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Journal articles on the topic 'Macrocyclic Schiff base'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Lodeiro, Carlos, Rufina Bastida, Emilia Bértolo, and Adolfo Rodríguez. "A new family of NxOy pyridine-containing macrocycles: Synthesis and characterization of their Y(III), Ln(III), Zn(II), and Cd(II) coordination compounds." Canadian Journal of Chemistry 82, no. 3 (2004): 437–47. http://dx.doi.org/10.1139/v03-214.

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Reaction between 2,6-bis(2-formylphenoxymethyl)pyridine and N,N-bis(3-aminopropyl)methylamine or tris(2-aminoethyl)amine has been used as the starting point for the synthesis of seven oxa-aza macrocyclic ligands, five of them never reported previously. They all feature different pendant arms, which provide a wide range of coordination possibilities. The Schiff base macrocycles L1 and L4 and their reduced ligands L2 and L5 are derived from 2,6-bis(2-formylphenoxymethyl)pyridine and tris(2-aminoethyl)amine or N,N-bis(3-aminopropyl)methylamine, respectively. The reaction of L1 with salicylaldehyd

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2

Rajak, Ashish, Arpit Srivastava, Gyanendra Kumar Bharati, Subhash Chandra Shrivastava, and Shekhar Srivastava. "Synthesis and characterization of Ru (II) complexes with macrocyclic ligands." Research Journal of Chemistry and Environment 26, no. 8 (2022): 153–64. http://dx.doi.org/10.25303/2608rjce1530164.

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Ten complexes of the type [RuCl2(L1-10)] (where L= macrocyclic Schiff base ligands) have been synthesized by reaction of [RuCl2(DMSO)4] with ten macrocyclic Schiff base ligands. These complexes were characterized by elemental analysis, molar conductance; UV-Visible spectra, IR, magnetic movement and X-ray photoelectron spectra (XPS). An octahedral geometry was established for all these complexes.

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3

Fenton, Ronald R., Leonard F. Lindoy, Jason R. Price, Brian W. Skelton, and Allan H. White. "New Macrocyclic Ligands. XVI. Synthesis of a Series of N-Benzylated Macrocycles Incorporating N4O2-Donor Set." Australian Journal of Chemistry 56, no. 11 (2003): 1141. http://dx.doi.org/10.1071/ch03079.

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The synthesis of five 20-membered, N-benzylated macrocyclic ligands incorporating N4O2-donor sets and from one to three benzyl substituents for use in metal-ion recognition studies is described. The new derivatives were obtained by both benzylation of the pre-formed parent macrocycle using benzyl chloride in acetonitrile in the presence of base or, in one case, by performing macrocyclic ring closure using the appropriate N-benzylated triamine precursor by means of a bis-Schiff base condensation with the corresponding dialdehyde, followed by in situ reduction of the diamine linkages so formed.

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4

Atkins, Andrew J., Daniel Black, Alexander J. Blake, et al. "Schiff-base compartmental macrocyclic complexes." Chem. Commun., no. 4 (1996): 457–64. http://dx.doi.org/10.1039/cc9960000457.

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5

Yu, Qing, Xiaodong Zhang, Shou-Ting Wu, et al. "Twisted Schiff-base macrocycle showing excited-state intramolecular proton-transfer (ESIPT): assembly and sensing properties." Chemical Communications 56, no. 15 (2020): 2304–7. http://dx.doi.org/10.1039/c9cc09540c.

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6

Zhang, Kun, Jiao Geng, Chao Jin та Wei Huang. "Distinguishable Zn(ii) and Pb(ii) template effects on forming pendant-armed Schiff-base macrocyclic complexes including a remarkable Pb(ii)–π macrocyclic complex". Dalton Trans. 43, № 41 (2014): 15351–58. http://dx.doi.org/10.1039/c4dt01927j.

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36-Membered [2 + 2] dinuclear Zn(ii) and 18-membered [1 + 1] mononuclear Pb(ii) Schiff-base macrocyclic complexes have been described, including a unique intramolecular η<sup>3</sup>-coordinated Pb(ii)–π macrocyclic complex obtained under ambient conditions.

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7

Cuesta, Luciano, Vincent M. Lynch та Jonathan L. Sessler. "Syntheses and structural studies of η5-pentamethylcyclopentadienyl rhodium(III) and iridium(III) complexes of a Schiff-base expanded porphyrin". Journal of Porphyrins and Phthalocyanines 14, № 01 (2010): 41–46. http://dx.doi.org/10.1142/s1088424610001738.

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Reported here is the synthesis of new binuclear rhodium(III) and iridium(III) semi-sandwich complexes of a Schiff-base expanded porphyrin. Single crystals of these new complexes were subject to X-ray diffraction analysis. The resulting structures revealed that the Schiff-base macrocycle adopts a V-shape in which two {(η5- C 5 Me 5) MCl } ( M = Rh and Ir ) fragments are accommodated within the macrocyclic pocket. The coordination environment of the metal centers is typical to that of "piano stool"-type complexes. The X-ray analyses and complementary NMR studies (carried out in CD 2 Cl 2) provid

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8

Böhme, Uwe, Anke Schwarzer, and Betty Günther. "Formation of a macrocycle from dichlorodimethylsilane and a pyridoxalimine Schiff base ligand." Acta Crystallographica Section E Crystallographic Communications 77, no. 11 (2021): 1099–102. http://dx.doi.org/10.1107/s2056989021010185.

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The reaction of dichlorodimethylsilane with a polydentate Schiff base ligand derived from pyridoxal and 2-ethanolamine yielded the macrocyclic silicon compound (8E,22E)-4,4,12,18,18,26-hexamethyl-3,5,17,19-tetraoxa-8,13,22,27-tetraaza-4,18-disilatricyclo[22.4.0.010,15]octacosa-1(24),8,10,12,14,22,25,27-octaene-11,25-diol, C24H36N4O6Si2. The asymmetric unit contains the half macrocycle with an intramolecular O—H...N hydrogen bond between the imine nitrogen atom and a neighbouring oxygen atom. The crystal structure is dominated by C—H...O and C—H...π interactions, which form a high ordered molec

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9

Khan, Shamshad Ahmad, Kamlesh Kumar Singh, and Jahan Ara Khatoon. "Synthesis, characterization and microbiological screening of some transition metal complexes with nitrogen containing macrocyclic ligand." Research Journal of Chemistry and Environment 27, no. 2 (2023): 30–34. http://dx.doi.org/10.25303/2702rjce030034.

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A novel macrocyclic Schiff base ligand 1,4,8,11-tetraaza-2,3,9,10-tetramethyl cyclotetradeca-1,3,8,10-tetraene was synthesized by condensation between butane-2,3-dione and propane-1,3-diamine in an alcoholic medium. The complexes of Co(II), Ni(II), Cu(II) and Zn(II) with Schiff base have been prepared from metal salts in an alcoholic medium. The synthesized Schiff base and its metal complexes are characterized by elemental analysis, molar conductance measurements, magnetic susceptibility, FTIR and electronic absorption spectral data. The higher molar conductance values of these metal complexes

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10

Lincoln, Abraham, Srinath Boinapalli, and A. Anil Kumar. "Synthesis, Spectral Characterization and Antibacterial Investigation of Ni(II) Coordination Complexes of Macrocyclic Schiff base ligands Derived from 4-Aminoantipyrine." JOURNAL OF ADVANCES IN CHEMISTRY 13, no. 1 (2017): 5948–58. http://dx.doi.org/10.24297/jac.v13i12.6124.

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A series of Ni(II) complexes (NiL1-NiL5) have been synthesized from macrocyclic Schiff base ligands (L1-L5) were obtained from condensation of 4-aminoantipyrine derivative (L) with different diamines and hydrazides. All these compounds were well characterized by elemental, spectral analysis(mass, IR, 1H-NMR, electronic), magnetic suseceptibility, molar conductance and thermal studies. Macrocyclic Schiff bases are tetradentate with N4 donor system around the metal ion.Octahedral geometry have been assigned for all complexes. All ligands and complexes were examined for antibacterial activity and

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11

Pola, Someshwar, Yadagiri Bhongiri, Ramchander Jadhav, Prabhakar Ch, and Venkanna G. "Synthesis of new fused heterocyclic aromatic hydrocarbons via C–S and C–C bond formation by C–H bond activation in the presence of new Pd(ii) Schiff's base complexes." RSC Advances 6, no. 91 (2016): 88321–31. http://dx.doi.org/10.1039/c6ra15609f.

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12

Pankhurst, James R., Thomas Cadenbach, Daniel Betz, Colin Finn, and Jason B. Love. "Towards dipyrrins: oxidation and metalation of acyclic and macrocyclic Schiff-base dipyrromethanes." Dalton Transactions 44, no. 5 (2015): 2066–70. http://dx.doi.org/10.1039/c4dt03592e.

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Oxidation of acyclic Schiff-base dipyrromethanes cleanly results in dipyrrins, whereas the macrocyclic ‘Pacman’ analogues either decompose or form new dinuclear copper(ii) complexes that are inert to ligand oxidation.

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13

Gao, Feng, Xiaowan Feng, Liu Yang, and Xiaoyu Chen. "New sandwich-type lanthanide complexes based on closed-macrocyclic Schiff base and phthalocyanine molecules." Dalton Transactions 45, no. 17 (2016): 7476–82. http://dx.doi.org/10.1039/c6dt00683c.

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Two new sandwich-type lanthanide complexes simultaneously containing closed-macrocyclic Schiff base and phthalocyanine molecules were synthesized and structurally characterized. The magnetic studies reveal the corresponding dysprosium complex behaves as a typical SMM.

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14

Chen, Hui-Qing, Kun Zhang, Chao Jin, and Wei Huang. "Zinc halide template effects on the construction of [1 + 1] flexible Schiff-base macrocyclic complexes having pendant-armed dialdehyde components." Dalton Trans. 43, no. 22 (2014): 8486–92. http://dx.doi.org/10.1039/c4dt00605d.

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A pair of pendant-armed dialdehydes is used to react with 1,3-propanediamine to prepare six [1 + 1] flexible Schiff-base macrocyclic complexes in the presence of ZnX<sub>2</sub> salts (X = Cl, Br, I), where the template Zn(ii) cations and the auxiliary halide anions are believed to play important roles in forming the resulting macrocyclic Zn(ii) complexes.

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15

Anaam, Rasheed, Albayati Senan, Alazawi Sarab, Zuhair Enas, Merza Mudeer, and Abid Khalil. "New Homo and Heterobinuclear Macrocyclic Complexes Bearing Isatine Structural Characterization, Thermal Study and DFT Calculations." Biomedicine and Chemical Sciences 1, no. 3 (2022): 138–46. https://doi.org/10.48112/bcs.v1i3.187.

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A new metal-free macrocyclic Schiff base ligand bearing two metal cavities incorporated with two sets of N<sub>3</sub>O<sub>2</sub> donor atoms derived from 2, 6-diaminopyridine and isatine was synthesized. The new ligand was used to prepare homo and hetero binuclear macrocyclic Schiff base complexes with Ni (II), Cu (II), ZrO (II) and Ba (II) metal ions. The ligand and metal complexes were characterized using Fourier transform infrared (FT-IR), UV–vis, mass spectroscopy, elemental analysis (CHN), thermo gravimetric analysis (TGA), magnetic susceptibility, and molar conductivity mea

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16

Bharadwaj, P. K., J. A. Potenza, and H. J. Schugar. "Structure of a novel, macrocyclic Schiff base." Acta Crystallographica Section C Crystal Structure Communications 44, no. 4 (1988): 763–65. http://dx.doi.org/10.1107/s0108270187010345.

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17

Sallam, H. A., R. E. Abdel-Mageid, and A. E. Amr. "Synthesis of Macrocyclic Ttipeptidopyridine Schiff Base Candidates." Russian Journal of General Chemistry 89, no. 11 (2019): 2308–13. http://dx.doi.org/10.1134/s1070363219110239.

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18

Rasheed, Anaam, Senan Albayati, Sarab Alazawi, Enas Zuhair, Mudeer Merza, and Khalil Abid. "New Homo and Heterobinuclear Macrocyclic Complexes Bearing Isatine Structural Characterization, Thermal Study and DFT Calculations." Biomedicine and Chemical Sciences 3, no. 1 (2022): 138–46. http://dx.doi.org/10.48112/bcs.v1i3.187.

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A new metal-free macrocyclic Schiff base ligand bearing two metal cavities incorporated with two sets of N3O2 donor atoms derived from 2, 6-diaminopyridine and isatine was synthesized. The new ligand was used to prepare homo and hetero binuclear macrocyclic Schiff base complexes with Ni (II), Cu (II), ZrO (II) and Ba (II) metal ions. The ligand and metal complexes were characterized using Fourier transform infrared (FT-IR), UV–vis, mass spectroscopy, elemental analysis (CHN), thermo gravimetric analysis (TGA), magnetic susceptibility, and molar conductivity measurements. The DFT calculations u

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19

Jasim, Saade Abdalkareem, Yassine Riadi, Hasan Sh Majdi та Usama S. Altimari. "Nanomagnetic macrocyclic Schiff-base–Mn(ii) complex: an efficient heterogeneous catalyst for click approach synthesis of novel β-substitued-1,2,3-triazoles". RSC Advances 12, № 28 (2022): 17905–18. http://dx.doi.org/10.1039/d2ra02587f.

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A 15-membered macrocyclic Schiff base complex of manganese catalyzed the Huisgen 1,3-dipolar cycloaddition reactions has been developed and yielding a wide variety of 1,2,3-triazoles derivatives in good to excellent yields.

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20

Ali, Tamer Awad, and Gehad G. Mohamed. "Design and construction of an electrochemical sensor for the determination of cerium(iii) ions in petroleum water samples based on a Schiff base-carbon nanotube as an ionophore." RSC Advances 12, no. 1 (2022): 94–103. http://dx.doi.org/10.1039/d1ra08337f.

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A carbon paste and screen-printed sensor for Ce(iii)-selective determination were prepared using a 2,6-pyridine dicarbomethine-triethylene tetraamine macrocyclic Schiff base ligand and multi-walled carbon nanotubes as good sensing materials.

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21

Leniec, G., Slawomir M. Kaczmarek, J. Typek, Beata Kołodziej, Eugeniusz Grech, and W. Schilf. "Spectroscopic and Magnetic Properties of Gadolinium Macroacyclic and Macrobicyclic Complexes." Solid State Phenomena 128 (October 2007): 199–205. http://dx.doi.org/10.4028/www.scientific.net/ssp.128.199.

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As a result of the Schiff base condensation the gadolinium macroacyclic and macrobicyclic Schiff base complexes have been synthesized and investigated by infrared spectroscopy (IR) and electron paramagnetic resonance (EPR). Both electron ionization and electron spray Molecular Spectroscopy spectra confirmed the [1:1] proportion of a ligand to metal in gadolinium macrocyclic and mocrobicyclic Schiff base complex samples. The thermogravimetrydifferential thermal analysis (TG-DTA) indicated the presence of two water molecules in the innersphere of the macrobicyclic complex and confirmed no water

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22

Rajak, Ashish, Arpit Srivastava, Subhash Chandra Shrivastava, Ranjeet Singh Chauhan, Uday Singh Patel, and Shekhar Srivastava. "Synthesis and Spectral studies of Ru (II) complexes with Macrocyclic Ligands." Oriental Journal Of Chemistry 37, no. 4 (2021): 763–69. http://dx.doi.org/10.13005/ojc/370401.

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Fifteen Ru (II) complexes of the type [RuCl2(L)] (where L= N4 donor macrocyclic ligands) have been synthesised by reaction of [(RuCl2(DMSO)4] with fifteen macrocyclic Schiff base ligands containing N4 donors groups. The prepared fifteen [RuCl2(L)] complexes were characterised by elemental analysis, molar conductivity, UV-visible, IR, X- ray photoelectron spectra (XPS) and magnetic susceptibility measurementsand an octahedral geometry was proposed for all these complexes.

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23

Jaiswal, Amit, Anil Kumar Pal, Dharmendra Kumar Sahu, and Ranjeet Kumar. "Synthesis and characterizations of Hg (II) Complex of Macrocyclic complexes compounds Tetradecahydrodibenzo hexaazacyclooctadecine with HgX2 (X= Cl, Br) by Hirshfeld analysis and antimicrobial activity." Journal of Drug Delivery and Therapeutics 14, no. 3 (2024): 115–21. http://dx.doi.org/10.22270/jddt.v14i3.6476.

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This study examines the synthesis and characterization of a macrocyclic complex molecule having the general formula [M-LX2], where M =Hg (II) with schiff base Tetradecahydrodibenzo hexaazacyclooctadecine ligands. Resulted from the interaction between mercury and the diethyl triamine and benzene- 1, 2 diol in an ethanolic solution. Schiff base and its novel mercury (II) Complexes were studied vibrational in the solid state using spectral, 1H-NMR, IR, UV, and antimicrobial activity approaches. We were able to establish the coordination mode of the metal in complexes by comparing the changes in t

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24

Ertul, Seref, and Mevlüt Bayrakci. "Synthesis of Asymmetrical Macrocyclic Ligands and their Metal Complexes." Eurasian Chemico-Technological Journal 9, no. 3 (2007): 193–97. https://doi.org/10.18321/ectj312.

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Our motive behind the synthesis of this type of asymmetrical macrocyclic ligands was to examine their possible applications in cation recognition processes, as homo or heteronuclear complexes can be synthesized from alkali and transition metal cations and these complexes may also serve as models of relevance to bioinorganic chemistry such as metalloenzymes. Even though the enormous number of Schiff base macrocycles and their complexes have already been described, many more interesting systems of this type surely await discovery. These structures are found to be powerful tools used to define in

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25

Wilson, Rajni K., Sébastien Dhers, Stephen Sproules, Eric J. L. McInnes, and Sally Brooker. "Three Manganese Complexes of Anionic N4-Donor Schiff-Base Macrocycles: Monomeric MnII and MnIII, and dimeric MnIV." Australian Journal of Chemistry 72, no. 10 (2019): 805. http://dx.doi.org/10.1071/ch19209.

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Three manganese macrocyclic complexes of two anionic N4-donor [1+1] Schiff-base macrocycles that differ in ring size (14 versus 16 membered), HLEt and HLPr (obtained from condensation of diphenylamine-2,2′-dicarboxaldehyde and either diethylenetriamine or dipropylenetriamine), are reported. Specifically, a pair of monomeric complexes MnIILEt(NCS)(H2O) and [MnIIILPr(NCS)2]·0.5H2O, plus a dimeric complex [MnIV2LEt2(O)2](ClO4)2·3DMF have been synthesised and characterised. Single crystal structure determinations on [MnIIILPr(NCS)2]·0.5H2O and [MnIV2LEt2(O)2](ClO4)2·3DMF revealed octahedral mangan

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26

Mashhadikhan, Samaneh, Abdolreza Moghadassi, Abtin Ebadi Amooghin, and Hamidreza Sanaeepur. "Interlocking a synthesized polymer and bifunctional filler containing the same polymer's monomer for conformable hybrid membrane systems." Journal of Materials Chemistry A 8, no. 7 (2020): 3942–55. http://dx.doi.org/10.1039/c9ta13375e.

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Extra high-performance MMMs were fabricated by embedding a bifunctional host/guest complex (Schiff base macrocyclic copper complex in the FAU super-cages of zeolite 13X) into the 6FDA-durene matrix and examined for CO<sub>2</sub>/light gas separation.

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27

Gao, Feng, Yi-Quan Zhang, Wang Sun, Huan Liu, and Xiaoyu Chen. "Syntheses, structures and magnetic properties of macrocyclic Schiff base-supported homodinuclear lanthanide complexes." Dalton Transactions 47, no. 33 (2018): 11696–704. http://dx.doi.org/10.1039/c8dt02243g.

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Five macrocyclic Schiff base-supported homodinuclear lanthanide complexes were successfully designed and synthesized by template strategy. Theoretical analysis and magnetic measurements reveal dysprosium complex 1 behaves as a typical SMM with intramolecular ferromagnetic Dy<sup>3+</sup>⋯Dy<sup>3+</sup> interaction.

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28

Fenton, D. E., and P. A. Vigato. "Macrocyclic Schiff base complexes of lanthanides and actinides." Chemical Society Reviews 17 (1988): 69. http://dx.doi.org/10.1039/cs9881700069.

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29

Chang, Fei-Fan, Kun Zhang, and Wei Huang. "Schiff-base macrocyclic ZnII complexes based upon flexible pendant-armed extended dialdehydes." Dalton Transactions 48, no. 2 (2019): 363–69. http://dx.doi.org/10.1039/c8dt03894e.

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This Frontier article reviews Schiff-base Zn<sup>II</sup> macrocycles derived from flexible pendant-armed extended dialdehydes including structure-determining factors in template-directed syntheses, further post-modifications and applications.

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30

Sulekh, Chandra, and Kumar Gupta Lokesh. "Designing and synthesis of macrocyclic Schiff base ligand Study of interaction with MnII, CoII, NiII and Cull and biological screening." Journal of Indian Chemical Society Vol. 82, May 2005 (2005): 454–58. https://doi.org/10.5281/zenodo.5830213.

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Department of Chemistry, Zakir Husain College ( University of Delhi ). J. L. N. Marg, New Delhi- 11 0 002. India <em>E-mail</em>: schandra_OO@yahoo.com; lokesh_kg@rcdillmail.com    Fax: 91-11-23215906 <em>Manuscript received 17 June 2003, revised 28 July 2004, accepted 2 February 2005</em> The synthesis of a tetradentate ligand i.e. 3,4,12,13-tetrapheny1-2,5,11,1-1,19,20-hexaaza tricyclo[13.3.1.1<sup>6-10</sup>]cosa 1(19),2,4,6,8,10(20),11,13,15,17-decaene (L) and its complexes with manganese(II), cobalt(II), nickel(II) and copper(II) have been reported. The complexes are charac

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31

Gavey, Emma L., Yassine Beldjoudi, Jeremy M. Rawson, Theocharis C. Stamatatos, and Melanie Pilkington. "Slow relaxation in the first penta-aza Dy(iii) macrocyclic complex." Chem. Commun. 50, no. 28 (2014): 3741–43. http://dx.doi.org/10.1039/c4cc00930d.

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The Schiff-base condensation of diacetyl pyridine with triethylenetetramine in the presence of DyCl<sub>3</sub> affords a 15-membered N<sub>5</sub> macrocycle that exhibits SMM-like slow relaxation of magnetization in zero field.

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32

Yang, Wenxue, Ke-Qing Zhao, Bi-Qin Wang, et al. "Manganese coordination chemistry of bis(imino)phenoxide derived [2 + 2] Schiff-base macrocyclic ligands." Dalton Transactions 45, no. 1 (2016): 226–36. http://dx.doi.org/10.1039/c5dt03453a.

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33

Salassa, Giovanni, Ana M. Castilla, and Arjan W. Kleij. "Cooperative self-assembly of a macrocyclic Schiff base complex." Dalton Transactions 40, no. 19 (2011): 5236. http://dx.doi.org/10.1039/c1dt10069f.

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34

Siddiqi, K. S., A. Jabeen, N. Kishat, Shahjahan, and S. A. A. Zaidi. "Synthesis and Characterization of Lanthanide Schiff Base Macrocyclic Complexes." Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry 23, no. 5 (1993): 735–43. http://dx.doi.org/10.1080/15533179308016856.

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35

Kumar, Kaushal, Mithun Kori, Himanshu Pandey, Satyesh Raj Anand, Neha Mishra, and S. P. Shrivastava. "Study of In Silico on Schiff Base Ligand Against Mycobacterium Tuberculosis." Mediterranean Journal of Chemistry 13, no. 2 (2023): 93. http://dx.doi.org/10.13171/mjc02303211679kumar.

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Here, we have synthesized the hetero-atoms containing; 3, 4, 6–Triazabicyclo [6, 3, 1] dodeca–1 (12), 2, 6, 8, 10–pentene–5–thione (TBD) macrocyclic Schiff base ligand for the application in antituberculosis (anti-TB). This TBD ligand moiety has high donor ability due to the presence of three nitrogen donor atoms, which are also the reason for the interaction between the ligand and protein molecule. The TBD Schiff base ligand is characterized by various spectroscopic techniques such as; Fourier-Transform Infrared (FT-IR), Proton Nuclear Magnetic Resonance (1HNMR), and Ultraviolet-Visible (UV-V

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36

Patroniak-Krzyminiewska, Violetta, and Wanda Radecka-Paryzek. "Azaoxa Macrocyclic and Acyclic Complexesof Lanthanides." Collection of Czechoslovak Chemical Communications 63, no. 3 (1998): 363–70. http://dx.doi.org/10.1135/cccc19980363.

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The template reactions of 2,6-diacetylpyridine with 3,6-dioxaoctane-1,8-diamine in the presence of dysprosium(III), thulium(III) and lutetium(III) chlorides and erbium(III) perchlorate produce the complexes of 15-membered macrocyclic ligand with an N3O2 set of donor atoms as a result of the [1+1] Schiff base cyclocondensation. In contrast, analogous reactions involving the lighter lanthanide ions (lanthanum(III), samarium(III) and europium(III)) yield the acyclic complexes with terminal acetylpyridyl groupings as products of the partial [2+1] condensation. The complexes were characterized by s

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37

Alam, M. M., R. Begum, S. M. M. Rahman, and S. M. S. Islam. "Synthesis, Spectroscopic and Electrochemical Studies of Mononuclear Fe(II) and Ni(II) Complexes Containing a Macrocyclic Ligand Derived from Pyridine-2,6-dicarboxaldehyde and 1,2-Bis(2-aminoethoxy) Ethane." Journal of Scientific Research 3, no. 3 (2011): 599–607. http://dx.doi.org/10.3329/jsr.v3i3.7231.

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The cyclic (2+2) template condensation of 2,6-pyridinedicarboxaldehyde with 1,2-bis(2-aminoethoxy) ethane using Pb(SCN)2 as the metal source gave dinuclear lead(II) complex, Pb2L1(SCN)4 (1), where L1 is tetra-Schiff-base macrocycle. The transmetallation treatment of 1 with suitable metal perchlorate yield [FeL1](ClO4)2 (2) and [NiL1](ClO4)2 (3). The complexes (2 & 3) have been characterized by elemental analyses, IR, UV-visible, and ESI-MS spectroscopy. Based on spectral data, octahedral geometry may be proposed for these complexes. The electrochemical behavior of iron and nickel complexes

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38

Shipra, Srivastava, Srivastava Ankita, Tripathi Namrata, and K. Sharma V. "Mononuclear and binuclear ruthenium(III) complexes of macrocyclic compartmental ligands : synthetic, spectral speciation, electrochemical behaviour and antimicrobial studies." Journal of Indian Chemical Society Vol. 84, Jun 2007 (2007): 524–31. https://doi.org/10.5281/zenodo.5820460.

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Department of Chemistry, University of Lucknow, Lucknow-226 007, Uttar Pradesh, India <em>E-mail </em>: vksharma2l@hotmail.com <em>Manuscript received 26 December 2006, revised 28 March 2007, accepted 30 March 2007</em> The macrocyclic compartmental Schiff base ruthenium(lll) complexes have been synthesized. A variety of complexes have been obtained by different procedures and also depending on the choice of lateral diamine fragments with ruthenium ions. The compounds were characterized by elemental analyses, conductometric and magnetochemical behaviour, as well as by IR, ESR, TG, electrochemi

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Hu, Peng, Siying Guo, Qilong Zhang, Yunqian Zhang, and Bixue Zhu. "Synthesis, Characterization of Novel [1+1] Schiff Base Macrocyclic Compounds." Chinese Journal of Organic Chemistry 33, no. 2 (2013): 325. http://dx.doi.org/10.6023/cjoc201210010.

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Adams, Harry, Neil A. Bailey, David E. Fenton, and Yuh-Shan Ho. "A polymeric tetraimine Schiff base macrocyclic complex of silver(I)." Inorganica Chimica Acta 212, no. 1-2 (1993): 65–68. http://dx.doi.org/10.1016/s0020-1693(00)92309-0.

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Fenton, David E., Ray W. Matthews, Mary McPartlin, Brian P. Murphy, Ian J. Scowen, and Peter A. Tasker. "Macrocyclic helicates: complexes of a 34-membered Schiff-base ligand." Journal of the Chemical Society, Chemical Communications, no. 11 (1994): 1391. http://dx.doi.org/10.1039/c39940001391.

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Khalaji, A. D., S. Hafez Ghoran, M. Pojarová, and M. Dušek. "Characterization and crystal structures of new Schiff base macrocyclic compounds." Journal of Structural Chemistry 56, no. 7 (2015): 1410–14. http://dx.doi.org/10.1134/s0022476615070240.

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Menif, Rached, Arthur E. Martell, Philip J. Squattrito, and Abraham Clearfield. "New hexaaza macrocyclic binucleating ligands. Oxygen insertion with a dicopper(I) Schiff base macrocyclic complex." Inorganic Chemistry 29, no. 23 (1990): 4723–29. http://dx.doi.org/10.1021/ic00348a028.

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Liu, Ying-Ying, Jie Liu, Jin Yang, Bo Liu, and Jian-Fang Ma. "Eight coordination compounds based on a reduced Schiff base tetraaminodiphenol macrocyclic ligand." Inorganica Chimica Acta 403 (July 2013): 85–96. http://dx.doi.org/10.1016/j.ica.2013.03.009.

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Keypour, Hassan, Ahmad Ali Dehghani-Firouzabadi, Maryam Shayesteh, and Sadegh Salehzadeh. "Synthesis and Characterisation of Macrocyclic Copper(II) Complexes Containing N3O4 Donor Sets." Journal of Chemical Research 2008, no. 10 (2008): 587–88. http://dx.doi.org/10.3184/030823408x360184.

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Two new macrocyclic Schiff-base complexes of Cu(II) have been prepared by the template reaction of 2,6-bis (2-formylphenoxymethyl)pyridine with 1,2-bis(2′-aminophenoxy)benzene [L1] or with 1,2-bis(2′-aminophenoxy)-4-tert-butylbenzene [L2] in the presence of Cu(II) perchlorate. The amines used have low flexibility and therefore the formation of complexes was very difficult. The synthesised 23-membered, heptadentate N3O4 complexes were characterised by elemental analysis, IR, and FAB-mass spectroscopy.

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Ahmed, Riyadh M., Enaam I. Yousif, Hasan A. Hasan, and Mohamad J. Al-Jeboori. "Metal Complexes of Macrocyclic Schiff-Base Ligand: Preparation, Characterisation, and Biological Activity." Scientific World Journal 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/289805.

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A new macrocyclic multidentate Schiff-base ligand Na4L consisting of two submacrocyclic units (10,21-bis-iminomethyl-3,6,14,17-tricyclo[17.3.1.18,12]tetracosa-1(23),2,6,8,10,12(24),13,17,19,21,-decaene-23,24-disodium) and its tetranuclear metal complexes with Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) are reported. Na4L was prepared via a template approach, which is based on the condensation reaction of sodium 2,4,6-triformyl phenolate with ethylenediamine in mole ratios of 2 : 3. The tetranuclear macrocyclic-based complexes were prepared from the reaction of the corresponding metal chloride w

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Rezaeivala, Majid, and Hassan Keypour. "Schiff base and non-Schiff base macrocyclic ligands and complexes incorporating the pyridine moiety – The first 50 years." Coordination Chemistry Reviews 280 (November 2014): 203–53. http://dx.doi.org/10.1016/j.ccr.2014.06.007.

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TURKYILMAZ, MURAT, Murat Donmez, and N. B. Gür. "Synthesis, characterization and measurement of antimicrobial activity of (6Z,15Z)-4,18-dioxa-9,13-dithia-7,15-diaza-1,2(1,4),5,8,11,14,17(1,2)- heptabenzenecyclononadecaphan-6,15-diliene and its palladium(II) chloride complex." UNEC Journal of Engineering and Applied Sciences 4, no. 2 (2024): 20–36. https://doi.org/10.61640/ujeas.2024.1203.

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To synthesize the Schiff base with the desired properties, a transition from a monomeric molecule to a macrocyclic structure was made. For this purpose; (oxy)-dibenzaldehyde dibenzaldehyde derivative, (oxy)bis(N-prop)-1-en-2-yl-aniline derivative, (oxy)-dianiline derivative and (sulfanediyl)-dianiline compounds were obtained at the end of four different reaction processes. In the last step of these reactions, a macrocyclic compound (6Z,15Z)-4,18-dioxa-9,13-dithia-7,15-diaza-1,2(1,4),5,8,11,14,17(1,2)-heptabenzenecyclononadecaphan- 6,15-diene Schiff base was obtained by condensation method. As

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Katiyar, Shikha, Siddharam S, Devendra Pratap Rao, and Shiv Govind Prasad. "Antibacterial Effects of Mo(VI) Macrocyclic Compounds." Oriental Journal Of Chemistry 40, no. 5 (2024): 1356–66. http://dx.doi.org/10.13005/ojc/400518.

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Preparing a monomeric [MoO2(SL)] containing a Schiff base was achieved by condensing furil with 3-bromo-5-(trifluoromethyl) benzene-1,2-diamine, along with preparing 4 different compounds containing [MoO2(MSL). A study of the interaction between 1,3-diketones and [MoO2(SL)] is presented in this paper. As part of the study, UV-Vis, magnetic, IR, NMR, and thermal characterization were carried out on five MoO2(VI) compounds. The coordination number of Mo will be six. The molybdenum octahedral geometry in these compounds consists of 4 N- and 2 O-atoms. When tested against S. aureus and S. typhi, t

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Knapton, Matthew, and Vickie McKee. "Triple ring contraction of a [2+2] macrocyclic ligand." Acta Crystallographica Section C Crystal Structure Communications 69, no. 8 (2013): 837–40. http://dx.doi.org/10.1107/s010827011301768x.

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Schiff base condensation of 2,6-diformylpyridine and 1,3-diaminopropan-2-ol in the presence of a BaIItemplate ion yields a complex containing a [2+2] macrocycle, [Ba2(μ1,2-ClO4)2(H2L1)2], where H2L1 is 3,7,15,19,25,26-hexaazatricyclo[19.3.1.19,13]hexacosa-1(25),2,7,9(26),10,12,14,19,21,23-decaene-5,17-diol. On transmetallation with CuIIcations, the macrocycle undergoes three successive ring contractions, yielding crystals of (acetato-κO)[26,28-dioxa-3,7,15,19,25,27-hexaazahexacyclo[19.3.1.12,5.19,13.117,10.03,8]octacosa-1(25),9(27),10,12,14,21,23-heptaene-κ5N]copper(II) perchlorate, [Cu(CH3COO

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