaya Phetmung, Munee Wateh, Chaveng Pakawatchai
Pages : 556-566
Doi:10.3906/sag-1211-66
View : 14 | Download : 4
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :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.Keywords : Microwave assisted synthesis, organic-inorganic framework, diprotonated 4, 4'-bipyridium, eclipsed conformation