Ni(II) complexes of dithiophosphonic acids

Journal of Chemical Sciences

Afshin Saadat²  Khodayar Gholivand4³  Patrick McArdle⁴  Ali Asghar Ebrahimi Valmoozi³  Karim Zare²  Alireza Banaee¹ 

[1] Department of Chemistry, Payame Noor University, P.O. Box 56199-14814, Tehran, Iran$$;Department of Chemistry, Science and Research Branch, Islamic Azad University, P.O. Box 14515-775, Tehran, Iran$$;Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran$$;Department of Chemistry, NUI Galway, P.O. Box 2386, Galway, Ireland$$

关键词: Dithiophosphonic acid;    Ni(II) complexes;    crystal structures;    isobutanol;    cyclohexylamine;    anti-bacterial activity.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

The reaction of 2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide (Lawesson reagent) with isobutanol, cyclohexylamine and phenylethylamine produced (4-methoxy-phenyl)-phosphonodithioic acid o-isobutyl ester HS2P(p-C6H4OMe) (OCH2CH(CH3)2) (I), [S2P(C6H11NH)(p-C6H4OMe) H3N+C6H11] (II) and [S2P(phCH2CH2NH) (p-C6H4OMe)H3N+CH2CH2ph] (III), respectively. The reaction of alcohol with Lawesson reagent produced neutral product (I) while that with amines led to an ion pair (II, III). Furthermore, reaction of I, II and III with NiCl2.6H2O in methanol produced novel complexes: IV, V and VI. The compounds were characterized by 1H, 13C and 31P NMR, IR spectroscopy and elemental analysis. The single crystal X-ray structures of IV and V showed that the nickel complexes are square planar. Compound V formed a three-dimensional supramolecular structure via intermolecular P-O…H-N hydrogen bonds. The Xray crystallography of V showed that those three hydrogens of +NH3 cation produced three hydrogen bonds with different distances. The new compounds were additionally tested in view of their anti-bacterial properties. The ligands containing amine substituents exhibited more activity toward tested bacteria than their alcohol substituents, while the Ni(II) complexes including alcohol substituents exhibited high potential.

【 授权许可】

Unknown