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Properties of the Elements and Inorganic Compounds
Published in W. M. Haynes, David R. Lide, Thomas J. Bruno, CRC Handbook of Chemistry and Physics, 2016
W. M. Haynes, David R. Lide, Thomas J. Bruno
Copper(II) ferrocyanide Copper(II) ferrous sulfide Copper(I) fluoride Copper(II) fluoride Copper(II) fluoride dihydrate Copper(II) formate Copper(II) formate tetrahydrate Copper(II) gluconate Copper(II) hexafluoro-2,4-pentanedioate Copper(II) hexafluorosilicate tetrahydrate Copper(I) hydride Copper(II) hydroxide Copper(II) iodate Copper(II) iodate monohydrate Copper(I) iodide Copper(I) mercury iodide Copper(II) molybdate Copper(II) nitrate Copper(II) nitrate hexahydrate Copper(II) nitrate trihydrate Copper nitride Copper(II) oleate Copper(II) oxalate Copper(II) oxalate hemihydrate Copper(I) oxide Copper(II) oxide Copper(II) oxychloride hemiheptahydrate Copper(II) 2,4-pentanedioate Copper(II) perchlorate
Pyridine-based complexes of copper(II) chloride and bromide: ligand conformation effects on crystal structure. Synthesis, structure and magnetic behavior of Cu(2-Cl-3-X′py)2X2 [X, X′ = Cl, Br]
Published in Journal of Coordination Chemistry, 2019
Robert J. Dubois, Christopher P. Landee, Melanie Rademeyer, Mark M. Turnbull
A search of the Cambridge Crystallographic Database [13] was conducted using the following search parameters:Copper(II) complexes with two coordinated halide ions (no restriction on the identity of the halide ion) and two coordinated pyridine-based moieties (those containing a pyridine ring bonded through the N-atom to the Cu(II) ion). No restrictions were placed on the coordination number of the Cu(II) ion to allow for the possibility of bridging halide ions. However, complexes with bridging or chelating pyridine-based substituents were not generally included in the final list as they restricted the geometry of the copper coordination sphere, virtually always generating cis-configurations in the case of chelating ligands. Some exceptions were included (vide infra) as they represented particular and unusual coordination spheres within the general constraints. Furthermore, all examples found were either copper(II) chloride or bromide complexes. We assume that this arises due to the generally poor solubility of copper(II) fluoride complexes, making crystallization and purification difficult, and the observation that iodide ion tends to reduce Cu(II) to Cu(I), although some exceptions are known.Complexes with more than four independent ligands were not included in the final selections as they restricted the ability of the complex to adopt either syn- or anti-geometries and reduced/prevented the complexes from developing bridging halide ion linkages.Complexes with excessively large substituents on the pyridine ring were not generally included as the final crystal packing could be controlled solely by the steric bulk and/or additional interactions between the ancillary groups (intermolecular) rather than by the central core of the complex.Only square-planar compounds, or mildly distorted square-planar compounds, were considered as the lack of a well-defined coordination plane renders the definition of the syn- and anti-geometries moot.