Synthesis, Structures, and Magnetic Properties of New Thiocyanato Coordination Polymers with 4‐(3‐Phenylpropyl)pyridine as Ligand1. Issue 11 (25th July 2014)

• Record Type: Journal Article
• Authors: Werner, Julia; Jess, Inke; Näther, Christian
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 640:Issue 11(2014)
• Page Start: 2161
• Page End: 2168
• Publication Date: 2014-07-25
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201400261
• Languages: English
• ISSNs: 0044-2313

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The reaction of different metal salts with 4‐(3‐phenylpropyl)pyridine (ppp) lead to the formation of compounds of composition M(NCS)<sub>2</sub>(ppp)<sub>4</sub> [M = Mn (<bold>Mn‐1</bold>); Fe (<bold>Fe‐1</bold>), Ni (<bold>Ni‐1</bold>); Cd (<bold>Cd‐1</bold>)], M(NCS)<sub>2</sub>(ppp)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub> [M = Mn (<bold>Mn‐2</bold>); Ni (<bold>Ni‐2</bold>)] and [M(NCS)<sub>2</sub>(ppp)<sub>2</sub>]<italic><sub>n</sub></italic> [M = Mn (<bold>Mn‐3</bold>); Ni (<bold>Ni‐3</bold>); Cd (<bold>Cd‐3</bold>)]. On heating compounds <bold>M‐1</bold> decompose without the formation of any ppp deficient intermediate. In contrast, on heating, <bold>Ni‐2</bold> transforms into a compound of composition <italic>M</italic>(NCS)<sub>2</sub>(ppp)<sub>2</sub> that does not correspond to <bold>Ni‐3</bold>. Unfortunately, this compound is of low crystallinity and therefore, its structure cannot be determined. The crystal structures of compounds <bold>M‐1</bold> and <bold>M‐2</bold> consist of discrete complexes, in which the metal cations are octahedrally coordinated. In compounds <bold>M‐3</bold> the metal cations are linked by pairs of μ‐1, 3‐bridging anions into chains. IR spectroscopic investigations show, that the value of the asymmetric CN stretching vibration depend on the coordination mode of the anionic ligand as well as on the nature of the metal cation. Magnetic measurements reveal that <bold>Ni‐3</bold> shows only Curie‐Weiss behavior without any magnetic anomaly. A similar behavior is also found for <bold>Ni‐3</bold>. Comparison of the magnetic properties of <bold>Ni‐3</bold> with those of similar compounds indicates that the magnetic properties are only minor influenced by the Co‐ligand.</p> </abstract>