Copper(II) halide salts and complexes of 4-amino-2-fluoropyridine: synthesis, structure and magnetic properties

Synthesis, structure, and magnetic properties of a family of copper(II) complexes and salts of isoquinoline: (Isoquinoline) Cu(X)2 [X = Cl, Br] and (isoquinolinium)2CuX4(H2O) [X = Cl, Br; n = 0,1]

“…Compound 6 was unexpected, but does provide important support for reactions previously reported. On a few occasions, we 41 and others 42 have observed bromination of aromatic rings during the preparation of CuBr2 salts in HBr solution. It has been proposed to occur via airoxidation of bromide ion to produce Br2 which can subsequently undergo an electrophilic addition to the aromatic ring.…”

Zn(II) Heteroleptic Halide Complexes with 2-Halopyridines: Features of Halogen Bonding in Solid State

“…Among the great variety of building blocks able to form XB, there is a specific group of neutral complexes with a general formula [M II (XPy) 2 Y 2 ], where XPy is halogen-mono- or poly-substituted pyridine and Y is halide ligand. In most of cases [ 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ], there appears: XB between X and Y in a solid state [ 26 , 27 , 28 , 29 , 30 , 31 ], featuring diverse connectivity patterns [ 32 , 33 , 34 ]; the prominence of these interactions for this class even inspired its “visualization” by experimental charge density determination [ 33 ], which is not common in XB studies. According to the Cambridge Structural Database (CSD), such complexes are best represented for M = Cu [ 22 , 24 , 26 , 35 ].…”

Heteroleptic Binuclear Iodoacetate Copper(II) Complexes with 3-Bromopyridine and 4-Ethylpyridine: Crystal Structures and Peculiarities of Contacts Halogen···Halogen

“…The search for new "building blocks" capable of halogen bonding is an interesting task from the viewpoint of supramolecular coordination chemistry. In particular, neutral complexes of the [M II L 2 X 2 ] type (X = Cl, Br, I; L is the halogen-containing N-donor ligand) [8][9][10][11], polyhalides [12,13], perfluorinated arenes [14,15], etc. are considered as candidates to this role.…”