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Journal articles on the topic 'Pentadentate ligands'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Kroll, Nicole, Kolja Theilacker, Marc Schoknecht, et al. "Controlled ligand distortion and its consequences for structure, symmetry, conformation and spin-state preferences of iron(ii) complexes." Dalton Transactions 44, no. 44 (2015): 19232–47. http://dx.doi.org/10.1039/c5dt02502h.

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2

Grau, Michaela, Andrew Kyriacou, Fernando Cabedo Martinez, Irene M. de Wispelaere, Andrew J. P. White, and George J. P. Britovsek. "Unraveling the origins of catalyst degradation in non-heme iron-based alkane oxidation." Dalton Trans. 43, no. 45 (2014): 17108–19. http://dx.doi.org/10.1039/c4dt02067g.

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A series of iron(ii) complexes with tetradentate and pentadentate pyridyl amine ligands has been used for the oxidation of cyclohexane with hydrogen peroxide. Ligand degradation is observed under oxidising conditions via oxidative N-dealkylation.

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3

Munshi, Sandip, Arup Sinha, Solomon Yiga, et al. "Hydrogen-atom and oxygen-atom transfer reactivities of iron(iv)-oxo complexes of quinoline-substituted pentadentate ligands." Dalton Transactions 51, no. 3 (2022): 870–84. http://dx.doi.org/10.1039/d1dt03381f.

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4

Comba, Peter, Hubert Wadepohl, and Arkadius Waleska. "Redox Properties of Iron Complexes with Pentadentate Bispidine Ligands." Australian Journal of Chemistry 67, no. 3 (2014): 398. http://dx.doi.org/10.1071/ch13454.

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The solution coordination chemistry of iron complexes with the pentadentate bispidine ligands L1, L2, and L3 (dimethyl 9-oxo-2,4-di(pyridin-2-yl)-3,7-diazabicyclo[3.3.1]nonane-1,5-dicarboxylate derivatives) was examined. While in acetonitrile, (L1,2)FeII/III species have a preference for Cl– as co-ligand. The corresponding aqua and hydroxido complexes also prevail in the presence of Cl– in aqueous solution. The observed FeII/III potentials in water (cyclic voltammetry) and potentials of (L1–3)FeIV=O (buffered and unbuffered aqueous solutions) are strikingly similar, i.e. the latter are assigne

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5

Hitomi, Yutaka, Yuji Iwamoto, Akihiro Kashida, and Masahito Kodera. "Mononuclear nonheme iron(iii) complexes that show superoxide dismutase-like activity and antioxidant effects against menadione-mediated oxidative stress." Chemical Communications 51, no. 41 (2015): 8702–4. http://dx.doi.org/10.1039/c5cc02019k.

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6

Groß, C., Y. Sun, T. Jost, et al. "Generation of a zinc and rhodium containing metallomacrocycle by rearrangement of a six-coordinate precursor complex." Chemical Communications 56, no. 3 (2020): 368–71. http://dx.doi.org/10.1039/c9cc07723e.

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7

Khan, Muhammad S., Nawal K. Al-Rasbi, Edwin C. Constable, Adrian R. Dale, and Jack Lewis. "Derivatized Pentadentate Macrocyclic Ligands and Their Transition Metal Complexes." Sultan Qaboos University Journal for Science [SQUJS] 7, no. 2 (2002): 241. http://dx.doi.org/10.24200/squjs.vol7iss2pp241-249.

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The reaction of the pendant hydroxyethyl group in the planar pentadentate macrocyclic ligand,1,11-bis(2’-hydroxyethyl)-4,8;12,16;17,21-trinitrilo-1,2,10,11-tetraazacyclohenicosa- 2,4,6,9,12,14,18,20-octaene (L2), derived from the condensation of 2,6-pyridinedialdehyde with 6,6’-bis(2’ hydroxyethylhydrazino) -2,2’-bipyridine (L1), has been investigated. Esterification reactions are facile, and the reaction of the hydroxyethyl-substituted macrocycle with thionyl chloride yields a chloroethyl derivative. Metal complexes of the new derivatized macrocyclic ligands L3-6having general formula ML3-6X2

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8

Hardy, E. E., K. M. Wyss, M. A. Eddy, and A. E. V. Gorden. "An example of unusual pyridine donor Schiff base uranyl (UO22+) complexes." Chemical Communications 53, no. 42 (2017): 5718–20. http://dx.doi.org/10.1039/c7cc02747h.

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9

McNeese, Timothy J., and Timothy E. Mueller. "Complexes of vanadium(III) with pentadentate ligands." Inorganic Chemistry 24, no. 19 (1985): 2981–85. http://dx.doi.org/10.1021/ic00213a022.

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10

Ng, Karno, Ratnasamy Somanathan, and Patrick J. Walsh. "Synthesis of homochiral pentadentate sulfonamide-based ligands." Tetrahedron: Asymmetry 12, no. 12 (2001): 1719–22. http://dx.doi.org/10.1016/s0957-4166(01)00292-0.

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11

Pillai, M. R. A., C. S. John, J. M. Lo, et al. "Technetium complexes of pentadentate amine-phenol ligands." Nuclear Medicine and Biology 20, no. 2 (1993): 211–16. http://dx.doi.org/10.1016/0969-8051(93)90117-d.

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12

Lap-Yan, Chung, Edwin C. Constable, Muhammad S. Khan, and Jack Lewis. "Vanadium complexes of planar pentadentate macrocyclic ligands." Inorganica Chimica Acta 185, no. 1 (1991): 93–96. http://dx.doi.org/10.1016/s0020-1693(00)81681-3.

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13

Knight, Paul D., Andrew J. P. White, and Charlotte K. Williams. "Dinuclear Zinc Complexes Using Pentadentate Phenolate Ligands." Inorganic Chemistry 47, no. 24 (2008): 11711–19. http://dx.doi.org/10.1021/ic8014173.

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14

Bhula, Rajumati, Peter Osvath, and David C. Weatherburn. "Complexes of tridentate and pentadentate macrocyclic ligands." Coordination Chemistry Reviews 91 (November 1988): 89–213. http://dx.doi.org/10.1016/0010-8545(88)80014-6.

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15

Popowski, Yanay, Israel Goldberg, and Moshe Kol. "The stereoselectivity of bipyrrolidine-based sequential polydentate ligands around Ru(ii)." Chemical Communications 52, no. 51 (2016): 7932–34. http://dx.doi.org/10.1039/c6cc02676a.

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The Ru(ii) coordination chemistry of the sequential hexadentate, tetradentate and the novel hybrid pentadentate ligands assembled around the chiral bipyrrolidine core and including bipyridyl and pyridyl periphery units is described.

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16

Nemec, Ivan, Radovan Herchel, Ingrid Svoboda, Roman Boča, and Zdeněk Trávníček. "Large and negative magnetic anisotropy in pentacoordinate mononuclear Ni(ii) Schiff base complexes." Dalton Transactions 44, no. 20 (2015): 9551–60. http://dx.doi.org/10.1039/c5dt00600g.

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Pentacoordinate Ni(ii) complexes with pentadentate Schiff base ligands possess large and negative values of axial magnetic anisotropy. The relationship between the shape of the coordination polyhedron and uniaxial anisotropy is outlined.

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17

Shaban, Shaban Y., Ralph Puchta, and Rudi van Eldik. "Five-coordinate Zinc(II) Complexes Containing Sterically Demanding Bio-mimetic N3S2 Ligands. Syntheses, Characterization and DFT Calculations." Zeitschrift für Naturforschung B 65, no. 3 (2010): 251–57. http://dx.doi.org/10.1515/znb-2010-0305.

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In search of complexes having [ZnN3S2] cores in the monomeric form with trans-thiolate donor atoms, new sterically demanding tri- and pentadentate ligands containing biomimetic N3S2 cores have been synthesized. The reaction of bis(2-mercapto-3,5-di-tert-butylaniline)zinc(II) with 2,6- diacetylpyridine leads to the formation of the zinc imine [Zn(pytBuN2Me2S2)] (3) which is stable and can be isolated and characterized in the solid state. Complex 3 can be converted to the zinc amine function [Zn(pytBuN2H2Me2S2)] (5) without losing the metal center using NaBH4 in methanol solution. On the other h

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18

Blasco, Salvador, Begoña Verdejo, María Paz Clares, and Enrique García-España. "Transition Metals Meet Scorpiand-like Ligands." Crystals 13, no. 9 (2023): 1338. http://dx.doi.org/10.3390/cryst13091338.

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Scorpiand-like ligands combine the preorganization of the donor atoms of macrocycles and the degrees of freedom of the linear ligands. We prepared the complexes of several of these ligands with transition metal ions and made a crystallographic and water solution speciation studies. The analysis of the resulting crystal structures show that the ligands have the ability to accommodate several metal ions and that the coordination geometry is mostly determined by the ligand. Ligand 6-[3,7-diazaheptyl]-3,6,9–triaza-1-(2,6)-pyridinacyclodecaphane (L3) is an hexadentate ligand that affords a family o

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19

Blackman, Allan G. "The coordination chemistry of acyclic pentadentate pentaamine ligands." Polyhedron 161 (March 2019): 1–33. http://dx.doi.org/10.1016/j.poly.2018.12.004.

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20

Seitz, Michael, Anja Kaiser, Alexander Tereshchenko, Christian Geiger, Yukitaka Uematsu, and Oliver Reiser. "Modular synthesis of chiral pentadentate bis(oxazoline) ligands." Tetrahedron 62, no. 42 (2006): 9973–80. http://dx.doi.org/10.1016/j.tet.2006.08.003.

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21

Bai, Yan, Dongbin Dang, Xin Cao, Chunying Duan, and Qingjin Meng. "One-dimensional copper polymers with pentadentate diazine ligands." Inorganic Chemistry Communications 9, no. 1 (2006): 86–89. http://dx.doi.org/10.1016/j.inoche.2005.10.005.

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22

Takeyama, Tomoyuki, and Koichiro Takao. "Effects of coordinating heteroatoms on molecular structure, thermodynamic stability and redox behavior of uranyl(vi) complexes with pentadentate Schiff-base ligands." RSC Advances 12, no. 37 (2022): 24260–68. http://dx.doi.org/10.1039/d2ra04639c.

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The U–X bond strength and thermodynamic stability of uranyl(vi) complexes with pentadentate N2O2X1-donating ligands (X = NH, O, S) are affected by the difference in X. In contrast, the X atom does not largely affect the redox behavior of the complexes.

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23

Martinelli, Jonathan, Edoardo Callegari, Zsolt Baranyai, Alberto Fraccarollo, Maurizio Cossi, and Lorenzo Tei. "Semi-Rigid (Aminomethyl) Piperidine-Based Pentadentate Ligands for Mn(II) Complexation." Molecules 26, no. 19 (2021): 5993. http://dx.doi.org/10.3390/molecules26195993.

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Two pentadentate ligands built on the 2-aminomethylpiperidine structure and bearing two tertiary amino and three oxygen donors (three carboxylates in the case of AMPTA and two carboxylates and one phenolate for AMPDA-HB) were developed for Mn(II) complexation. Equilibrium studies on the ligands and the Mn(II) complexes were carried out using pH potentiometry, 1H-NMR spectroscopy and UV-vis spectrophotometry. The Mn complexes that were formed by the two ligands were more stable than the Mn complexes of other pentadentate ligands but with a lower pMn than Mn(EDTA) and Mn(CDTA) (pMn for Mn(AMPTA)

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24

Sellmann, Dieter, Klaus Höhn, and Matthias Moll. "Übergangsmetallkomplexe mit Schwefelliganden, LX / Transition Metal Complexes with Sulfur Ligands, LX." Zeitschrift für Naturforschung B 46, no. 5 (1991): 665–72. http://dx.doi.org/10.1515/znb-1991-0519.

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The pentadentate thioether thiolate ligand ′buS5′2 (= dianion of 2,2′-bis(2-mercapto-3,5-di-tertiary-butylphenylthio)diethylsulfide) reacts with iron(II) ions to give the diamagnetic [Fe′buS5′] (1), which only coordinates σ-π ligands such as CO, NO, NO+ or P(OPh)3. In this respect, the [Fe′buS5′] fragment differs from the parent complex [Fe′S5′] (′S5′2- = dianion of 2,2′-bis(2-mercaptophenylthio)diethylsulfide) as well as from the related [Fe′NHS4′] (′NHS4′2- = dianion of 2,2′-bis(2-mercaptophenylthio)diethylamine), both of which are able to coordinate also σ-ligands such as N,H4 or NH3. Synth

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25

Lin, Jin, Qiangsheng Sun, and Wei Sun. "A DFT study on the C–H oxidation reactivity of Fe(iv)–oxo species with N4/N5 ligands derived from l-proline." RSC Advances 11, no. 4 (2021): 2293–97. http://dx.doi.org/10.1039/d0ra08496d.

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The hydroxylation of hexane by two Fe<sup>IV</sup>O complexes bearing a pentadentate ligand (N5, Pro3Py) and a tetradentate ligand (N4, Pro2PyBn) derived from l-proline was studied by DFT calculations.

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26

Lin, Jin, Qiangsheng Sun, and Wei Sun. "A DFT study on the C–H oxidation reactivity of Fe(iv)–oxo species with N4/N5 ligands derived from l-proline." RSC Advances 11, no. 4 (2021): 2293–97. http://dx.doi.org/10.1039/d0ra08496d.

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The hydroxylation of hexane by two Fe<sup>IV</sup>O complexes bearing a pentadentate ligand (N5, Pro3Py) and a tetradentate ligand (N4, Pro2PyBn) derived from l-proline was studied by DFT calculations.

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27

Li, Jun-Xia, Zhong-Xiang Du, and Wei-Ping Huang. "Synthesis, Structure, and Spectral and Magnetic Properties of a Three-dimensional Cobalt(II)-Neodymium(III) Heterometal-Organic Framework Based on Oxydiacetic Acid." Zeitschrift für Naturforschung B 66, no. 10 (2011): 1029–34. http://dx.doi.org/10.1515/znb-2011-1007.

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A new 3d-4 f heteronuclear coordination polymer containing cobalt and neodymium, [Nd2Co3(oda)6(H2O)6]·3H2O}n (1) (H2oda = oxydiacetic acid), has been synthesized and structurally characterized. In 1, the oxydiacetate dianions (oda2−) act as pentadentate ligands, and each of them chelates one Nd3+ ion and bridges two Co2+ ions. The infinite connection of metal ions and ligands results in a highly ordered 3D hexagonal channel framework. The photoluminescent, EPR and magnetic properties of the complex were also investigated.

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28

Sessler, Jonathan L., Michael Cyr, and Toshiaki Murai. "The Coordination Chemistry of Planar Pentadentate “Porphyrin-Like” Ligands." Comments on Inorganic Chemistry 7, no. 6 (1988): 333–50. http://dx.doi.org/10.1080/02603598808072316.

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29

Lyon, John M., and Edward Gunther. "KINETICS OF DISSOCIATION OF NICKEL COMPLEXES WITH PENTADENTATE LIGANDS." Journal of Coordination Chemistry 34, no. 1 (1995): 13–22. http://dx.doi.org/10.1080/00958979508024299.

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30

Barandov, Ali, and Ulrich Abram. "Rhenium(V) Complexes with Pentadentate P,N,O Ligands." Inorganic Chemistry 48, no. 17 (2009): 8072–74. http://dx.doi.org/10.1021/ic901152y.

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31

Khan, Muhammad S., Nawal K. Al-Rasbi, and Edwin C. Constable. "Synthesis and Characterization of Some Macrocylic Complexes Incorporating Indole and 2,2'-Bipyridine or 1,10-Phenanthroline." Sultan Qaboos University Journal for Science [SQUJS] 20, no. 1 (2015): 20. http://dx.doi.org/10.24200/squjs.vol20iss1pp20-28.

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Complexes of anionic pentadentate macrocyclic ligands by the template condensation of bis(hydrazino)2,2'-bipyridine or 1,10-phenanthroline with an indoledialdehyde have been synthesized. The new Mn(II), Fe(II), Co(II), Ni(II), Cu(II) and Zn(II) macrocyclic complexes have been characterized by analytical and spectroscopic techniques and by conductivity and magnetic susceptibility measurements.

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32

Nemec, Ivan, and Radovan Herchel. "The Role of Methyl Substitution in Spin Crossover of Fe(III) Complexes with Pentadentate Schiff Base Ligands." Inorganics 13, no. 2 (2025): 57. https://doi.org/10.3390/inorganics13020057.

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A series of mononuclear complexes, [Fe(L5)(bylim)](BPh4), where L5 represents a pentadentate Schiff base ligand, bylim is 1-benzyl-1-imidazole, and BPh4− is the tetraphenylborate anion, was synthesized. The determined crystal structures indicate the absence of significant cooperative interactions, which influence the properties of the eventual spin transition. Changes in magnetic behavior induced by substitution of the pentadentate ligand were investigated through magnetic susceptibility measurements. It was found that only complexes containing a non-substituted secondary amino group exhibit s

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33

Nagata, Toshi, and Koji Tanaka. "Pentadentate Terpyridine−Catechol Linked Ligands and Their Cobalt(III) Complexes." Inorganic Chemistry 39, no. 16 (2000): 3515–21. http://dx.doi.org/10.1021/ic9912880.

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34

Vad, Mads S., Anne Nielsen, Anders Lennartson, Andrew D. Bond, John E. McGrady, and Christine J. McKenzie. "Switching on oxygen activation by cobalt complexes of pentadentate ligands." Dalton Transactions 40, no. 40 (2011): 10698. http://dx.doi.org/10.1039/c1dt10594a.

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35

Chessa, Gavino, Anna Maria Maccioni, and Pietro Traldi. "Electron impact mass spectrometry of some pyridyl hydrazone pentadentate ligands." Organic Mass Spectrometry 23, no. 1 (1988): 48–51. http://dx.doi.org/10.1002/oms.1210230109.

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36

Xu, Li-Qing, Li-Ping Lu, and Miao-Li Zhu. "Analogy to a Chinese knot in an ion-pair copper(II)–neodymium(III) complex based on a hexadentate Schiff base condensation product of 5-bromosalicylaldehyde and glycylglycine." Acta Crystallographica Section C Crystal Structure Communications 69, no. 4 (2013): 376–79. http://dx.doi.org/10.1107/s0108270113006367.

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Self-assembly of CuCl2, NdCl3, 5-bromosalicylaldehyde and glycylglycine yields the ion-pair copper(II)–neodymium(III) complex, poly[[decaaquabis[μ3-2-({2-[(5-bromo-2-oxidobenzylidene)amino]acetyl}azanidyl)acetato]bis[μ2-2-({2-[(5-bromo-2-oxidobenzylidene)amino]acetyl}azanidyl)acetato]tetracopper(II)dineodymium(III)] bis{[2-({2-[(5-bromo-2-oxidobenzylidene)amino]acetyl}azanidyl)acetato]cuprate(II)} tetradecahydrate], {[Cu4Nd2(C11H8BrN2O4)4(H2O)10][Cu(C11H8BrN2O4)]2·14H2O}n. The anion is planar and mononuclear, showing an approximately square-planar coordination of the metal atom, while the cati

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37

Luo, Hongyan, Shuang Liu, Steven J. Rettig, and Chris Orvig. "Rhenium and technetium complexes from pentadentate (N3O2) and tetradentate (N2O2) Schiff base ligands." Canadian Journal of Chemistry 73, no. 12 (1995): 2272–81. http://dx.doi.org/10.1139/v95-281.

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The rhenium(V) and technetium(V) complexes: [ReO(apa)], [{ReO(epa)}2O], and [TcOCl(epa)] have been prepared from a potentially pentadentate N3O2 ligand, N,N′-3-azapentane-1,5-diylbis(3-(1-iminoethyl)-6-methyl-2H-pyran-2,4(3H)-dione) (H3apa), or a potentially tetradentate N2O2 ligand, N,N′-ethylene-diylbis(3-(1-iminoethyl)-6-methyl-2H-pyran-2,4(3H)-dione) (H2epa). The N2O2 complexes were synthesized in low yields. There was also evidence indicating that H2ppa, N,N′-propylene-diylbis(3-(1-iminoethyl)-6-methyl-2H-pyran-2,4(3H)-dione), hydrolyzed in the course of coordination, forms a rhenium comp

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38

Davis, CA, PA Duckworth, LF Lindoy, and WE Moody. "New Macrocyclic Ligands. VI. 20- to 22-Membered Dibenzo-Substituted Rings Incorporating Mixed Nitrogen, Oxygen and/or Sulfur Donor Atoms." Australian Journal of Chemistry 48, no. 11 (1995): 1819. http://dx.doi.org/10.1071/ch9951819.

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The syntheses and characterization of 10 dibenzo-substituted macrocycles incorporating mixed nitrogen, oxygen and/or sulfur donor sets are reported. The new systems, which incorporate six potential donor sites, extend the range of related (potentially tetradentate and pentadentate) macrocyclic systems reported previously.

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39

Blade, Glenn, Andrew J. Wessel, Karna Terpstra, and Liviu M. Mirica. "Pentadentate and Hexadentate Pyridinophane Ligands Support Reversible Cu(II)/Cu(I) Redox Couples." Inorganics 11, no. 11 (2023): 446. http://dx.doi.org/10.3390/inorganics11110446.

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Two new ligands were synthesized with the goal of copper stabilization, N,N′-(2-methylpyridine)-2,11-diaza[3,3](2,6)pyridinophane (PicN4) and N-(methyl),N′-(2-methylpyridine)-2,11-diaza[3,3](2,6)pyridinophane (PicMeN4), by selective functionalization of HN4 and TsHN4. These two ligands, when reacted with various copper salts, generated both Cu(II) and Cu(I) complexes. These ligands and Cu complexes were characterized by various methods, such as NMR, UV-Vis, MS, and EA. Each compound was also examined electrochemically, and each revealed reversible Cu(II)/Cu(I) redox couples. Additionally, stab

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40

Stritt, Anika, E. Alper Ünal, Elisabeth Irran, and Andreas Grohmann. "“Coordination caps” of graded electron-donor capacity." Zeitschrift für Naturforschung B 79, no. 12 (2024): 705–22. https://doi.org/10.1515/znb-2024-0093.

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Abstract An efficient synthesis of the novel {6-[1,1-di(pyridin-2-yl)ethyl]pyridine-2-yl}2-methyl-1,3-propanediamine (2) is reported, as well as a reliable large-scale synthesis (of the order of 100 g) of previously known 2,2’-[1-(6-chloropyridin-2-yl)ethane-1,1-diyl]dipyridine (4); the latter is the starting material for the preparation of the former, as well as a multitude of other polypodal polyamine/polyimine ligands. Both materials, as well as the intermediates in their multi-step syntheses, have been fully characterised. Ligand 2, in conjunction with ligands 2,2’-(pyridine-2,6-diyl)bis(2

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41

Hoang, Tuyet, Somrita Mondal, Michael B. Allen, et al. "Synthesis and Characterization of Late Transition Metal Complexes of Mono-Acetate Pendant Armed Ethylene Cross-Bridged Tetraazamacrocycles with Promise as Oxidation Catalysts for Dye Bleaching." Molecules 28, no. 1 (2022): 232. http://dx.doi.org/10.3390/molecules28010232.

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Ethylene cross-bridged tetraazamacrocycles are known to produce kinetically stable transition metal complexes that can act as robust oxidation catalysts under harsh aqueous conditions. We have synthesized ligand analogs with single acetate pendant arms that act as pentadentate ligands to Mn, Fe, Co, Ni, Cu, and Zn. These complexes have been synthesized and characterized, including the structural characterization of four Co and Cu complexes. Cyclic voltammetry demonstrates that multiple oxidation states are stabilized by these rigid, bicyclic ligands. Yet, redox potentials of the metal complexe

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42

Bazhenova, Tamara A., Ilya A. Yakushev, Konstantin A. Lyssenko, et al. "Ten-Coordinate Lanthanide [Ln(HL)(L)] Complexes (Ln = Dy, Ho, Er, Tb) with Pentadentate N3O2-Type Schiff-Base Ligands: Synthesis, Structure and Magnetism." Magnetochemistry 6, no. 4 (2020): 60. http://dx.doi.org/10.3390/magnetochemistry6040060.

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A series of five neutral mononuclear lanthanide complexes [Ln(HL)(L)] (Ln = Dy3+, Ho3+ Er3+ and Tb3+) with rigid pentadentate N3O2-type Schiff base ligands, H2LH (1-Dy, 3-Ho, 4-Er and 6-Tb complexes) or H2LOCH3, (2-Dy complex) has been synthesized by reaction of two equivalents of 1,1′-(pyridine-2,6-diyl)bis(ethan-1-yl-1-ylidene))dibenzohydrazine (H2LH, [H2DAPBH]) or 1,1′-(pyridine-2,6-diyl)bis(ethan-1-yl-1-ylidene))di-4-methoxybenzohydrazine (H2LOCH3, [H2DAPMBH]) with common lanthanide salts. The terbium complex [Tb(LH)(NO3)(H2O)2](DME)2 (5-Tb) with one ligand H2LH was also obtained and chara

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43

Rorrer, Leonard C., Stephen D. Hopkins, Michele K. Connors, et al. "A Convenient New Route to Tetradentate and Pentadentate Macrocyclic Tetraamide Ligands." Organic Letters 1, no. 8 (1999): 1157–59. http://dx.doi.org/10.1021/ol990155f.

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44

Chandra, Ramesh. "Uranyl(VI) Complexes of Pyridine-Based Pentadentate Acyclic and Macrocyclic Ligands." Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry 20, no. 5 (1990): 645–59. http://dx.doi.org/10.1080/00945719008048161.

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Otsuka, Masami, Akiyuki Hamasaki, Hiromasa Kurosaki, and Masafumi Goto. "Synthesis, structure of copper(II) complexes of S-containing pentadentate ligands." Journal of Organometallic Chemistry 611, no. 1-2 (2000): 577–85. http://dx.doi.org/10.1016/s0022-328x(00)00397-1.

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Khouba, Z., T. Benabdallah, and U. Maschke. "Spectrophotometric investigation of interaction between iodine and pentadentate Schiff base ligands." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 125 (May 2014): 61–66. http://dx.doi.org/10.1016/j.saa.2014.01.044.

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Pillai, M. R. A., K. Kothari, and S. Jurisson. "Pentadentate chiral amine-phenol ligands: synthesis and radiochemical studies with 99mTc." Applied Radiation and Isotopes 46, no. 9 (1995): 923–27. http://dx.doi.org/10.1016/0969-8043(95)00180-l.

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Albrecht, Markus, Sebastian Mirtschin, Olga Osetska, et al. "Pentadentate Ligands for the 1:1 Coordination of Lanthanide(III) Salts." European Journal of Inorganic Chemistry 2007, no. 20 (2007): 3276–87. http://dx.doi.org/10.1002/ejic.200700222.

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Albrecht, Markus, Sebastian Mirtschin, Olga Osetska, et al. "Pentadentate Ligands for the 1:1 Coordination of Lanthanide(III) Salts." European Journal of Inorganic Chemistry 2008, no. 3 (2008): 491. http://dx.doi.org/10.1002/ejic.200701269.

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Kubono, Koji, Yukiyasu Kashiwagi, Keita Tani та Kunihiko Yokoi. "Crystal structure of (7-{[bis(pyridin-2-ylmethyl)amino-κ³ N,N′,N′′]methyl}-5-chloroquinolin-8-ol)dibromidozinc(II)". Acta Crystallographica Section E Crystallographic Communications 78, № 3 (2022): 326–29. http://dx.doi.org/10.1107/s2056989022001530.

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Abstract:

In the title compound, [ZnBr2(C22H19ClN4O)], the ZnII atom adopts a distorted square-pyramidal coordination geometry, formed by two bromido ligands and three N atoms of the bis(pyridin-2-ylmethyl)amine moiety in the pentadentate ligand containing quinolinol. The ZnII atom is located well above the mean basal plane of the square-based pyramid. The apical position is occupied by a Br atom. The O and N atoms of the quinolinol moiety in the ligand are not coordinated to the ZnII atom. An intramolecular O—H...N hydrogen bond, generating an S(5) ring motif, stabilizes the molecular structure. In the

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