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New azamacrocylic complexes of divalent transition metal ions were synthesized by taking Eu(III) and Tb(III), metal ions as templates. The macrocyclic ligand L1[(12,18,32,38-tetraoxo-1,3,5,7,17,19,21,23-octahydrotetrabenzo[b,f,r,v][1,9,17,25]tetra azacyclo [bis-N1,N7-bis(3-hydroxyphenyl)heptanediamide] and L2[(5E,8E,14E,17E)-2,11-dibromo-6,8,15,17-tetramethyl-7,16-dihydrodipyrido [2,3–2’,3’][1,4,8,11] tetraazacyclotetra-decine] derived from 3, 5- Diaminophenyl ether with Pimelic acid and Naphthalene 2,3- diamine with Propane 1,3- dione respectively. Spectroscopic, physical, and analytical characterization of synthesized Ligand and metal macrocyclic complexes was done using UV-visible, infra-red (IR), electron spin resonance (ESR), thermogravimetric analysis (TGA), magnetic susceptibilities, and carbon hydrogen nitrogen (CHN) content analysis. The non electrolytic behavior study was based on molar conductance values. The magnetic moments values give a prediction regarding the presence of unpaired electron. Newly synthesized complexes having a distorted octahedral geometry may be proposed. Biological activity tested with these metal complexes. Result found that two macrocyclic complexes show anti TB activity against the bacterial spp. mycobacterium tuberculosis. Biological activity perform in “In-vitro” mode.

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Green Synthesis and Structural Characterization of Lanthanide Metal Macrocyclic Tetraaza Complexes for Their Anti Tuberculosis Activity

  • 会议论文

  • 发表日期：

    2025年

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  • Nutan Sharma,
  • Naveen Kuamr Yadav,
  • Deepak Kuamr,
  • Ankit Kumar Vishwakarma

摘要

New azamacrocylic complexes of divalent transition metal ions were synthesized by taking Eu(III) and Tb(III), metal ions as templates. The macrocyclic ligand L1[(12,18,32,38-tetraoxo-1,3,5,7,17,19,21,23-octahydrotetrabenzo[b,f,r,v][1,9,17,25]tetra azacyclo [bis-N1,N7-bis(3-hydroxyphenyl)heptanediamide] and L2[(5E,8E,14E,17E)-2,11-dibromo-6,8,15,17-tetramethyl-7,16-dihydrodipyrido [2,3–2’,3’][1,4,8,11] tetraazacyclotetra-decine] derived from 3, 5- Diaminophenyl ether with Pimelic acid and Naphthalene 2,3- diamine with Propane 1,3- dione respectively. Spectroscopic, physical, and analytical characterization of synthesized Ligand and metal macrocyclic complexes was done using UV-visible, infra-red (IR), electron spin resonance (ESR), thermogravimetric analysis (TGA), magnetic susceptibilities, and carbon hydrogen nitrogen (CHN) content analysis. The non electrolytic behavior study was based on molar conductance values. The magnetic moments values give a prediction regarding the presence of unpaired electron. Newly synthesized complexes having a distorted octahedral geometry may be proposed. Biological activity tested with these metal complexes. Result found that two macrocyclic complexes show anti TB activity against the bacterial spp. mycobacterium tuberculosis. Biological activity perform in “In-vitro” mode.