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Treatment of Ln(NO 3 ) 3 ·6H 2 O with 1, 2-phenylenedioxydiacetic acid (H 2 PDOA) in ethanol leads to the unusual 1-D double chain complexes {[Ln(PDOA) 1.5 (H 2 O) 3 ]·H 2 O} n (Ln=Sm (1), Eu (2), Dy (3)), in which the Ln 3+ ions are linked by pentadentate and bideatate PDOA ligands in two different directions. The chain...
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