Synthesis and Spectroscopic Studies of 14-Membered Dithiadiaza Macrocyclic Complexes of Transition Metal Ions

• Autorzy: Khan T. A. , Naseem S.
• Języki publikacji: EN

Abstrakty

EN

A new series of 14-membered macrocyclic complexes containing nitrogen and sulfur donor atoms have been synthesized by metal template condensation reactions of 1,2-ethane -dithiol, omikron-bromoaniline and succinic or phthalic acid in 1:2:1 molar ratio in metha nol. The proposed stoichiometry and the bonding of the macrocyclic moiety to metal ions along with the over all stereochemistry have been derived from the results of elemental analyses, magnetic susceptibility, conductivity data and the spectral data revealed from FT-IR, 1H NMR, UV-visible and EPR spectral studies. The molar conductance measurements of the complexes in DMSO correspond to be none-electrolyte nature for Co(II) and Zn(II) while 1:2 electrolyte for Ni(II) and Cu(II) complexes. Thus, these complexes may be formulated as [ML1X2] and [ML2X2] (M = Co(II), or Zn(II); X = Cl or NO3), and [ML1]X2 and [ML2]X2 (M = Ni(II) or Cu(II); X = Cl or NO3). On the basis of IR, electronic and EPR spectral studies an octahedral geometry has been as signed for Co(II) and Zn(II) complexes while square-planarfor Ni(II) and Cu(II) complexes.

Słowa kluczowe

EN

dithiadiaza macrocyclic complexes; octahedral complexes; template synthesis

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2009
• Tom: Vol. 83, nr 11
• Strony: 1885--1892
• Opis fizyczny: Bibliogr. 36 poz., rys.

Twórcy

autor

Khan T. A.

autor

Naseem S.

• Division of Inorganic Chemistry, Department of Chemistry, Aligarh Mus lim Uni ver sity, Aligarh – 202002, India,

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