Secondary Interactions in Halogenated Werner Clathrates

Abstract

Halogenated Werner clathrates which contain Cl, Br, and I as part of the host and guest moieties have been synthesized and characterized by single X-ray diffraction, thermal analysis, and solid−vapor kinetics of formation. The compounds derived from NiI 2 are ionic, forming I − salts and which yielded tri-iodide anions by the addition of I 2 . Secondary interactions involving halogen•••halogen and hydrogen bonds have been fully characterized and the structures were correlated with the thermal decomposition results.

Halide Ion Embraces in Tris(2,2′-bipyridine)metal Complexes

“…Interactions at the periphery of metal complexes have been known to be of importance for many years, although they have not always been associated with the term "supramolecular". The structural studies of Nassimbeni have been particularly important in identifying the commonest types of interactions and provide a solid body of evidence for the hydrogen-bonding interactions with Werner-type coordination compounds [59][60][61][62][63][64][65]. Studies such as these relate directly to the "outer-sphere" complexes implicated in studies of substitution mechanisms, in which the incoming ligands are non-covalently associated with the starting complexes (A-type mechanisms) or intermediates (D-type mechanisms) [66,67].…”

Cocrystal of 4-Nitrophenol and 2,1,3-Benzoselenadizole

“…In recent years, organic cocrystals of variable stoichiometry based on intermolecular interactions became an active area in crystal engineering [1][2][3]. Non-covalent interactions between the cocrystal-building units play very important roles for the formation of molecular aggregates [4][5][6]. Among these interactions, the hydrogen bond is the most important and appears in most crystal structures [7].…”