The synthesis of twenty three complexes of cobalt(III), nickel(II), palladium(II), platinum(II), copper(II) and zinc(II) having three novel monothio-#x3B2;-diketones, RC(SH)#x2ED;CHCOCF3, (R #x2ED; 3#x2032;-fluorophenyl, 4#x2032;-propylphenyl and 2#x2032;,4#x2032;,5#x2032;-triethoxyphenyl) and the known ligand with R as 2#x2032;-furyl is reported. Their dipole moments were determined in benzene solution at 25#xB0;C by static-polarization measurement. The dipole moment data of the four-coordinate nickel, palladium and platinum chelates clearly indicates acis-square planar configuration.1H and19F NMR spectral data confirm the facial configuration of the six-coordinate cobalt(III) complexes. The four-coordinate zinc complexes have a tetrahedral structure and the copper complexes are believed to have a distortedcis-square planar structure.
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