Tris(pyrazolyl)borate Copper Hydroxide Complexes Featuring Tunable Intramolecular H-Bonding was written by Gardner, Evan J.;Cobb, Caitlyn R.;Bertke, Jeffery A.;Warren, Timothy H.. And the article was included in Inorganic Chemistry in 2019.Product Details of 19959-77-4 This article mentions the following:
A modular synthesis provides access to new tris(pyrazolyl)borate ligands XpyMeTpK that possess a single functionalized pendant pyridyl (py) or pyrimidyl (pyd) arm designed to engage in tunable intramol. H-bonding to metal-bound functionalities. To illustrate such H-bonding interactions, [XpyMeTpCu]2(娓?OH)2 (6a–6e) complexes were synthesized from the corresponding XpyMeTpCu-OAc (5a–5e) complexes. Single crystal x-ray structures of three new dinuclear [XpyMeTpCu]2(娓?OH)2 complexes reveal H-bonding between the pendant heterocycle and bridging hydroxide ligands while the donor arm engages the Cu center in an unusual monomeric DMAPMeTpCu-OH complex. Vibrational studies (IR) of each bridging hydroxide complex reveal reduced 璋?sub>OH frequencies that tracks with the H-bond accepting ability of the pendant arm. Reversible protonation studies that interconvert [XpyMeTpCu]2(娓?OH)2 and [XpyMeTpCu(OH2)]OTf species indicate that the acidity of the corresponding aquo ligand decreases with increasing H-bond accepting ability of the pendant arm. In the experiment, the researchers used many compounds, for example, 2-(5-Methyl-1H-pyrazol-3-yl)pyridine (cas: 19959-77-4Product Details of 19959-77-4).
2-(5-Methyl-1H-pyrazol-3-yl)pyridine (cas: 19959-77-4) belongs to pyrazole derivatives. The strategies for the synthesis of pyrazoles generally can be applied for the construction of indazoles. Pyrazoles can be selectively lithiated at different carbons and subsequently react with electrophiles depending on the substitution patterns.Product Details of 19959-77-4
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics