SYNTHESIS AND STRUCTURAL ELUCIDATION OF SOME NEW PHENYLARSENIC(III) DERIVATIVES OF N(-SUBSTITUTED) S-BENZYL DITHIOCARBAZATES

Abstract

Some new phenyl arsenic(III) derivatives of N(-substituted) S-benzyldithiocarbazate with the general formula PhAsCl_2-n [(X-C₆H₄)C(R)NNC(S)SCH₂C₆H₅]_n where n = 1 or 2; R = H, x = o-OH; R = CH₃; x = p- OCH3, p-OH, p- Br, p- F, p- Cl have been synthesised by the reactions of phenylarsenic(III) dichloride with the sodium salt of the corresponding ligand in 1:1 and 1:2 molar ratios in refluxing benzene solution. All these compounds have been characterised by elemental analysis and molecular weight measurements and their plausible structure have been proposed on the basis of spectroscopic evidences. The compounds PhAs[X-C₅H₄)C(R)NNC(S)SCH₂C₆H₅]₂ appears to have distorted octahedral geometry whereas the compounds PhASCl[(X-C₆H₄)C(R)NNC(S)SCH₂C₆H₅) with trigonal bipyramidal geometry exist in two isomeric forms.

Key Words:

• Benzyl Dithiocarbazates
• phenylarsenic derivatives
• NMR spectra