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VOL. 10, ISSUE 3 (2026)
Comparative study of polynuclear copper (II) complexes of organophoshonic acids
Authors
Monika Singh, Vipin Kumar Singh, Priyanka Singh, Shishir kumar, R B Singh
Abstract
The Polynuclear
copper(II) derivatives of 1-hydroxyethylidenediphosphonic acid (HEDP),
1-aminoethylidenediphosphonic acid (AEDP, H4L), α-minobenzylidene diphosphonic
acid (ABDP, H4L), 1-amino-2-carboxyethane-1,1-diphosphonic acid (ACEDP, H5L),
1,3 diaminopropane-1,1,3,3-tetra-phosphonic acid (DAPTP, H8L),
Ethylenediamine-N,N’-bis (dimethyl-methylenephosphonic) acid (EDBDMPO, H4L),
o-phenylene-diamine-N,N’-bis (dimethylmethylenephosphonic) acid (PDBDMPO, H4L),
diethylene triamine –N,N,N’,N’,N’’N”-penta (methylene phosphonic) acid
(DETAPMPO, H10L) and diethylene triamine –N,N’’-bis (dimethyl methylene
phosphonic) acid (DETBDMPO, H4L) have been prepared in aqueous medium. The
general formula of derivatives from elemental analysis was found to be Cu2L.XH2O
(in case of AEDP, ABDP, EDBDMPO, PDBDMPO, DETBDMPO), Cu5L2.XH2O
(in case of ACEDP) Cu4L.XH2O, Cu2 H4L.
XH2O (in case of DAPTP) and Cu5L.XH2O (in case
of DETAPMPO). The electronic spectra have shown them to be six coordinated with
slight distortion from octahedral geometry. Antiferromagnetism was inferred
from magnetic moment data. Infrared spectral studies were carried out to
determine coordination sites. EPR (Electron Paramagnetic Resonance) spectra
that supports the presence of tetragonal distortion and antiferromagnetic
behaviour, have also been studied.
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Pages:19-24
How to cite this article:
Monika Singh, Vipin Kumar Singh, Priyanka Singh, Shishir kumar, R B Singh "Comparative study of polynuclear copper (II) complexes of organophoshonic acids". International Journal of Chemical Science, Vol 10, Issue 3, 2026, Pages 19-24
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