Abstract
Two novel cadmium adipate coordination polymers [Cd{O~2~C(CH~2~)~4~CO~2~}{1,10‐phen}]~n~ (1) and [Cd~2~(C~2~O~4~){O~2~C(CH~2~)~4~CO~2~(OH~2~)~2~}{2,2′‐bipy}]·H~2~O (2) [adipic acid = HO~2~C(CH~2~)~4~CO~2~H] have been hydrothermally synthesized and characterized by elemental analyses, IR spectroscopy, thermogravimetric analysis and single‐crystal X‐ray diffraction. Crystallographic data for 1: monoclinic, __C__2/c, a = 16.186(3) Å, b = 15.487(3) Å, c = 14.052(3) Å, β = 112.73(3)°, Z = 8. Crystal data for 2: monoclinic, Cc, a = 23.448(5) Å, b = 11.826(2) Å, c = 8.3163(17) Å, β = 99.08(3)°, Z = 4. The structural analysis reveals that 1 forms a novel one‐dimensional chain in which the binuclear Cd centers are linked by adipate anions. Compound 2 is the first example in which both a 2,2′‐bipy ligand and an oxalate group are found in the {M/adipate} system. Compound 2 possesses one‐dimensional sine‐ or cosine‐type chains, which are alternately connected together by the oxalate group to form a three‐dimensional framework. The structural determination reveals that the introduction of the oxalate ligand causes the dimensional transformation of the compounds. Compounds 1 and 2 show strong fluorescent properties at room temperature. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)