A mixed‐valence copper(I/II) coordination polymer directed with a bifunctional soft‐hard pyrazolate−carboxylate ligand. Issue 8 (22nd March 2021)

• Record Type: Journal Article
• Authors: Menzel, Saskia; Höfert, Simon‐Patrick; Öztürk, Secil; Schmitz, Alexa; Janiak, Christoph
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 647:Issue 8(2021)
• Page Start: 803
• Page End: 808
• Publication Date: 2021-03-22
• Subjects: Mixed-valence -- copper -- bifunctional ligand -- metallo-ligand -- coordination polymer; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.202000428
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract: A mixed‐valent, one‐dimensional Cu(I/II) coordination polymer with the formula [Cu II {Cu I 3 (Hmpba)(mpba)2 }DMF] ⋅ ∼3DMF was obtained with the bifunctional ligand 4‐(3, 5‐dimethyl‐1 H ‐pyrazol‐4‐yl)benzoic acid (H2 mpba) in N, N ‐dimethylformamide (DMF) via solvothermal reaction. The compound exhibits a trinuclear {Cu I 3 (Hmpba)(mpba)2 } 2− metallo‐linker with the softer Cu(I) linearly‐coordinated by the softer pyrazolate nitrogen donor atom. This metallo‐linker connects the harder Cu(II) ions through its harder carboxylate groups into a chain structure. Two Cu(II) ions form a paddlewheel unit and are, thus, surrounded by four carboxylate groups. Cu(II) is five‐coordinated with a terminal DMF ligand. Parallel chains are connected into supramolecular layers through the common R2 2 (8) hydrogen‐bond motif of the singly‐deprotonated carboxyl groups of the Hmpba ligand. These layers are further organized by Cu(I)−Cu(I) interactions into a 3D supramolecular array. Abstract :