188883-42-3

Basic information

• Product Name: 1,3,5-tris[(1H-pyrazol-1-yl)methyl]-2,4,6-triethylbenzene
• Synonyms: 1,3,5-tris[(1H-pyrazol-1-yl)methyl]-2,4,6-triethylbenzene
• CAS NO: 188883-42-3
• Molecular Weight: 402.542
• Mol File: 188883-42-3.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 1,3,5-tris[(1H-pyrazol-1-yl)methyl]-2,4,6-triethylbenzene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3,5-tris[(1H-pyrazol-1-yl)methyl]-2,4,6-triethylbenzene(188883-42-3)
• EPA Substance Registry System: 1,3,5-tris[(1H-pyrazol-1-yl)methyl]-2,4,6-triethylbenzene(188883-42-3)

Safety Data

• Hazardous Substances Data: 188883-42-3(Hazardous Substances Data)

Upstream product

• 288-13-1 NH-pyrazole 
• 181058-08-2 1,3,5-tris(bromomethyl)-2,4,6-triethylbenzene 

Relevant articles and documents

Self-assembly and X-ray structure of a ten-component, three-dimensional metallosupramolecular cage

Reaction of 1,3,5-tris(pyrazol-1-ylmethyl)-2,4,6-triethylbenzene 7 with palladium chloride results in the self-assembly of a three-dimensional cage; an X-ray crystal structure determination shows that the cage is comprised of an octahedral arrangement of

Tuning and dissecting electronic and steric effects in ammonium receptors: Nonactin vs artificial receptors

Ion selective electrodes (ISE) based on three different tripodal receptors (5, 6, and 7) have been investigated for sensing ammonium ion. Each receptor is based on three pyrazole groups that can accept three H-bonds from the bound ammonium ion. The receptor based on 4-bromo-3,5-dimethylpyrazole (6) is the most sensitive with a detection limit for ammonium ion of 2.5 × 10-5 M at pH 8. The detection limits for the receptors based on 2,3-dimethylpyrazole (5) and unsubstitued pyrazole (7) are 1.0 × 10-4 and 2.0 × 10-4 M, respectively. The selectivities of the receptors 5, 6, and 7 for sensing ammonium ion over potassium ion (logKNH4+/K+) are -2.8, -2.3, and -1.7, respectively. In contrast, the detection limit and the selectivity of a nonactin-based ISE are 2.2 × 10-5 M and -1.3, respectively. Crystallographic studies reveal that 6 accepts three H-bonds from the bound ammonium and singly protonated receptor 5 forms three H-bonds with the bound water molecule.