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A mixed‐valence copper(I/II) coordination polymer directed with a bifunctional soft‐hard pyrazolate−carboxylate ligand
Author(s) -
Menzel Saskia,
Höfert SimonPatrick,
Öztürk Secil,
Schmitz Alexa,
Janiak Christoph
Publication year - 2021
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.202000428
Subject(s) - carboxylate , chemistry , supramolecular chemistry , deprotonation , linker , crystallography , ligand (biochemistry) , bifunctional , copper , hydrogen bond , benzoic acid , dimethylformamide , stereochemistry , coordination polymer , polymer chemistry , ion , solvent , molecule , crystal structure , organic chemistry , biochemistry , receptor , computer science , catalysis , operating system
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 (H 2 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 R 2 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.