{1}_{infty}rm [M^{II}(4,4^{prime}-bipy)(H_{2}O)_{4}](ADC)cdot 4H_{2}O$ with MII = Mn, Fe, Co, Cu: Four New Coordination Polymers based on 4,4′-Bipyridine (4,4′-bipy) and Acetylenedicarboxylate (ADC2-)

• Published in: Zeitschrift für anorganische und allgemeine Chemie (1950) Vol. 635; no. 6-7; pp. 914 - 919
• Main Authors: Stein, Irena, Ruschewitz, Uwe
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.05.2009; WILEY‐VCH Verlag
• Subjects: Coordination polymer; Crystal engineering; Crystal structure; Dicarboxylate; Transition metals
• ISSN: 0044-2313; 1521-3749
• DOI: 10.1002/zaac.200900011

By slow diffusion of 4,4′‐bipyridine (4,4′‐bipy) into a solution of a respective metal salt and acetylenedicarboxylic acid (H2ADC), single crystals of four new coordination polymers ∞1[MII(4,4′‐bipy)(H2O)4](ADC)·4H2O (MII = Mn, Fe, Co; P$\bar{1}$, Z = 1) (1–3) and ∞1[Cu(4,4′‐bipy)(H2O)4](ADC)·4H2O (C2/c, Z = 4) (4) were obtained. In all compounds octahedral MII(H2O)4N2 units are connected by 4,4′‐bipyridine ligands to form chain‐like polymers. In 4 these octahedra are elongated due to Jahn–Teller distortion. The acetylenedicarboxylate dianions are bound by hydrogen bonds to the ∞1[MII(4,4′‐bipy)2/2(H2O)4] chains to form a 3 D network. Surprisingly, the acetylenedicarboxylate dianions are not part of the first coordination sphere of the transition metal ions.