• Synthesis and structural studies on Ni(II) chloride complexes of N,N′-(substituted) formamidino-N′-(substituted) carbamides and thiocarbamides

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    • Keywords


      Nickel(II) chloride complexes; potentiometric oxidations; 3,5-diarylamino-1,2,4-thiadiazolidines; 3,5-diarylamino-1,2,4-diazolidines

    • Abstract


      Nicke(II) chloride reacts with N,N′-diarylformamidino-N′-arylcarbamides thiocarbamides and N-benzoylformamidino-N′-arylcarbamides, thiocarbamides forming complexes of the general formula [Ni (Ar.NH.C (NH) NH.C.X. NH.R)2] Cl2 (R=phenyl, orthotolyl and paratolyl; Ar=benzoyl; X=S,O) and [Ni (R.NH.C.X.NH.C (N.Ph.).NH.Ph.)2] Cl2 (R=phenyl, orthotolyl, paratolyl; Ph=phenyl; X=S, O). The ligands when oxidized with iodine undergo ring closure to related 3,5-diarylamino 1,2,4-thiadiazolidines and 3,5-diarylamino-1,2,4-diazolidines, while the complexes are not susceptible to oxidation. This confirms the binding in complexes is through sulphur and oxygen of the ligands.

    • Author Affiliations


      K L Madhok1

      1. Centre for Rural Development and Appropriate Technology, Indian Institute of Technology, Delhi Hauz Khas, New Delhi - 110 016, India
    • Dates

  • Journal of Chemical Sciences | News

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