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Asian Journal of Research in Chemistry
Year : 2020, Volume : 13, Issue : 2
First page : ( 123) Last page : ( 127)
Print ISSN : 0974-4169. Online ISSN : 0974-4150.
Article DOI : 10.5958/0974-4150.2020.00025.5

Synthesis, Characterization and Antibacterial Activity of O-Alkyl/O-Aryl trithiophosphate derivatives of Niobium (V)

Bhatti Suman1,2, Chaturvedi Alok2,*

1Department of Chemistry, Pt. N.R.S. Govt. College, Rohtak, Haryana

2Synthetic and Surface Science Laboratory Department of Chemistry, S. P. C. Govt. College, Ajmer, 305001, Rajasthan, India

*Corresponding Author E-mail: alok_chat.ajm@rediffmail.com

Online published on 7 April, 2020.

Abstract

Monochloro-niobium(V) bis-O-alkyl/O-aryl trithiophosphates, ClNb[ROP(S)SS]2 (where R = Me, Et, Pri, Bui, Ph, CH3-Ph) have been synthesized by the reaction of niobium pentachloride with O-alkyl/O-aryl trithiophosphoric acid in 1: 2 molar ratio, in refluxing ethanol. O-alkyl/O-aryl trithiophosphate derivatives of niobium (V) are pale yellow monomeric solids, soluble in co-ordinating solvents like DMSO, DMF and exhibit high sensitivity towards moisture. The newly synthesized derivatives have been characterized by elemental analysis, molecular weight measurement and spectroscopic (IR, 1H and 31P NMR) studies. On the basis of it is postulated that niobium is in penta-co-ordinated state and new derivatives show trigonal bipyramidal geometry. Two O-alkyl/O-aryl trithiophosphoric acid ligands are co-ordinated to niobium ion as a bidentate ligand chelating via two thiolate S atoms. Each of them forms a four-membered chelate ring.

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Keywords

Niobium(V)chloride, O-alkyl/O-aryl trithiophosphate, monomeric, trigonal bipyramidal geometry, antibacterial activity, gram positive and gram negative bacteria.

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