Design, Synthesis and Structural Aspects of NH₂(CH₂)_nE(CH₂)_nNH₂ (n=2 or 3; E=Se or Te) N₂Se or N₂Te Donors and its Complexes with Group 12 Metals

Abstract

Reaction of group 12 metal chlorides with dialkylchalcogeno diamine [{NH₂(CH₂)_nE(CH₂)_nNH₂} (n=2 or 3 and E=Se and Te)] afforded the complexes [M₂{NH₂(CH₂)_nE(CH₂)_nNH2)}₂Cl₄] (M=Zn, Cd and Hg) and with CdI₂ [Cd{NH₂(CH₂)_nE(CH₂)_nNH₂)}₂] [Cdl₄]. Complexes were characterized by elemental analyses, IR, ¹H, ¹³C NMR, FAB mass and by single crystal X-ray structure determinations. In all the complexes, the ligand acts as a neutral tridentate (N, Se, N or N, Te, N) donor. Thermal analyses for the complexes were also performed by thermogravimetry.

Key Words:

• (N, Se, N) and (N, Te, N) donors
• Zn(II)
• Cd(I1) & Hg(II) complexes
• Octahedral
• X-ray structure
• TG analysis