Catechol → Hafnium Catecholate

Participants

Reaction Conditions

Reaction Steps

A solution of catechol (2.34 g, 2.12 mmol) and toluene (26 ml) was dehydrated by distilling 5 mL of the solution. Thereafter, 5.00 g (10.6 mmol) of hafnium(IV) butoxide was added to the solution while stirring. The mixed solution was refluxed for 1 hour, and then, while the distillation temperature was 100° C. or higher, distilled until the amount of the solution became half. After the distillation, solid content of the product was isolated by suction filtering using a membrane suction filter. The residual solid content was heated to 100° C. under vacuum using a vacuum dryer so that remaining volatile components were completely removed. The solid content (catechol-hafnium complex) was black in color. The yield amount was 4.18 g (10.6 mmol), and the yield percentage was 100%. Catechol-hafnium complex was dissolved into acetylacetone until saturated, and then filtered to be used as a coating liquid.

Provenance & Evidence