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Статті в журналах з теми "Ligands scorpionates"

Автор: Grafiati

Опубліковано: 29 березня 2025

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1

Petrosian, Artem, Pedro F. Pinheiro, Ana P. C. Ribeiro, Luísa M. D. R. S. Martins, and Gonçalo C. Justino. "The Elusive Biological Activity of Scorpionates: A Useful Scaffold for Cancer Therapy?" Molecules 29, no. 23 (2024): 5672. https://doi.org/10.3390/molecules29235672.

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Cancer remains a formidable challenge, requiring the constant pursuit of novel therapeutic agents and strategies. Scorpionates, known for their unique coordination properties, have recently gained attention for their anticancer potential. Traditionally applied in catalysis, these compounds have demonstrated notable cytotoxicity across various cancer cell lines, often surpassing the efficacy of conventional chemotherapeutics. This review addresses recent findings on scorpionate complexes, emphasizing the impact of metal choice and ligand design on biological activity. Copper and ruthenium scorp

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2

Sirianni, Eric R., Daniel C. Cummins, Glenn P. A. Yap, and Klaus H. Theopold. "FcTp(R) (R=iPr ortBu): third-generation ferrocenyl scorpionates." Acta Crystallographica Section C Structural Chemistry 72, no. 11 (2016): 813–18. http://dx.doi.org/10.1107/s205322961601202x.

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Scorpionate (or trispyrazolylborate) ligands have seen much structural variation due to the relative ease of modifying their electronic and steric effects. Second-generation scorpionates were created by increasing the bulk in the 3-position of the pyrazole (pz) ring. A new class of third-generation scorpionates was obtained by modifying the remaining boron substituent. A series of thallium(I) and cobalt(II) complexes of the ferrocenyltris(3-R-pyrazolyl)borate ligand [FcTpR;R= isopropyl (iPr) ortert-butyl (tBu)] have been synthesized in order to expand the range of redox-active third-generation

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3

Martins, Luísa, Riccardo Wanke, Telma Silva, et al. "Novel Methinic Functionalized and Dendritic C-Scorpionates." Molecules 23, no. 12 (2018): 3066. http://dx.doi.org/10.3390/molecules23123066.

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The study of chelating ligands is undoubtedly one of the most significant fields of research in chemistry. The present work is directed to the synthesis of new functionalized derivatives of tripodal C-scorpionate compounds. Tris-2,2,2-(1-pyrazolyl)ethanol, HOCH2C(pz)3 (1), one of the most important derivatives of hydrotris(pyrazolyl)methane, was used as a building block for the synthesis of new functionalized C-scorpionates, aiming to expand the scope of this unexplored class of compounds. The first dendritic C-scorpionate was successfully prepared and used in the important industrial catalyti

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4

Nicolas, Emmanuel, Thibault Cheisson, G. Bas de Jong, Cornelis G. J. Tazelaar, and J. Chris Slootweg. "A new synthetic route to the electron-deficient ligand tris(3,4,5-tribromopyrazol-1-yl)phosphine oxide." Acta Crystallographica Section C Structural Chemistry 72, no. 11 (2016): 846–49. http://dx.doi.org/10.1107/s2053229616015035.

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The anionic tris(pyrazolyl)borates, or scorpionates, have proven to be extremely useful ligands. Neutral tris(pyrazolyl)methane ligands, however, are difficult to prepare and require numerous purification steps for a number of substitution patterns. We have previously outlined two different routes for accessing neutral tris(pyrazolyl) ligands. We describe here an adaptation of the previously published procedures for the synthesis of the electron-poor ligand tris(3,4,5-tribromopyrazol-1-yl)phosphine oxide, C9Br9N6OP. Similar electron-deficient ligands have been proven to unlock unique chemistry

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5

Takayama, Tomoaki, Jun Nakazawa, and Shiro Hikichi. "A pseudotetrahedral nickel(II) complex with a tridentate oxazoline-based scorpionate ligand: chlorido[tris(4,4-dimethyloxazolin-2-yl)phenylborato]nickel(II)." Acta Crystallographica Section C Structural Chemistry 72, no. 11 (2016): 842–45. http://dx.doi.org/10.1107/s2053229616012183.

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Poly(pyrazol-1-yl)borates have been utilized extensively in coordination compounds due to their high affinity toward cationic metal ions on the basis of electrostatic interactions derived from the mononegatively charged boron centre. The original poly(pyrazol-1-yl)borates, christened `scorpionates', were pioneered by the late Professor Swiatoslaw Trofimenko and have expanded to include various borate ligands with N-, P-, O-, S-, Se- and C-donors. Scorpionate ligands with boron–carbon bonds, rather than the normal boron–nitrogen bonds, have been developed and in these new types of scorpionate l

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6

Wang, Guocang, Anurag Noonikara-Poyil, Israel Fernández, and H. V. Rasika Dias. "Iron pentacarbonyl ligands on silver scorpionates." Chemical Communications 58, no. 19 (2022): 3222–25. http://dx.doi.org/10.1039/d1cc06859h.

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7

Andrade, Marta A., and Luísa M. D. R. S. Martins. "Novel Chemotherapeutic Agents - The Contribution of Scorpionates." Current Medicinal Chemistry 26, no. 41 (2020): 7452–75. http://dx.doi.org/10.2174/0929867325666180914104237.

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: The development of safe and effective chemotherapeutic agents is one of the uppermost priorities and challenges of medicinal chemistry and new transition metal complexes are being continuously designed and tested as anticancer agents. Scorpionate ligands have played a great role in coordination chemistry, since their discovery by Trofimenko in the late 1960s, with significant contributions in the fields of catalysis and bioinorganic chemistry. Scorpionate metal complexes have also shown interesting anticancer properties, and herein, the most recent (last decade) and relevant scorpionate comp

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8

Gardinier, James R., Alex R. Treleven, Kristin J. Meise, and Sergey V. Lindeman. "Accessing spin-crossover behaviour in iron(ii) complexes of N-confused scorpionate ligands." Dalton Transactions 45, no. 32 (2016): 12639–43. http://dx.doi.org/10.1039/c6dt01898j.

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9

Goldsworthy, Joseph, Simon D. Thomas, Graham J. Tizzard, Simon J. Coles, and Gareth R. Owen. "Adding to the Family of Copper Complexes Featuring Borohydride Ligands Based on 2-Mercaptopyridyl Units." Inorganics 7, no. 8 (2019): 93. http://dx.doi.org/10.3390/inorganics7080093.

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Borohydride ligands featuring multiple pendant donor functionalities have been prevalent in the chemical literature for many decades now. More recent times has seen their development into new families of so-called soft scorpionates, for example, those featuring sulfur based donors. Despite all of these developments, those ligands containing just one pendant group are rare. This article explores one ligand family based on the 2-mercaptopyridine heterocycle. The coordination chemistry of the monosubstituted ligand, [H3B(mp)]− (mp = 2-mercaptopyridyl), has been explored. Reaction of Na[BH3(mp)] w

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10

Trofimenko, Swiatoslaw, Fernando Jové, and Glenn P. A. Yap. "An unusual bis-heteroscorpionate complex with anomalous ligands: [tris(3,4-dibromo-5-phenylpyrazolyl)hydroborato][hydrotris(3-neopentylpyrazolyl)borato]nickel(II)." Acta Crystallographica Section C Structural Chemistry 72, no. 11 (2016): 802–5. http://dx.doi.org/10.1107/s2053229616001376.

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Tridentate trispyrazolylborate (Tp) ligands, introduced by Trofimenko in 1966, have been widely utilized in metal coordination chemistry because of the relatively facile synthetic modification of their electronic and steric factors. The title heteroscorpionate, [Ni(C27H16BBr6N6)(C24H40BN6)], features one ligand, namely hydrotris(3-neopentylpyrazolyl)borate, that has previously displayed variable steric effects, and a brominated ligand, namely tris(3,4-dibromo-5-phenylpyrazolyl)hydroborate, that, atypical in trispyrazolylborate chemistry, coordinates such that the less bulky pyrazole substituen

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11

Pettinari, Claudio, Augusto Cingolani, Giancarlo Gioia Lobbia, et al. "Copper and silver derivatives of scorpionates and related ligands." Polyhedron 23, no. 2-3 (2004): 451–69. http://dx.doi.org/10.1016/j.poly.2003.11.033.

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12

Su, Wei-Jia, and Lan-Chang Liang. "Elusive Scorpionates: C3-Symmetric, Formally Dianionic, Facially Tridentate Ligands." Inorganic Chemistry 57, no. 2 (2017): 553–56. http://dx.doi.org/10.1021/acs.inorgchem.7b02884.

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13

Dias, H. V. Rasika, and Naveen Kulkarni. "The silver(I) complex [HB{3-(CF3),5-(CH3)Pz}3]AgNCCH3supported by a partially fluorinated scorpionate ligand." Acta Crystallographica Section C Structural Chemistry 72, no. 11 (2016): 853–56. http://dx.doi.org/10.1107/s2053229616006744.

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Tris(pyrazolyl)borates are used extensively in metal coordination chemistry and belong to a class of ligands generally referred to as scorpionates. The steric and electronic properties of these ligands can be modified quite easily by varying the substituents on the 3-, 4-, and 5-positions of the pyrazolyl moieties on the B atom. Fluorinated tris(pyrazolyl)borates are useful in the stabilization of rare silver(I) complexes. The silver(I) adduct (acetonitrile-κN){tris[5-methyl-3-(trifluoromethyl)pyrazol-1-yl-κN2]hydroborato}silver(I), [Ag(C15H13BF9N6)(CH3CN)] or [HB{3-(CF3),5-(CH3)Pz}3]AgNCCH3,

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14

Edelmann, Frank T. "Versatile Scorpionates—New Developments in the Coordination Chemistry of Pyrazolylborate Ligands." Angewandte Chemie International Edition 40, no. 9 (2001): 1656–60. http://dx.doi.org/10.1002/1521-3773(20010504)40:9<1656::aid-anie16560>3.0.co;2-q.

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15

Wang, Denan, James R. Gardinier, and Sergey V. Lindeman. "Iron(ii) tetrafluoroborate complexes of new tetradentate C-scorpionates as catalysts for the oxidative cleavage of trans-stilbene with H2O2." Dalton Transactions 48, no. 38 (2019): 14478–89. http://dx.doi.org/10.1039/c9dt02829c.

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16

Edelmann, Frank T. "ChemInform Abstract: Versatile Scorpionates - New Developments in the Coordination Chemistry of Pyrazolylborate Ligands." ChemInform 32, no. 34 (2010): no. http://dx.doi.org/10.1002/chin.200134137.

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17

Meinholz, Margret M., Sushil K. Pandey, Stephan M. Deuerlein, and Dietmar Stalke. "Access to new Janus head ligands: linking sulfur diimides and phosphanes for hemilabile tripodal scorpionates." Dalton Transactions 40, no. 8 (2011): 1662. http://dx.doi.org/10.1039/c0dt00665c.

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18

Infantes, Lourdes, Rosa M. Claramunt, Dionisia Sanz, Ibon Alkorta, and José Elguero. "The structures of two scorpionates: thallium tetrakis(3-phenyl-1H-pyrazol-1-yl)borate and potassium tetrakis(3-cyclopropyl-1H-pyrazol-1-yl)borate." Acta Crystallographica Section C Structural Chemistry 72, no. 11 (2016): 819–25. http://dx.doi.org/10.1107/s2053229616007385.

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The introduction of poly(1H-pyrazolyl)borate anions, better known as scorpionates, as negatively charged ligands for a great diversity of metal cations has had a tremendous influence in coordination chemistry. The structures of two salts of tetrakispyrazolylborate, namely [tetrakis(3-phenyl-1H-pyrazol-1-yl)borato]thallium(I), [Tl(C36H28BN8)], andcatena-poly[potassium-[μ2-tetrakis(3-cyclopropyl-1H-pyrazol-1-yl)borato]], [K(C24H28BN8)]n, have been determined at 296 K in the monoclinicP21/candC2/cspace groups, respectively. In their crystal structures, the thallium salt presents discrete molecula

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19

Bailey, Philip J., Nicola L. Bell, Lim Li Gim, et al. "“Twisted” scorpionates: synthesis of a tris(2-pyridonyl)borate (Thp) ligand; lessons in the requirements for successful B(L2D)3 type ligands." Chemical Communications 47, no. 42 (2011): 11659. http://dx.doi.org/10.1039/c1cc14473a.

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20

Otero, Antonio, Juan Fernández-Baeza, Agustín Lara-Sánchez та ін. "Versatile Scorpionates and New Developments in the Denticity Changes of NNCp Hybrid Scorpionate/Cyclopentadienyl Ligands in Sc and Y Compounds: From κ1-Nη5-Cp to κ2-NNη5-Cp". Inorganic Chemistry 47, № 11 (2008): 4996–5005. http://dx.doi.org/10.1021/ic800267v.

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21

Plasseraud, Laurent, and Hélène Cattey. "s-Block metal scorpionates – A new sodium hydrido-tris(3,5-dimethyl-1-pyrazolyl)borate salt showing an unusual core stabilized by bridging and terminal O-bonded DMSO ligands." Main Group Metal Chemistry 43, no. 1 (2020): 102–10. http://dx.doi.org/10.1515/mgmc-2020-0012.

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AbstractDissolution of [(μ-Me2CO)3(NaTp*)2] (1) (Tp* = hydrido-tris(3,5-dimethyl-1-pyrazolyl)borate) in DMSO at room temperature leads to the growth of colourless crystals characterized as the new salt [Na2Tp*(μ-Me2SO)3(Me2SO)3] [NaTp*2] (2). 2 crystallized in the trigonal space group R3 with Z = 3, a = 14.1227(2) Å, b = 14.1227(10) Å, c = 33.9685(2) Å, and V = 5867.35(17) Å3. Interestingly, anion and cation of 2 both contain the Tp* ligand. Moreover, the cationic moiety highlights an unusual sodium atom hexacoordinated by six DMSO molecules acting as O-bonded ligands. Three of which exhibit a

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22

Cummins, Daniel C., Glenn P. A. Yap, and Klaus H. Theopold. "Scorpionates of the “Tetrahedral Enforcer” Variety as Ancillary Ligands for Dinitrogen Complexes of First Row Transition Metals (Cr-Co)." European Journal of Inorganic Chemistry 2016, no. 15-16 (2016): 2349–56. http://dx.doi.org/10.1002/ejic.201501326.

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23

Pellei, Maura, Grazia Papini, Giancarlo Gioia Lobbia, et al. "Scorpionates bearing nitro substituents: mono-, bis- and tris-(3-nitro-pyrazol-1-yl)borate ligands and their copper(i) complexes." Dalton Transactions 39, no. 38 (2010): 8937. http://dx.doi.org/10.1039/c0dt00474j.

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24

Green, William L., Eric R. Sirianni, Glenn P. A. Yap, and Charles G. Riordan. "Steric and electronic factor comparisons in hydrotris(3-phenylpyrazolyl)borate nickel(II) aryloxides." Acta Crystallographica Section C Structural Chemistry 72, no. 11 (2016): 791–96. http://dx.doi.org/10.1107/s2053229616001789.

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Hydrotris(pyrazolyl)borate (Tp) ligands, also known as scorpionates, are potent tridentate donors that effectively bind metal ions in a face-capping array. Hydrotris(3-phenylpyrazolyl)borate enforces a tetrahedral environment on NiIIto model metalloenzymes. The syntheses and structural characterizations of a number of [hydrotris(3-phenylpyrazolyl)borato]nickel(II) aryloxides were performed to provide insight into the environment of the model active site; these compounds are chlorido[hydrotris(3-phenylpyrazolyl-κN2)borato](3-phenyl-1H-pyrazole-κN2)nickel(II) chloroform monosolvate, [Ni(C27H22BN

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25

Kunz, Kerstin, Michael Bolte, Hans-Wolfram Lerner, and Matthias Wagner. "Photochemistry of Cymantrenyl Scorpionates: Formation of a Novel Tritopic Cyclopentadienyl/Scorpionate Hybrid Ligand." Organometallics 28, no. 10 (2009): 3079–87. http://dx.doi.org/10.1021/om900190r.

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26

Jackson, Miriam, Simon D. Thomas, Graham J. Tizzard, Simon J. Coles, and Gareth R. Owen. "Synthesis and Structural Characterization of Copper Complexes Containing “R-Substituted” Bis-7-Azaindolyl Borate Ligands." Molecules 28, no. 12 (2023): 4825. http://dx.doi.org/10.3390/molecules28124825.

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The coordination chemistry of scorpionate ligands based on borates containing the 7-azaindole heterocycle is relatively unexplored. Thus, there is a requirement to further understand their coordination chemistry. This article outlines the synthesis and characterization of a family of complexes containing anionic flexible scorpionate ligands of the type [(R)(bis-7-azaindolyl)borohydride]− ([RBai]−), where R = Me, Ph or naphthyl. The three ligands were coordinated to a series of copper(I) complexes containing a phosphine co-ligand to form the complexes, [Cu(MeBai)(PPh3)] (1), [Cu(PhBai)(PPh3)] (

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27

Tăbăcaru, Aurel, Rais Ahmad Khan, Giulio Lupidi, and Claudio Pettinari. "Synthesis, Characterization and Assessment of the Antioxidant Activity of Cu(II), Zn(II) and Cd(II) Complexes Derived from Scorpionate Ligands." Molecules 25, no. 22 (2020): 5298. http://dx.doi.org/10.3390/molecules25225298.

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Seeking to enrich the yet less explored field of scorpionate complexes bearing antioxidant properties, we, here, report on the synthesis, characterization and assessment of the antioxidant activity of new complexes derived from three scorpionate ligands. The interaction between the scorpionate ligands thallium(I) hydrotris(5-methyl-indazolyl)borate (TlTp4Bo,5Me), thallium(I) hydrotris(4,5-dihydro-2H-benzo[g]indazolyl)borate (TlTpa) and potassium hydrotris(3-tert-butyl- pyrazolyl)borate (KTptBu), and metal(II) chlorides, in dichloromethane at room temperature, produced a new family of complexes

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28

Martini, Petra, Micol Pasquali, Alessandra Boschi, Licia Uccelli, Melchiore Giganti, and Adriano Duatti. "Technetium Complexes and Radiopharmaceuticals with Scorpionate Ligands." Molecules 23, no. 8 (2018): 2039. http://dx.doi.org/10.3390/molecules23082039.

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Scorpionate ligands have played a crucial role in the development of technetium chemistry and, recently, they have also fueled important advancements in the discovery of novel diagnostic imaging agents based on the γ-emitting radionuclide technetium-99m. The purpose of this short review is to provide an illustration of the most general and relevant results in this field, however without being concerned with the details of the analytical features of the various compounds. Thus, emphasis will be given to the description of the general features of technetium complexes with scorpionate ligands inc

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29

Akef Ibrahim Alhmaideen, Akef Ibrahim Alhmaideen, Hamzeh M. Abdel Halim Hamzeh M Abdel Halim, and Assala A. Al Twal and Adnan S. Abu Surrah Assala A Al Twal and Adnan S Abu Surrah. "Synthesis of New Series of Transition Metal Complexes with Poly (Pyrazolyl) Borates." Journal of the chemical society of pakistan 45, no. 4 (2023): 294. http://dx.doi.org/10.52568/001289/jcsp/45.04.2023.

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In structuring catalysis enzyme and chemistry, tridentate ligands and Scorpionate ligands are of significant worth. This study presents the synthesis of a tris(pyrazolyl)borate ligand to be utilized in transition metal complexes as possible redox shuttles. Complexes of general formula [AgTp], [MIIITp (Cl2)] (M = Fe, Co), Tp = tri (1-pyrazolyl) borohydride and [AgTp*], [FeIIITp*(Cl2)], Tp* = tris (3, 5-dimethyl-1-pyrazolyl) borohydride were synthesized and characterized in solid state. The Tp ligands were considered triply coordinated with the metal center with two bounded chloride atoms as per

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30

Smith, Jeremy M. "STRONGLY DONATING SCORPIONATE LIGANDS." Comments on Inorganic Chemistry 29, no. 5-6 (2008): 189–233. http://dx.doi.org/10.1080/02603590802590080.

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31

., Eishika, Himani ., and Ridhi . "Review of Synthesis and Characterization of Cu (I) Complexes." International Journal of Research and Review 11, no. 1 (2024): 195–209. http://dx.doi.org/10.52403/ijrr.20240121.

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d-block metals show great promise in inorganic catalytic research. Particularly, copper, d9 metal has contributed to catalytic properties of its complexes. A series of copper complexes was synthesized and structurally characterized. The copper (I) complexes of this series were investigated in regard to their reactivity towards dioxygen using stopped-flow techniques. For most complexes no “oxygen adduct” complexes as intermediates could be detected. In this article, some complexes of Cu (I) have been included and the ligands on which work had been done are mentioned below: 1,5-bis(benzimidazole

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32

Albertin, Gabriele, Stefano Antoniutti, Marco Bortoluzzi, Jesús Castro, and Lidia Marzaro. "Diazoalkane complexes of ruthenium with tris(pyrazolyl)borate and bis(pyrazolyl)acetate ligands." Dalton Transactions 44, no. 35 (2015): 15470–80. http://dx.doi.org/10.1039/c5dt02113h.

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33

Duriska, M. B., S. R. Batten, J. Lu, et al. "Crystal engineering with scorpionate ligands." Acta Crystallographica Section A Foundations of Crystallography 61, a1 (2005): c356. http://dx.doi.org/10.1107/s0108767305084850.

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34

Rheingold, Arnold L., Brian S. Haggerty, Louise M. Liable-Sands, and Swiatoslaw Trofimenko. "N,O-Polydentate Scorpionate Ligands." Inorganic Chemistry 38, no. 26 (1999): 6306–8. http://dx.doi.org/10.1021/ic990881e.

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35

Tüchler, Michael, Melanie Ramböck, Simon Glanzer, Klaus Zangger, Ferdinand Belaj, and Nadia Mösch-Zanetti. "Mono- and Hexanuclear Zinc Halide Complexes with Soft Thiopyridazine Based Scorpionate Ligands." Inorganics 7, no. 2 (2019): 24. http://dx.doi.org/10.3390/inorganics7020024.

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Scorpionate ligands with three soft sulfur donor sites have become very important in coordination chemistry. Despite its ability to form highly electrophilic species, electron-deficient thiopyridazines have rarely been used, whereas the chemistry of electron-rich thioheterocycles has been explored rather intensively. Here, the unusual chemical behavior of a thiopyridazine (6-tert-butylpyridazine-3-thione, HtBuPn) based scorpionate ligand towards zinc is reported. Thus, the reaction of zinc halides with tris(6-tert-butyl-3-thiopyridazinyl)borate Na[TntBu] leads to the formation of discrete toru

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36

Suter, Riccardo, Mona Wagner, Lorenzo Querci, Riccardo Conti, Zoltán Benkő, and Hansjörg Grützmacher. "1,3,4-Azadiphospholides as building blocks for scorpionate and bidentate ligands in multinuclear complexes." Dalton Transactions 49, no. 24 (2020): 8201–8. http://dx.doi.org/10.1039/d0dt01864c.

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37

Yoshida, Jun, Keisuke Sugawara, Hidetaka Yuge, and Jun Okabayashi. "Bis(acetylacetonato)bis(pyrazolato)ruthenate(iii) as a redox-active scorpionate ligand." Dalton Trans. 43, no. 42 (2014): 16066–73. http://dx.doi.org/10.1039/c4dt02331e.

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38

Dias, H. V. Rasika, Simone Alidori, Giancarlo Gioia Lobbia, Grazia Papini, Maura Pellei, and Carlo Santini. "Small Scorpionate Ligands: Silver(I)-Organophosphane Complexes of 5-CF3-Substituted Scorpionate Ligand Combining a B−H···Ag Coordination Motif." Inorganic Chemistry 46, no. 23 (2007): 9708–14. http://dx.doi.org/10.1021/ic701041k.

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39

Zhang, Fan, Thorsten Morawitz, Susanne Bieller, Michael Bolte, Hans-Wolfram Lerner, and Matthias Wagner. "Metallomacrocycles from ditopic chiral scorpionate ligands." Dalton Transactions, no. 40 (2007): 4594. http://dx.doi.org/10.1039/b707807b.

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40

Thomas, Jarrod R., and Scott A. Sulway. "In situ tracking and characterisation of scorpionate ligands via11B-NMR spectroscopy." RSC Advances 11, no. 27 (2021): 16158–60. http://dx.doi.org/10.1039/d0ra10826j.

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41

Olyshevets, Iryna, Vladimir Ovchynnikov, Nataliia Kariaka, et al. "Lanthanide complexes based on a new bis-chelating carbacylamidophosphate (CAPh) scorpionate-like ligand." RSC Advances 10, no. 42 (2020): 24808–16. http://dx.doi.org/10.1039/d0ra04714g.

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42

Manna, Fabio, Mariangela Oggianu, Valentina Mameli, et al. "Thiophenyl Anilato-Based NIR-Emitting Lanthanide (LnIII = Er, Yb) Dinuclear Complexes." Molecules 29, no. 23 (2024): 5804. https://doi.org/10.3390/molecules29235804.

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Анотація:

By combining ErIII and YbIII ions with 3,6-dithiophene-anilate (Th2An) and scorpionate hydrotris(pyrazol-1-yl)borate (HBpz3−) ligands new luminescent dinuclear complexes are obtained. The two materials formulated as [((HB(pz)3)2Yb)2(μ-th2An)]·4DCM·1.3H2O 1Yb and [((HB(pz)3)2Er)2(μ-th2An)]·4DCM·1.8H2O 1Er, respectively, have been structurally characterized by SC-XRD and PXRD studies. This study presents a comprehensive investigation of the photophysical properties of the Th2An ligand for the first time. Our findings reveal the crucial role of the thiophene anilate as an effective optical antenn

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43

Tretiakov, Serhii, Johannes A. M. Damen, Martin Lutz, and Marc-Etienne Moret. "A dianionic C3-symmetric scorpionate: synthesis and coordination chemistry." Dalton Transactions 49, no. 39 (2020): 13549–56. http://dx.doi.org/10.1039/d0dt02601h.

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44

Bussey, Katherine A., Annie R. Cavalier, Jennifer R. Connell та ін. "Crystal structure of orthorhombic {bis[(pyridin-2-yl)methyl](3,5,5,5-tetrachloropentyl)amine-κ3N,N′,N′′}chloridocopper(II) perchlorate". Acta Crystallographica Section E Crystallographic Communications 71, № 7 (2015): 847–51. http://dx.doi.org/10.1107/s2056989015011792.

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In the title compound, [CuCl(C17H19Cl4N3)]ClO4, the CuIIion adopts a distorted square-planar geometry defined by one chloride ligand and the three nitrogen atoms from the bis[(pyridin-2-yl)methyl](3,5,5,5-tetrachloropentyl)amine ligand. The perchlorate counter-ion is disordered over three sets of sites with refined occupancies 0.0634 (17), 0.221 (16) and 0.145 (7). In addition, the hetero-scorpionate arm of the bis[(pyridin-2-yl)methyl](3,5,5,5-tetrachloropentyl)amine ligand is disordered over two sets of sites with refined occupancies 0.839 (2) and 0.161 (2). In the crystal, weak Cu...Cl inte

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45

Da Costa, Rosenildo Correa, Benjamin W. Rawe, Nikolaos Tsoureas, et al. "Preparation and reactivity of rhodium and iridium complexes containing a methylborohydride based unit supported by two 7-azaindolyl heterocycles." Dalton Transactions 47, no. 32 (2018): 11047–57. http://dx.doi.org/10.1039/c8dt02311e.

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46

Dyson, Gavin, Alexander Zech, Benjamin W. Rawe, Mairi F. Haddow, Alexander Hamilton, and Gareth R. Owen. "Scorpionate Ligands Based on 2-Mercaptopyridine: A Ligand with a Greater Propensity To Sting?" Organometallics 30, no. 21 (2011): 5844–50. http://dx.doi.org/10.1021/om200694r.

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47

Matveeva, Anna G., Anna V. Vologzhanina, Evgenii I. Goryunov, et al. "Extraction and coordination studies of a carbonyl–phosphine oxide scorpionate ligand with uranyl and lanthanide(iii) nitrates: structural, spectroscopic and DFT characterization of the complexes." Dalton Transactions 45, no. 12 (2016): 5162–79. http://dx.doi.org/10.1039/c5dt04963f.

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48

Fujisawa, Kiyoshi, Masaya Shimizu, and Robert K. Szilagyi. "Comparison of thallium(I) complexes with mesityl-substituted tris(pyrazolyl)hydroborate ligands, [Tl{HB(3-Ms-5-Mepz)3}] and [Tl{HB(3-Ms-5-Mepz)2(3-Me-5-Mspz)}]." Acta Crystallographica Section C Structural Chemistry 72, no. 11 (2016): 786–90. http://dx.doi.org/10.1107/s2053229615023797.

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Анотація:

Tris(pyrazolyl)borate (scorpionate) ligands can be considered as the most prolific ligands in contemporary coordination chemistry due to the availability of various steric and electronic substituents at the pyrazolyl rings that allow fine-tuning of the open-coordination site for metal centres. The thallium(I) complexes of anionic tridentate-chelating scorpionate ligands, namely [tris(3-mesityl-5-methyl-1H-pyrazol-1-yl-κN2)hydroborato]thallium(I) monohydrate, [Tl(C39H46BN6)]·H2O, (I), and [bis(3-mesityl-5-methyl-1H-pyrazol-1-yl-κN2)(5-mesityl-3-methyl-1H-pyrazol-1-yl-κN2)hydroborato]thallium(I)

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49

Colmer, Hannah E., Robert A. Geiger, Domenick F. Leto, Gayan B. Wijeratne, Victor W. Day, and Timothy A. Jackson. "Geometric and electronic structure of a peroxomanganese(iii) complex supported by a scorpionate ligand." Dalton Trans. 43, no. 48 (2014): 17949–63. http://dx.doi.org/10.1039/c4dt02483d.

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Анотація:

A peroxomanganese(iii) species with a scorpionate (Tp) ligand is characterized by X-ray crystallography, electron paramagnetic resonance, and magnetic circular dichroism spectroscopy, revealing a distinct electronic structure.

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50

Naktode, Kishor, Th Dhileep N. Reddy, Hari Pada Nayek, Bhabani S. Mallik, and Tarun K. Panda. "Heavier group 2 metal complexes with a flexible scorpionate ligand based on 2-mercaptopyridine." RSC Advances 5, no. 63 (2015): 51413–20. http://dx.doi.org/10.1039/c5ra04696c.

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Анотація:

Synthetic and structural details of flexible scorpionate ligand based on 2-mercaptopyridine (Bmp) supported heavier alkaline earth metal complexes with metal–sulfur bonds (metal = Sr, Ba) have been presented.

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