57473-97-9

Basic information

• Product Name: (C₆H₅)B(OH)CH₂(COO)2^(1-)
• CAS NO: 57473-97-9
• Molecular Weight: 206.971
• Mol File: 57473-97-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (C₆H₅)B(OH)CH₂(COO)2^(1-)(CAS DataBase Reference)
• NIST Chemistry Reference: (C₆H₅)B(OH)CH₂(COO)2^(1-)(57473-97-9)
• EPA Substance Registry System: (C₆H₅)B(OH)CH₂(COO)2^(1-)(57473-97-9)

Safety Data

• Hazardous Substances Data: 57473-97-9(Hazardous Substances Data)

Upstream product

• 156-80-9 malonate 
• 98-80-6 phenylboronic acid 
• 141-82-2 malonic acid 

Relevant articles and documents

Dynamics of boron acid complexation reactions. Formation of 1:1 boron acid-ligand complexes

Boron acids form 1:1 complexes with a variety of bidentate chelating ligands according to the equation RB(OH)2 + H2L ? RB(OH)L- + H3O+. Four boron acids (m-NO2PhB(OH)2, PhB(OH)2, B(OH)3, CH3B(OH)2) have been studied. Ten different ligands have been examined. Stability constants for the reactions were determined by pH titration methods, and the kinetics were done by temperature jump at μ = 0.1 M (KNO3) and 25°C. The stability constants are affected by the acidities of both the boron acid and ligand. The stability constants increase as the ligand and boron acid become more acidic. Various kinetic pathways are possible. Trigonal boron acids, RB(OH)2, can react with either fully protonated ligands or ligand anions. The pattern of reactivity is different for each case. The rate constants for the reactions of fully protonated ligands vary systematically with both ligand acidity and boron substituent. This is discussed in terms of a mechanism which involves proton transfer. The ligand anions do not display a simple correlation with any single ligand parameter, and their reactivities are discussed in terms of a number of ligand-specific effects. Borate anions, RB(OH)3-, react with high rate constants with fully protonated ligands and with somewhat lower rate constants with ligand anions. Possible reasons for this are discussed.