Recently I am researching about PROTON-TRANSFER COMPOUNDS; SOLID-STATE LANDSCAPE; CRYSTAL-STRUCTURE; STRUCTURAL-CHARACTERIZATION; PHARMACEUTICAL COCRYSTALS; MOLECULAR-STRUCTURE; ORGANIC SALTS; SOLUBILITY; SYNTHON; ARCHITECTURES, Saw an article supported by the Zhejiang Provincial Natural Science Foundation of ChinaNatural Science Foundation of Zhejiang Province [LY14B010006]; Open Foundation of Key Laboratory of Chemical Utilization of Forestry Biomass of Zhejiang Province, Zhejiang A F University [2015CUFB02]; Jiyang 533 project. Recommanded Product: 50-84-0. Published in ELSEVIER in AMSTERDAM ,Authors: Chen, B; Lin, ZH; Wu, RH; Jin, SW; Dong, LF; Bai, LQ; Xu, WQ; Wang, DQ. The CAS is 50-84-0. Through research, I have a further understanding and discovery of 2,4-Dichlorobenzoic acid
Cocrystallization of the widely available 4-dimethylaminopyridine, with a series of carboxylic acids gave nine molecular adducts 4-dimethylaminopyridinium trifluoroacetate (1) , 4-dimethylaminopyridinium glycolate glycolic acid (2) , 4-dimethylaminopyridinium 2-furoate dihydrate (3) , tri(4-dimethylaminopyridinium) tri(o-chlorobenzoate) tetrahydrate (4) , 4-dimethylaminopyridinium 4-bromobenzoate 4-bromobenzoic acid (5) , 4-dimethylaminopyridinium 4-formylbenzoate 4-formylbenzoic acid (6) , 4-dimethylaminopyridinium 2,4-dichlorobenzoate (7) , 4-dimethylaminopyridinium 2-aminobenzoate 2-aminobenzoic acid (8) and bis(4-dimethylaminopyridinium) 5-nitroisophthalate 5-nitroisophthalic acid methanol solvate (9) . The nine adducts have been characterised by X-ray diffraction, IR and elemental analysis, the melting points were also reported. Their structural and supramolecular aspects are fully analyzed. The result reveals that among the nine investigated crystals only the ring Ns in the 4-dimethylaminopyridine moieties are protonated when the carboxylic acids are deprotonated. The crystal packing is interpreted by the strong charge-assisted N-H center dot center dot center dot O hydrogen bond between the NH+ and the deprotonated acidic groups. Except the N-H center dot center dot center dot O hydrogen bonds, the charge assisted or neutral O-H center dot center dot center dot O hydrogen bonds were also found at 2-6, 8 and 9 . The COOH center dot center dot center dot COO- synthon has been at 2, 5-6 and 8-9. Further analysis of the crystal packing indicated that a different family of additional CH-O/CH2-O/CH3-O, F-F, Br-Br, CH-Cl, CH3-Cl, CH-pi/CH3-pi, C-H center dot center dot center dot C-pi, C-pi, Cl-O, O-C, O-pi and pi-pi contacts contribute to the stabilization and expansion of the total high-dimensional (2D-3D) framework structures. For the synergism of the various nonbonding contacts there created homo/hetero supramolecular synthons or both. (C) 2021 Elsevier B.V. All rights reserved.
About 2,4-Dichlorobenzoic acid, If you have any questions, you can contact Chen, B; Lin, ZH; Wu, RH; Jin, SW; Dong, LF; Bai, LQ; Xu, WQ; Wang, DQ or concate me.. Quality Control of 2,4-Dichlorobenzoic acid
Reference:
Chloride – Wikipedia,
,Chlorides – an overview | ScienceDirect Topics