Syntheses,Structures, and Magnetic Properties of Two Mn(II) Coordination Polymers Based on 4-Fluorocinnamic Acid and 1,10-Phenanthroline |
| |
| Authors: | H X Kang Y Q Fu F Y Ju G L Li X L Li G Z Liu |
| |
| Institution: | 1.School of Food and Drug, Luoyang Normal University,Luoyang Normal University,Henan, Luoyang,P.R. China;2.College of Chemistry and Chemical Engineering,Luoyang Normal University,Henan, Luoyang,P.R. China |
| |
| Abstract: | Two Mn(II) coordination polymers, {Mn3 (Pfca)6(Phen)2] · 2DMF} n (I) and Mn(Pfca)2(Phen)(H2O)] n (II) (HPfca = 4-fluorocinnamic acid, Phen = 1,10-phenanthroline), were synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, and singlecrystal X-ray diffraction (CIF files CCDC nos. 967513 (I), 1542972 (II)). Complex I crystallizes in the triclinic crystal system, space group Pī with a = 11.0821(11), b = 12.2632(12), c = 15.0288(15) Å, α = 87.3760(10)°, β = 88.4610(10)°, γ = 81.2220(10)°, V = 2016.0(3) Å3, ρc = 1.369 g/cm3, M r = 1662.25, Z = 1, F(000) = 853, μ = 0.543 mm–1, the final R = 0.0592 and wR = 0.1681 for 15498 observed reflections with I > 2σ(I). Complex II is of monoclinic system, space group P21/c with a = 18.0539(19), b = 8.5806(9), c = 18.758(2) Å, β = 116.5700(10)°, V = 2599.0(5) Å3, ρc = 1.491 g/cm3, M r = 583.44, Z = 4, F(000) = 1196, μ = 0.567 mm–1, the final R = 0.0337 and wR = 0.0853 for 18139 observed reflections with I > 2σ(I). Complex I features linear Mn(II)-trinuclear units, which form 1D chain structure through F···F weak interactions, and complex II is 1D polymeric Mn(II)-chains. Antiferromagnetic coupling interactions exist within Mn(II)- carboxylate trinuclear in I (J =–0.40 cm–1) and Mn(II)-carboxylate chain in II (J =–0.45 cm–1). |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
