ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 30, Number 2
JKCSEZ 30(2)
April 20, 1986 

A new analytical reagent N-benzylisonitrosoacetylacetone imine (H-IAA-N-Bz) has been synthesized and identified its structure by IR, NMR and mass spectra. H-IAA-N-Bz forms a copper chloroform-soluble complex in a basic aqueous solution (pH = 7.0∼10.0). The other optimum conditions for the spectrophotometric study of the copper complex have been determined at 420nm. Beer's law is obeyed below the concentration of 64μg of copper per 10ml of chloroform. The composition of the copper complex has been found to be Cu(IAA-N-Bz)2 and the over-all stability constant is calculated to be 8.55 × 106. The molar absorption coefficient, ε of the Cu-(IAA-N-Bz)2 complex is 3500l/cm·mol.