Coordination polymers with adamantanediacetate bridges: syntheses, structures, and magnetic properties

Abstract

Two new coordination polymers, [CoL(bpp)] n (1) and [MnL(bipy)] n Á0.25nH 2 LÁ0.5nH 2 O (2) (H 2 L = 1,3-adamantanediacetic acid, bpp = 1,3-bis(4-pyridyl)propane, bipy = 4,4 0 -bipyridine), were synthesized and characterized by single crystal X-ray diffraction, IR spectroscopy, and thermal analysis. Complex 1 is an one-dimensional (1D) chain structure of Co(II) bridged by L 2-as well as bpp. Complex 2 consists of a two-dimensional (2D) (3,6)-connected topology layer structure. Variable temperature magnetic susceptibility measurements in the range of 2-300 K reveal the existence of weak antiferromagnetic interactions in two complexes with J = -1.74 cm -1 , g = 2.26 for 1 and J = -0.10 cm -1 , g = 1.67 for 2.