Synthesis,spectral characterization,DFT studies and biological activity of novel Ligand 1‐(2‐cyclohexyl thioethyl) piperidine and its complexes with group 12 metal chlorides |
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| Authors: | Muzzaffar A Bhat Shabir H Lone Muzzaffar A Mir Sheikh A Majid Sanjay K Srivastava |
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| Institution: | 1. School of Studies in Chemistry, Jiwaji University, Gwalior, India;2. Department of Chemistry, Islamic University of Science and Technology, Awantipora, Kashmir, India;3. Department of Chemistry, Govt Degree College Anantnag, Kashmir, India |
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| Abstract: | C6H11S‐Na+ (generated insitu by reaction of NaOH with C6H11SH) on treatment with 1‐(2‐chloroethyl) piperidine hydrochloride under N2 atmosphere resulted in (1‐(2‐cyclohexyl thioethyl) piperidine) ( L 1 ) as orange solid. It's complexes having the formula ZnCl2. L1] ( 1 ), CdCl2. (L1)] ( 2 ) and HgCl2. L1] ( 3 ) have been prepared. L 1 and its complexes 1‐3 were characterized on the basis of physico‐chemical and spectral (FT‐IR, Mass, 1H, 13C and DEPT 135o NMR) studies. Powder XRD diffraction pattern reveals the crystalline nature of L1 and complex 1 . Complexes 1‐3 adopt distorted tetrahedral geometry showing bidentate mode of coordination through S and N. Using DFT‐based optimization of structures, the HOMO‐LUMO energy gaps and molecular electrostatic potential maps (EPM) of compound L1 and complexes 1‐ 3 were theoretically calculated at the B3LYP/6‐311G (d, p) level of theory. HOMO‐LUMO energy gap was calculated which allowed the calculation of relative properties like chemical hardness, chemical inertness, chemical potential, nucleophilicity and electrophillicity index of the synthesized products. The experimentally obtained IR and NMR results showed a good correlation with those of the theoretical ones. Ligand L 1 and complexes 1‐3 display significant antibacterial and antifungal activity. |
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| Keywords: | Antibacterial antifungal bidentate density functional theory piperidine |
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