Krishna, Gamidi Rama et al. published their research in Journal of the American Chemical Society in 2016 | CAS: 2670-38-4

3,4-Dichlorobenzamide (cas: 2670-38-4) belongs to amides. In primary and secondary amides, the presence of N–H dipoles allows amides to function as H-bond donors as well. Thus amides can participate in hydrogen bonding with water and other protic solvents; the oxygen atom can accept hydrogen bonds from water and the N–H hydrogen atoms can donate H-bonds. Amides can be recrystallised from large quantities of water, ethanol, ethanol/ether, aqueous ethanol, chloroform/toluene, chloroform or acetic acid. The likely impurities are the parent acids or the alkyl esters from which they have been made. The former can be removed by thorough washing with aqueous ammonia followed by recrystallisation, whereas elimination of the latter is by trituration or recrystallisation from an organic solvent.Formula: C7H5Cl2NO

Mechanically Flexible Organic Crystals Achieved by Introducing Weak Interactions in Structure: Supramolecular Shape Synthons was written by Krishna, Gamidi Rama;Devarapalli, Ramesh;Lal, Garima;Reddy, C. Malla. And the article was included in Journal of the American Chemical Society in 2016.Formula: C7H5Cl2NO This article mentions the following:

Controlling mech. properties of ordered organic materials remains a formidable challenge, despite their great potential for high performance mech. actuators, transistors, solar cells, photonics, and bioelectronics. A crystal engineering approach to design mech. reconfigurable, plastically flexible single crystals (of ∼10) of 3 unrelated types of compounds was demonstrated by introducing active slip planes in structures via different noninterfering supramol. weak interactions, van der Waals (vdW), π-stacking, and H bonding groups. Spherical hydrophobic groups, which assemble via shape complementarity (shape synthons), reliably form low energy slip planes, thus facilitating an impressive mech. flexibility, which allowed molding the crystals into alphabetical characters to spell out o r g a n i c c r y s t a l. The study, which reports the preparation of exotic plastic crystals by design, demonstrates the potential of soft interactions for tuning the mech. behavior of ordered mol. materials, including those from π-conjugated systems. In the experiment, the researchers used many compounds, for example, 3,4-Dichlorobenzamide (cas: 2670-38-4Formula: C7H5Cl2NO).

3,4-Dichlorobenzamide (cas: 2670-38-4) belongs to amides. In primary and secondary amides, the presence of N–H dipoles allows amides to function as H-bond donors as well. Thus amides can participate in hydrogen bonding with water and other protic solvents; the oxygen atom can accept hydrogen bonds from water and the N–H hydrogen atoms can donate H-bonds. Amides can be recrystallised from large quantities of water, ethanol, ethanol/ether, aqueous ethanol, chloroform/toluene, chloroform or acetic acid. The likely impurities are the parent acids or the alkyl esters from which they have been made. The former can be removed by thorough washing with aqueous ammonia followed by recrystallisation, whereas elimination of the latter is by trituration or recrystallisation from an organic solvent.Formula: C7H5Cl2NO

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics