Ghosh, Soumyajit published the artcileCo-crystals of caffeine with substituted nitroanilines and nitrobenzoic acids: Structure-mechanical property and thermal studies, Recommanded Product: 4-Iodo-3-nitroaniline, the main research area is structure mech property thermal cocrystals caffeine; caffeine cocrystal substituted nitroaniline nitrobenzoic acid crystallog.
Nine new 1 : 1 co-crystals of caffeine with some halogenated nitroanilines and two nitrobenzoic acids were synthesized. These new caffeine (CAF) co-crystals, with 4-nitroaniline (4NA), 4-fluoro-3-nitroaniline (4F3NA), 4-chloro-3-nitroaniline (4Cl3NA), 4-iodo-3-nitroaniline (4I3NA), 2-fluoro-5-nitroaniline (2F5NA), 2-chloro-5-nitroaniline (2Cl5NA), 2-iodo-4-nitroaniline (2I4NA), 2,4-dinitrobenzoic acid (24DNB), 2-fluoro-5-nitrobenzoic acid (2F5NB), are characterized by single crystal x-ray diffraction, DSC, TGA and IR spectroscopy. The co-crystals adopt a range of structures, two-dimensional (2D) flat layer, corrugated layer and 3-dimensional interlocked structures. Crystals allowed us to establish a structure-mech. property relation by using a simple mech. deformation (qual.) method. The 2-dimensional flat layer crystals (CAF/24DNB, CAF/2Cl5NA and CAF/2I4NA), which have strong intralayer and weak interlayer interactions show shear deformation behavior, while those with weak intralayer interactions (CAF/4Cl3NA and CAF/4I3NA) show brittle fracture on application of a mech. stress. The structures with corrugated layers (CAF/2F5NA) or 3-dimensional interlocked packing (CAF/NA, CAF/2F5NB and CAF/4F3NA) also show brittle behavior. The authors also show the need for a wide initial search, targeting even the least expected synthons, to improve the efficiency of co-crystal screening.
CrystEngComm published new progress about Brittle fracture. 105752-04-3 belongs to class iodides-buliding-blocks, name is 4-Iodo-3-nitroaniline, and the molecular formula is C6H5IN2O2, Recommanded Product: 4-Iodo-3-nitroaniline.
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com