Solid state chemistry of organic polyvalent iodine compounds. VII. The relationships between crystal packing modes, solid-state intermolecular interactions, and infrared spectra of benzoxiodole compounds

1975 ◽  
Vol 14 (4) ◽  
pp. 408
Keyword(s):  
Solid State ◽  
Intermolecular Interactions ◽  
Infrared Spectra ◽  
Crystal Packing ◽  
Solid State Chemistry ◽  
Iodine Compounds

scholarly journals Convenient Access to Functionalized Non-Symmetrical Atropisomeric 4,4′-Bipyridines

Compounds ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 58-74
Author(s):  
Emmanuel Aubert ◽  
Emmanuel Wenger ◽  
Paola Peluso ◽  
Victor Mamane
Keyword(s):  
Solid State ◽  
Intermolecular Interactions ◽  
Medicinal Chemistry ◽  
Crystal Packing ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Halogen Bonds ◽  
Cross Coupling Reactions ◽  
Cyano Groups ◽  
Post Functionalization

Non-symmetrical chiral 4,4′-bipyridines have recently found interest in organocatalysis and medicinal chemistry. In this regard, the development of efficient methods for their synthesis is highly desirable. Herein, a series of non-symmetrical atropisomeric polyhalogenated 4,4′-bipyridines were prepared and further functionalized by using cross-coupling reactions. The desymmetrization step is based on the N-oxidation of one of the two pyridine rings of the 4,4′-bipyridine skeleton. The main advantage of this methodology is the possible post-functionalization of the pyridine N-oxide, allowing selective introduction of chlorine, bromine or cyano groups in 2- and 2′-postions of the chiral atropisomeric 4,4′-bipyridines. The crystal packing in the solid state of some newly prepared derivatives was analyzed and revealed the importance of halogen bonds in intermolecular interactions.

Halogen bonding between entirely negative fluorine atoms? Evidence from the crystal packing of some gold(i) and gold(iii) complexes with extensively fluorinated m-terphenyl ligands and triphenylphosphane

CrystEngComm ◽  
2020 ◽  
Vol 22 (48) ◽  
pp. 8285-8289
Author(s):  
Alexandru Sava ◽  
Krisztina T. Kegyes ◽  
Bianca T. Popuş ◽  
Bernadette C. Dan ◽  
Cristian Silvestru ◽  
...  
Keyword(s):  
Solid State ◽  
Intermolecular Interactions ◽  
Crystal Packing ◽  
Halogen Bonding ◽  
Terphenyl Ligands

Intermolecular interactions between fluorine atoms, analogous to halogen bonding, are able to drive the solid-state arrangement of molecules.

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