Stability Constants of N-Ethoxycarbonyl-N-[3-(p-anisyl)- pyrazol-5-yl]thiourea Complexes with some Transition Metal Ions. Synthesis and Characterisation of Copper(II) and Cobalt(II) Complexes
| Main Authors: | MOHAMED K.A IBRAHIM, ATKAR K.ABDEL-HADI, FAIZA M DARWISH |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 1993
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6120206 |
Daftar Isi:
- Chemistry Department, Facuity ot Science, Cairo University, Giza, Egypt Manuscript received 17 March 1989, revised 5 January 1993, accepted 19January 1993 The formation constants of N-ethoxycarbonyl-N-[3-(p-anisyl)-I-phenylpyrazol-5-yI[thitourea (3) and N-ethoxycarbonyl- N-[3-(p-anisyl)pyrazol-5-yl]thiourea (4) with 3d-transition metals (CuII,NiII,CoII,MnII and ZnII) have been determined in 70% (v/v) ethanol-water medium. The Formation constants both K1 and K2 follow the order : MnII < NiII < CoII < CuII <ZnII. Complexes of CuII and CoII ull and with legends have been characterised by analytical, electrical conductivity, magnetic, ir and uv spectral data. The ligands from biscomplexes ML2, where L is uninegatively charged and the binding sites are oxygen and sulphur atoms.