I found the field of Chemistry; Crystallography very interesting. Saw the article Complexes of palladium(II) chloride with 3-(pyrazol-1-yl)propanamide (PPA) and related ligands published in 2019.0. SDS of cas: 67-51-6, Reprint Addresses Amenta, DS; Gilje, JW (corresponding author), James Madison Univ, Dept Chem & Biochem, MSC 4501, Harrisonburg, VA 22807 USA.; Edelmann, FT (corresponding author), Otto von Guericke Univ, Chem Inst, Univ Pl 2, D-39106 Magdeburg, Germany.. The CAS is 67-51-6. Through research, I have a further understanding and discovery of 3,5-Dimethyl-1H-pyrazole
Four new derivatives of the versatile polyfunctional ligands 3-(pyrazol-1-yl)propanamide (1, = PPA) and 3-(3,5-dimethylpyrazol-1-yl)-propanamide (2, = Me(2)PPA) have been prepared, in which one of the amide hydrogens on 1 and 2 is formally replaced by alkyl residues. X-Ray diffraction studies revealed that, in contrast to 1 and 2, the N-isopropyl substituted derivatives 3 and 4 form supramolecular hydrogen-bonded chains rather than two-dimensional arrays, and the N-(2-methyl-4-oxypentan-2-yl) (=MOP) substituted compounds 5 and 6 exist as cyclic dimers in the solid state. Reactions of PdCl2(COD) (COD = 1,5-cyclooctadiene) with 2 equiv. of the corresponding ligands 1-6 in all cases afforded trans-PdCl2(L)(2) complexes (7-12). X-ray crystal structure determinations of 8, and 10-12 revealed kappa N-monodentate coordination of the PPA-type ligands. (C) 2019 Elsevier Ltd. All rights reserved.
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Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics