Source of materialAmixture of Mn(CH 3 COO) 2 · 4H 2 O(0.5 mmol, 0.120 g), 1,10-phenanthroline (phen, 0.5 mmol, 0.100 g), thiophene-2,5-dicarboxylic acid (0.5 mmol, 0.085 g) and H 2 O( 18 mL) in a 30 .mL Teflon-lined autoclave under autogenous pressure at 413 . Kfor seven days. After cooling to room temperature, yellow block-shaped crystals were collected by filtration and washed with distilled water in 39 . %y ield (based on Mn). Elemantal analysis -found: C, 47.0 .%; H, 4.9 %; N, 7.2 %; S, 4.1 %; calculated for C 30H38MnN4O14S: C, 47.1 %; H, 5.0 %; N, 7.3 %; S, 4.2 . %.
DiscussionRecently much attention has been paid to metal-organic hybrid materialsc ontaining paramagnetic metal ions with extended structures due to theirfascinating structural diversities and functional applications in the fields of molecular magnetism and material chemistry [1][2][3]. In as pontaneous assembly process, the structural information stored in the organic ligands is read by the metal ion through its coordination [4]. The choice of appropriate organic ligands and metal is important to construct distinct architectures, from which corresponding properties are derived [5].