Two-dimensional square-grid frameworks formed by self-associating copper(II) complexes with 1-(3-pyridyl)- and 1-(4-pyridyl)-substituted butane-1,3-diones

• Published in: Acta crystallographica. Section C, Crystal structure communications Crystal structure communications, 2006-09, Vol.62 (9), p.m443-m447
• Main Authors: Vreshch, Volodimir D., Lysenko, Andrey B., Krautscheid, Harald, Domasevitch, Konstantin V.
• Format: Article
• Language: English
• Subjects: Chemical reactions; Condensed matter: structure, mechanical and thermal properties; Copper; Crystal structure; Crystalline state (including molecular motions in solids); Crystallography; Exact sciences and technology; Hydrogen bonds; Organic chemicals; Physics; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Theory of crystal structure, crystal symmetry; calculations and modeling
• ISSN: 0108-2701; 1600-5759
• DOI: 10.1107/S0108270106025339

In bis­[1‐(3‐pyridyl)butane‐1,3‐dionato]copper(II) (the Cu atom occupies a centre of inversion), [Cu(C9H8NO2)2], (I), and bis­[1‐(4‐pyridyl)butane‐1,3‐dionato]copper(II) methanol solvate, [Cu(C9H8NO2)2]·CH3OH, (II), the O,O′‐chelating diketonate ligands support square‐planar coordination of the metal ions [Cu—O = 1.948 (1)–1.965 (1) Å]. Weaker Cu⋯N inter­actions [2.405 (2)–2.499 (2) Å], at both axial sides, occur between symmetry‐related bis­(1‐pyridylbutane‐1,3‐dion­ato)copper(II) mol­ecules. This causes their self‐organization into two‐dimensional square‐grid frameworks, with uniform [6.48 Å for (I)] or alternating [4.72 and 6.66 Å for (II)] inter­layer separations. Guest methanol mol­ecules in (II) reside between the distal layers and form weak hydrogen bonds to coordinated O atoms [O⋯O = 3.018 (4) Å].