Four Coordination Polymers Containing 2, 6‐Naphthalenedi­carboxylic Acid and 1, 10‐Phenanthroline: Synthesis, Structure, and Magnetic Properties1. Issue 3 (18th February 2013)

• Record Type: Journal Article
• Authors: Li, Xiuhua; Fang, Ming; Cui, Ping; Zhao, Bin
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 639:Issue 3/4(2013)
• Page Start: 626
• Page End: 632
• Publication Date: 2013-02-18
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201200427
• Languages: English
• ISSNs: 0044-2313

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>[Co(phen)(NDA)<sub>0.5</sub>(H<sub>2</sub>O)<sub>3</sub>]<bold>·</bold>H<sub>2</sub>O<bold>·</bold>0.5NDA (<bold>a</bold>) (NDA = 2, 6‐naphthalenedicarboxylate ions, phen = 1, 10‐phenanthroline), and four novel coordination polymers (CPs), [<italic>M</italic>(phen)(NDA)]<italic><sub>n</sub></italic> [<italic>M</italic> = Co (<bold>1</bold>), Ni (<bold>2</bold>), Mn (<bold>3</bold>), and Cd (<bold>4</bold>)], were synthesized under hydrothermal conditions. They were structurally characterized by single‐crystal X‐ray diffraction. Compound <bold>a</bold> was obtained by hydrothermal condition of 80 °C, displaying a zero dimension structure, and three coordinated water molecules located on the central Co<sup>2+</sup> ion. By decreasing the number of coordinated water molecules in <bold>a</bold> under high reaction temperature of 170 °C, the discrete motif of <bold>a</bold> was transferred into a 2D structure of <bold>1</bold>. Employing the same synthesizing condition like that of <bold>1</bold>, compounds <bold>2</bold>–<bold>4</bold> were prepared, of which <bold>2</bold> exhibited a 2D layer and compounds <bold>3</bold> and <bold>4</bold> feature novel 3D architectures. The magnetic susceptibilities of <bold>1</bold>–<bold>3</bold> were measured and discussed. There exist ferromagnetic coupling between the nearest metal ions in <bold>1</bold> and <bold>2</bold>, and the best theoretical fitting parameters were <italic>J</italic> = 3.96 cm<sup>–1</sup>, <italic>g</italic> = 2.42 for <bold>1</bold> and <italic>J</italic> = 3.44 cm<sup>–1</sup>, <italic>g</italic> = 2.02 for <bold>2</bold>. The study of the magnetic property of <bold>3</bold> shows the occurrence of weak antiferromagnetic interaction between Mn<sup>2+</sup> with fitting parameters of <italic>J</italic> = –0.80 cm<sup>–1</sup> and <italic>g</italic> = 2.03, appearing short‐range antiferromagnetic ordering around 9 K.</p> </abstract>