The formation of a pair co-crystals based upon isosteric halogen-bond donors, namely 1,4-diiodoperchlorobenzene and iodoperchlorobenzene, along with the acceptor 4,4-bipyridine is reported. As expected, components in each co-crystal engage halogen bonding interactions resulting one-dimensional chain-like structure. In particular, containing primarily held together by I···N bonds while solid iod...

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Five crystal structures of hydrogen-bonded complexes (N-(p-iodophenyl)-M-(p-cyanophenyl)melamine.barbital, N,M-diphenylmelamine.S,5-dimethylbarbituric acid, 2-amino-4( (m-bromophenyl)amino)-6-chloro-1,3,5-triazine.barbital, melamine.5,5-dibromobarbituric a id, and melamine.barbituric acid) are presented. These particular components represent perturbations on the molecules that were previously u...

Halogen bonds mediated by iodine (Z = 53) can be more affected relativistic effects than halogen astatine 85).

Halogen bonding (XB) non-covalent interactions can be observed in compounds containing chlorine, bromine, or iodine which can form directed close contacts of the type R1-XY-R2, where the halogen X acts as a Lewis acid and Y can be any electron donor moiety including electron lone pairs on hetero atoms such as O and N, or π electrons in olefin double bonds and aromatic conjugated systems. In thi...

The title compound, C(8)H(6)INS, is essentially planar, the largest deviation from the mean plane being for the I atom [0.075 (3) Å]. The crystal structure is mainly stabilized by inter-molecular C-I⋯N halogen bonds, forming zigzag supra-molecular chains in [10]. Relatively short off-set π-π contacts [centroid-centroid distance = 3.758 (2) Å] between the thia-zole rings of inversion-related mol...