INOR 159 |
| The two-dimensional mixed transition-metal lanthanide polymer (1) [CH3CH2NH3]4[Gd(O2CCO2)(NO3)2(H2O)]2[Cu(NO3)2(pic)2]•2H2O (where pic = picolinate) was synthesized in the ionic liquid ethylammonium nitrate (EAN). EAN was used as solvent for the reaction of squaric acid (H2C4O4), LiOH, Hpic, Gd(NO3)3, and Cu(NO3) 2 in a temperature-controlled water bath. Elemental analysis confirms its identity as an oxalate-containing polymer formed from the oxidative decomposition of squarate. The crystal structure of (1) has been determined. This structure is analogous to a copper (II)-cerium (III) polymer that has already been synthesized; however, its synthesis requires completely different reaction conditions and reagents. More than one reaction has been found to produce polymer (1) with excess H2C4O4 and Gd(NO3)3 and a less than stoichiometric amount of Cu(NO3)2. Thermal studies have also been done on polymer (1), and evidence shows that the oxide product formed shows an x-ray diffraction pattern different from those of any known Cu2+ or Gd3+ oxides. Magnetic studies were also conducted on the novel compound. |
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Coordination Chemistry: Characterization and Applications
7:00 PM-10:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster
Sci-Mix
Division of Inorganic Chemistry |