Cobalt(II) and nickel(II) complexes of isoquinoline-1-carboxylate

• Published in: Acta crystallographica. Section C, Crystal structure communications Crystal structure communications, 2002-12, Vol.58 (12), p.m578-m580
• Main Authors: Muranishi, Yasunori, Okabe, Nobuo
• Format: Article
• Language: English
• Subjects: Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; Inorganic compounds; Metal complexes; Physics; Structure of solids and liquids; crystallography; Structure of specific crystalline solids
• ISSN: 0108-2701; 1600-5759
• DOI: 10.1107/S0108270102018942

trans‐Di­aqua­bis­(iso­quinoline‐1‐carboxyl­ato‐κ2N,O)­cobalt(II) dihydrate, [Co(C10H6NO2)2(H2O)2]·2H2O, and trans‐di­aqua­bis­(iso­quinoline‐1‐carboxyl­ato‐κ2N,O)­nickel(II) dihydrate, [Ni(C10H6NO2)2(H2O)2]·2H2O, contain the same isoquinoline ligand, with both metal atoms residing on a centre of symmetry and having the same distorted octahedral coordination. In the former complex, the Co—O(water) bond length in the axial direction is 2.167 (2) Å, which is longer than the Co—O(carboxylate) and Co—N bond lengths in the equatorial plane [2.055 (2) and 2.096 (2) Å, respectively]. In the latter complex, the corresponding bond lengths for Ni—O(water), Ni—O(carboxylate) and Ni—N are 2.127 (2), 2.036 (2) and 2.039 (3) Å, respectively. Both crystals are stabilized by similar stacking interactions of the ligand, and also by hydrogen bonds between the hydrate and coordinated water molecules.