O.P. Gupta Int. Journal of Engineering Research and Applications www.ijera.com ISSN: 2248-9622, Vol. 6, Issue 2, (Part - 5) February 2016, pp.29-31 www.ijera.com 29|Page Alkali Metal Complexes: Mixed Ligand Complexes of Some Alkali Metal Salts of Some Organic Acids with Isonitroso-P- Methylace to phenone O.P. Gupta* (H.O.D) And Avinash Kumar MJK COLLEGE, BETTIAH Department. Of chemistry BRA Bihar University, Muzaffarpur Abstract A number of mixed ligand complexes of alkali metal salts of o-nitrophenol,2,4-dinitrophenol, 2,4,6,- trinitrophenol, 1-nitroso-2- naphthol and 8- hydroxyquinoline with Insoniroso–p methylacetopheone have been synthesized in absolute ethanol & characterized by elemental analysis and I .B. spectral data. Their I.R spectral data indicate the presence of hydrogen bonding in them, which many be one of the dominant factors of their stability. Further appreciable shift in 1650 cm -1 band (possibly vC=O) and 1600 cm -1 band (possibly vC=N)Suggests their coordination behavior in these mixed ligand complexes The reactions that take place in natural systems are highly specific and selective. Alkali metal ions actively participate in most of the reaction occurring in the biological systems, which are dominated by mixed ligand complexes. Studies of such mixed ligand complexes of alkali metals can threw light in understanding the role and mechanism of selective absorption of alkali metals ions by plants Coordinating ability of alkali metal with isonitrosoacetophenone 1-2 and transition metals with isonitrosoacetophenone 3 and isonitroso-p-methylacetophenone 4 have been reported earlier. In the present paper we report the mixed ligand complexes of alkali metal salts having the general formula ML.HL, ‘ where M=Li, Na & K and L=deprotonated o- nitrophenol, 2,4 dinitrophenol, 2, 4, 6- trinitrophenol, 1-nitroso-2-naphthol or 8- hydroxquinoline; HL’= p - MeHINAP (isonitroso-p-methylacetophenone). I. EXPERIMENT AL Preparation of p-Me HINAP The ligand ML’ was prepared by the method V.Pechmann and Muller 5 . Preparation of the complexes To a suspension of alkali metal salts(ML)in absolute ethanol, the ligand(HL’)was added (1:1 mole ratio) and the reaction mixture was heated under reflux with stirring for half an hour when a uniform solution was obtained. The contents were slightly concentrated and cooled when the colored adducts got separated. The separated adduct was filtered, washed ethanol and dried at 80 0 C in an electric oven. II. RESULTS AND DISCUTION The complexes of these ligands with alkali metal salts are characteristically colored.The Colors, the decomposition/transition temperatures as well as analytical data of these Complexes are listed in table 1. Table-1 Compound Colour M.p./ Decom/tran s temp (c) %Found (%)calculated C H N M C H N M P-MeHINAP Li(ONP)p- MeHINAP Na(ONP)p- MeHINAP K(ONP)p- MeHINAP Light cream Pale yellow Yellowish green Pale pinkish yellow 98-99 M 220 d 284 d 300 d 66.28 57.88 56.80 53.25 5.55 4.20 4,20 3.85 8.58 8.98 8.78 8.28 2.33 7.06 11.4 4 66.26 58.44 55.56 52.94 5.52 4.22 4.04 3.82 8.58 9.09 8.64 8.24 2.77 7.09 11.47 Li(DNP)p- MeHINAP Na(DNP)P- MeHINAP Light yellow Bright yellow 132.d 150.d 230.m 51.06 48.60 44.98 3.42 3.27 3.15 11.95 11.35 10.88 1.63 6.26 10.2 1 50.99 48.78 47.75 3.39 3.25 3.12 11.89 1138 10 91 1.98 6.23 10.13 RESEARCH ARTICLE OPEN ACCESS