Synthesis of Coordination Polymers from the Heterometallic Carboxylate Complexes with Chelating N-Donor Ligands

New trinuclear Cd–Ln molecular complexes [EuCd 2 (O 2 CC 6 F 5 ) 6 (NO 3 )(Bipy) 2 ] ( I , Bipy is 2,2'-bipyridine) and [LnCd 2 (Bzo) 6 (NO 3 )(Phen) 2 ] · 4MeCN (Ln = Tb ( II) , Eu ( III ), Bzo is anion of 3,5-di- tert -butylbenzoic acid, Phen is 1,10-phenanthroline) are studied. Their structures are determined by X-ray structure analysis (СIF files CCDC nos. 1938125 ( I ), 1938124 ( II )) or by X-ray diffraction analysis ( III ), and the photoluminescence properties are studied. The reactions of complexes I and II with terephthalic acid (H 2 Bdc) are accompanied by the destruction of the heterometallic molecules to form 2D coordination polymers [Cd 3 (Bbdc) 3 (Bipy) 2 ] 3 n · 4 n MeCN · n H 2 O ( IV ) and [Cd 2 (Bdc) 2 (Phen) 2 ] n · 2 n DMF ( V ) (СIF files CCDC nos. 1938126 and 1937492, respectively).