Three Novel Coordination Polymers Based on Tris(p-carboxyphenyl)phosphane Oxide: Syntheses, Structural Characterization and Magnetic Properties

Publication date: Available online 14 February 2018 Source:Journal of Solid State Chemistry Author(s): Liangqin Huo, Liming Fan, Jie Zhang, Lingling Gao, Lijun Zhai, Xiaoqing Wang, Tuoping Hu Three coordination polymers (CPs), namely, {[Co3(HL)2(bib)3 (H2O)7]·12H2O}n (1), {[Co(HL)(bib)]·H2O}n (2), and {[Co1.5(L)(bibp)1.5 (H2O)]·1.5DMF·2EtOH·3H2O}n (3), have been synthesized from the tripodal ligand of tris(p-carboxyphenyl)phosphane oxide (H3L) with the help of 1,4-bis(imidazol-1-yl)benzene (bib) or 4,4'-bis(imidazol-1-yl)biphenyl (bibp). Structural analyses reveal that complex 1 features a 3D 4-connected {65·8}-cds net. 2 displays a 2D 6–connected {36·46·53}-hxl sheet based on the binuclear {Co2(COO)2} SBUs. Complex 3 shows a 3D (3,4,4)-connected net with {6·82}2{6·84·10}2{62·82·102} point symbol. Furthermore, the results of the variable-temperature magnetic susceptibilities indicate that complexes 1–3 have antiferromagnetic behavior between Co(II) ions. Graphical abstract

Source: Journal of Solid State Chemistry - February 15, 2018 Category: Chemistry Source Type: research