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THE SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF
THE NEW DITHIOPHOSPHINIC ACID Ni(II) COMPLEX
Hakan Dal,a Ertuğrul Gazi Sağlam,b Berline Mougang-Soumé,c Tuncer Hökelekd
a
Department of Chemistry, Anadolu University,26470 Yenibağlar, Eskişehir, Turkey
b
Department of Chemistry, Bozok University, 66900, Yozgat, Turkey
c
Department of Chemistry, Université de Montréal, Montréal, Québec, Canada
d
Department of Physics, Hacettepe University,06800 Beytepe, Ankara, Turkey
[email protected]
Organodithiophosphinic acids have a highly selective complexing tendency towards soft acid
type metal cations [1]. Reducing ability of DTPAs make them a suitable antioxiditive additive
for lubricating oils [2]. These acids have also been found to be efficient pesticides [3]. Their
antibacterial and antifungal activities make them potential curing agents in the treatment of some
chronic lung disease [4]. Some DTPA have succesfully been used as a synergistic additive to
cephalosporin-type antibiotics [5]. In recent years, they have been reported to be used as potential
extracting agents for various metals in lanthanide and actinite samples [6].
In this study, DTPA ligands were prepared through the reaction of Lawesson Reagent (LR) and
Grignard compounds. Acid so obtained was treated directly with Nickel (II) salt, and the complex
([Ni(L)2] was found to be crystalizable in acid media. The structure of the compound was
elucidated by elemental analysis, 1H-,13C{1H}-, 31P{1H}- NMR; and also by MS-, FTIR- and
RAMAN spectroscopies. The solid state structure of the novel nickel complex was characterized
by X-ray crystallography. We gratefully acknowledge the financial assistance of Technical
Research Council of Turkey (grant nos. TBAG 114Z091).
Figure 1. An ORTEP-3 view of [Ni(L1)2]. The thermal ellipsoids are drawn at the 50% probability level.
References
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