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O’Dowd PD, Guerrero AS, Alley KR, Pigg HC, O’Neill F, Meiller J, Hobbs C, Rodrigues DA, Twamley B, O’Sullivan F, DeRose VJ, Griffith DM. Click-Capable Phenanthriplatin Derivatives as Tools to Study Pt(II)-Induced Nucleolar Stress. ACS Chem Biol 2024; 19:875-885. [PMID: 38483263 PMCID: PMC11040607 DOI: 10.1021/acschembio.3c00607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 02/20/2024] [Accepted: 02/23/2024] [Indexed: 04/20/2024]
Abstract
It is well established that oxaliplatin, one of the three Pt(II) anticancer drugs approved worldwide, and phenanthriplatin, an important preclinical monofunctional Pt(II) anticancer drug, possess a different mode of action from that of cisplatin and carboplatin, namely, the induction of nucleolar stress. The exact mechanisms that lead to Pt-induced nucleolar stress are, however, still poorly understood. As such, studies aimed at better understanding the biological targets of both oxaliplatin and phenanthriplatin are urgently needed to expand our understanding of Pt-induced nucleolar stress and guide the future design of Pt chemotherapeutics. One approach that has seen great success in the past is the use of Pt-click complexes to study the biological targets of Pt drugs. Herein, we report the synthesis and characterization of the first examples of click-capable phenanthriplatin complexes. Furthermore, through monitoring the relocalization of nucleolar proteins, RNA transcription levels, and DNA damage repair biomarker γH2AX, and by investigating their in vitro cytotoxicity, we show that these complexes successfully mimic the cellular responses observed for phenanthriplatin treatment in the same experiments. The click-capable phenanthriplatin derivatives described here expand the existing library of Pt-click complexes. Significantly they are suitable for studying nucleolar stress mechanisms and further elucidating the biological targets of Pt complexes.
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Affiliation(s)
- Paul D. O’Dowd
- Department
of Chemistry, Royal College of Surgeons
in Ireland, Dublin D02 YN77, Ireland
- SSPC, The Science Foundation Ireland Research
Centre for
Pharmaceuticals, Limerick V94 T9PX, Ireland
| | - Andres S. Guerrero
- Department
of Chemistry and Biochemistry, University
of Oregon, Eugene, Oregon 97403, United States
| | - Katelyn R. Alley
- Department
of Chemistry and Biochemistry, University
of Oregon, Eugene, Oregon 97403, United States
| | - Hannah C. Pigg
- Department
of Chemistry and Biochemistry, University
of Oregon, Eugene, Oregon 97403, United States
| | - Fiona O’Neill
- Life
Science Institute, Dublin City University, Dublin D09 V209, Ireland
| | - Justine Meiller
- Life
Science Institute, Dublin City University, Dublin D09 V209, Ireland
| | - Chloe Hobbs
- Department
of Chemistry, Royal College of Surgeons
in Ireland, Dublin D02 YN77, Ireland
| | - Daniel A. Rodrigues
- Department
of Chemistry, Royal College of Surgeons
in Ireland, Dublin D02 YN77, Ireland
| | - Brendan Twamley
- Department
of Chemistry, Trinity College Dublin, Dublin D02 PN40, Ireland
| | - Finbarr O’Sullivan
- Life
Science Institute, Dublin City University, Dublin D09 V209, Ireland
| | - Victoria J. DeRose
- Department
of Chemistry and Biochemistry, University
of Oregon, Eugene, Oregon 97403, United States
| | - Darren M. Griffith
- Department
of Chemistry, Royal College of Surgeons
in Ireland, Dublin D02 YN77, Ireland
- SSPC, The Science Foundation Ireland Research
Centre for
Pharmaceuticals, Limerick V94 T9PX, Ireland
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Guerrero AS, O'Dowd PD, Pigg HC, Alley KR, Griffith DM, DeRose VJ. Comparison of click-capable oxaliplatin and cisplatin derivatives to better understand Pt(ii)-induced nucleolar stress. RSC Chem Biol 2023; 4:785-793. [PMID: 37799581 PMCID: PMC10549245 DOI: 10.1039/d3cb00055a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 08/16/2023] [Indexed: 10/07/2023] Open
Abstract
Pt(ii) chemotherapeutic complexes have been used as predominant anticancer drugs for nearly fifty years. Currently there are three FDA-approved chemotherapeutic Pt(ii) complexes: cisplatin, carboplatin, and oxaliplatin. Until recently, it was believed that all three complexes induced cellular apoptosis through the DNA damage response pathway. Studies within the last decade, however, suggest that oxaliplatin may instead induce cell death through a unique nucleolar stress pathway. Pt(ii)-induced nucleolar stress is not well understood and further investigation of this pathway may provide both basic knowledge about nucleolar stress as well as insight for more tunable Pt(ii) chemotherapeutics. Through a previous structure-function analysis, it was determined that nucleolar stress induction is highly sensitive to modifications at the 4-position of the 1,2-diaminocyclohexane (DACH) ring of oxaliplatin. Specifically, more flexible and less rigid substituents (methyl, ethyl, propyl) induce nucleolar stress, while more rigid and bulkier substituents (isopropyl, acetamide) do not. These findings suggest that a click-capable functional group can be installed at the 4-position of the DACH ring while still inducing nucleolar stress. Herein, we report novel click-capable azide-modified oxaliplatin mimics that cause nucleolar stress. Through NPM1 relocalization, fibrillarin redistribution, and γH2AX studies, key differences have been identified between previously studied click-capable cisplatin mimics and these novel click-capable oxaliplatin mimics. These complexes provide new tools to identify cellular targets and localization through post-treatment Cu-catalyzed azide-alkyne cycloaddition and may help to better understand Pt(ii)-induced nucleolar stress. To our knowledge, these are the first reported oxaliplatin mimics to include an azide handle, and cis-[(1R,2R,4S) 4-methylazido-1,2-cyclohexanediamine]dichlorido platinum(ii) is the first azide-functionalized oxaliplatin derivative to induce nucleolar stress.
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Affiliation(s)
- Andres S Guerrero
- Department of Chemistry and Biochemistry, University of Oregon Eugene OR USA
| | - Paul D O'Dowd
- Department of Chemistry, RCSI Dublin Ireland
- SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals Ireland
| | - Hannah C Pigg
- Department of Chemistry and Biochemistry, University of Oregon Eugene OR USA
| | - Katelyn R Alley
- Department of Chemistry and Biochemistry, University of Oregon Eugene OR USA
| | - Darren M Griffith
- Department of Chemistry, RCSI Dublin Ireland
- SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals Ireland
| | - Victoria J DeRose
- Department of Chemistry and Biochemistry, University of Oregon Eugene OR USA
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3
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La Manna S, Roviello V, Monaco V, Platts JA, Monti M, Gabano E, Ravera M, Marasco D. The inhibitory effects of platinum(II) complexes on amyloid aggregation: a theoretical and experimental approach. Dalton Trans 2023; 52:12677-12685. [PMID: 37655459 DOI: 10.1039/d3dt02187d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Platinum (Pt)(II) square planar complexes are well-known anticancer drugs whose Mechanism of Action (MOA) are finely tuned by the polar, hydrophobic and aromatic features of the ligands. In the attempt to translate this tunability to the identification of potential neurodrugs, herein, four Pt(II) complexes were investigated in their ability to modulate the self-aggregation processes of two amyloidogenic models: Sup35p7-13 and NPM1264-277 peptides. In particular, phenanthriplatin revealed the most efficient agent in the modulation of amyloid aggregation: through several biophysical assays, as Thioflavin T (ThT), electrospray ionization mass spectrometry (ESI-MS) and ultraviolet-visible (UV-vis) absorption spectroscopy, this complex revealed able to markedly suppress aggregation and to disassemble small soluble aggregates. This effect was due to a direct coordination of phenanthriplatin to the amyloid, with the loss of several ligands and different stoichiometries, by the formation of π-π and π-cation interactions as indicated from molecular dynamic simulations. Presented data support a growing and recent approach concerning the repurposing of metallodrugs as potential novel neurotherapeutics.
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Affiliation(s)
- Sara La Manna
- Department of Pharmacy, University of Naples Federico II, 80131, Naples, Italy.
| | - Valentina Roviello
- Department of Chemical, Materials, and Industrial Production Engineering (DICMaPI), University of Naples Federico II, 80125 Naples, Italy
| | - Vittoria Monaco
- Department of Chemical Sciences, University of Naples Federico II, 80126, Naples, Italy
- CEINGE Biotecnologie Avanzate "Franco Salvatore" S.c.a r.l., 80131, Naples, Italy
| | - James A Platts
- School of Chemistry, Cardiff University, Park Place, Cardiff, CF10 3AT, UK
| | - Maria Monti
- Department of Chemical Sciences, University of Naples Federico II, 80126, Naples, Italy
- CEINGE Biotecnologie Avanzate "Franco Salvatore" S.c.a r.l., 80131, Naples, Italy
| | - Elisabetta Gabano
- Dipartimento per lo Sviluppo Sostenibile e la Transizione Ecologica, University of Piemonte Orientale, Piazza S. Eusebio 5, 13100, Vercelli, Italy
| | - Mauro Ravera
- Department of Sciences and Technological Innovation, University of Piemonte Orientale, Viale Michel 11, 15121 Alessandria, Italy
| | - Daniela Marasco
- Department of Pharmacy, University of Naples Federico II, 80131, Naples, Italy.
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Mitchell RJ, Kriger SM, Fenton AD, Havrylyuk D, Pandeya A, Sun Y, Smith T, DeRouchey JE, Unrine JM, Oza V, Blackburn JS, Wei Y, Heidary DK, Glazer EC. A monoadduct generating Ru(ii) complex induces ribosome biogenesis stress and is a molecular mimic of phenanthriplatin. RSC Chem Biol 2023; 4:344-353. [PMID: 37181632 PMCID: PMC10170627 DOI: 10.1039/d2cb00247g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Accepted: 02/01/2023] [Indexed: 03/03/2023] Open
Abstract
Ruthenium complexes are often investigated as potential replacements for platinum-based chemotherapeutics in hopes of identifying systems with improved tolerability in vivo and reduced susceptibility to cellular resistance mechanisms. Inspired by phenanthriplatin, a non-traditional platinum agent that contains only one labile ligand, monofunctional ruthenium polypyridyl agents have been developed, but until now, few demonstrated promising anticancer activity. Here we introduce a potent new scaffold, based on [Ru(tpy)(dip)Cl]Cl (tpy = 2,2':6',2''-terpyridine and dip = 4,7-diphenyl-1,10-phenanthroline) in pursuit of effective Ru(ii)-based monofunctional agents. Notably, the extension of the terpyridine at the 4' position with an aromatic ring resulted in a molecule that was cytotoxic in several cancer cell lines with sub-micromolar IC50 values, induced ribosome biogenesis stress, and exhibited minimal zebrafish embryo toxicity. This study demonstrates the successful design of a Ru(ii) agent that mimics many of the biological effects and phenotypes seen with phenanthriplatin, despite numerous differences in both the ligands and metal center structure.
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Affiliation(s)
- Richard J Mitchell
- Department of Chemistry, University of Kentucky 505 Rose St. Lexington KY 40506 USA
| | - Sarah M Kriger
- Department of Chemistry, North Carolina State University 2620 Yarbrough DriveRaleigh NC 27695 USA
| | - Alexander D Fenton
- Department of Chemistry, University of Kentucky 505 Rose St. Lexington KY 40506 USA
| | - Dmytro Havrylyuk
- Department of Chemistry, University of Kentucky 505 Rose St. Lexington KY 40506 USA
| | - Ankit Pandeya
- Department of Chemistry, University of Kentucky 505 Rose St. Lexington KY 40506 USA
| | - Yang Sun
- Department of Chemistry, University of Kentucky 505 Rose St. Lexington KY 40506 USA
| | - Tami Smith
- Department of Plant and Soil Sciences, University of Kentucky 1100 S. Limestone St Lexington KY 40546 USA
| | - Jason E DeRouchey
- Department of Chemistry, University of Kentucky 505 Rose St. Lexington KY 40506 USA
| | - Jason M Unrine
- Department of Plant and Soil Sciences, University of Kentucky 1100 S. Limestone St Lexington KY 40546 USA
| | - Viral Oza
- Department of Molecular and Cellular Biochemistry, University of Kentucky 741 S. Limestone St. Lexington KY 40536 USA
| | - Jessica S Blackburn
- Department of Molecular and Cellular Biochemistry, University of Kentucky 741 S. Limestone St. Lexington KY 40536 USA
| | - Yinan Wei
- Department of Chemistry, University of Kentucky 505 Rose St. Lexington KY 40506 USA
| | - David K Heidary
- Department of Chemistry, North Carolina State University 2620 Yarbrough DriveRaleigh NC 27695 USA
| | - Edith C Glazer
- Department of Chemistry, North Carolina State University 2620 Yarbrough DriveRaleigh NC 27695 USA
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Pigg HC, Yglesias MV, Sutton EC, McDevitt CE, Shaw M, DeRose VJ. Time-Dependent Studies of Oxaliplatin and Other Nucleolar Stress-Inducing Pt(II) Derivatives. ACS Chem Biol 2022; 17:2262-2271. [PMID: 35917257 DOI: 10.1021/acschembio.2c00399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The properties of small molecule Pt(II) compounds that drive specific cellular responses are of interest due to their broad clinical use as chemotherapeutics as well as to provide a better mechanistic understanding of bioinorganic processes. The chemotherapeutic compound cisplatin causes cell death through DNA damage, while oxaliplatin may induce cell death through inhibition of ribosome biogenesis, also referred to as nucleolar stress induction. Previous work has found a subset of oxaliplatin derivatives that cause nucleolar stress at 24 h drug treatment. Here we report that these different Pt(II) derivatives exhibit a range of rates and degrees of global nucleolar stress induction as well as inhibition of rRNA transcription. Potential explanations for these variations include both the ring size and stereochemistry of the non-aquation-labile ligand. We observe that Pt(II) compounds containing a 6-membered ring show faster onset and a higher overall degree of nucleolar stress than those containing a 5-membered ring, and that compounds having the 1R,2R-stereoisomeric conformation show faster onset and a higher overall degree of stress than those having the 1S,2S-conformation. Pt(II) cellular accumulation and cellular Pt(II)-DNA adduct formation did not correlate with nucleolar stress induction, indicating that the effect is not due to global interactions. Together these results suggest that Pt(II) compounds induce nucleolar stress through a mechanism that likely involves one or a few key intermolecular interactions.
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McDevitt CE, Guerrero AS, Smith HM, DeRose VJ. Influence of ring modifications on nucleolar stress caused by oxaliplatin-like compounds. Chembiochem 2022; 23:e202200130. [PMID: 35475312 DOI: 10.1002/cbic.202200130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/25/2022] [Indexed: 11/06/2022]
Abstract
Oxaliplatin, a platinum compound in broad clinical use, can induce cell death through a nucleolar stress pathway rather than the canonical DNA damage response studied for other Pt(II) compounds. Previous work has found that the oxaliplatin 1,2-diaminocyclohexane (DACH) ring but not the oxalate leaving group is important to the ability to induce nucleolar stress. Here we study the influence of DACH ring substituents at the 4-position on the ability of DACH-Pt(II) compounds to cause nucleolar stress. We determine that DACH-Pt(II) compounds with 4-position methyl, ethyl, or propyl substituents induce nucleolar stress, but DACH-Pt(II) compounds with 4-isopropyl substituents do not induce nucleolar stress. This effect is independent of whether the substituent is in the axial or equatorial position relatively to the trans diamines of the ligand. These results suggest that spatially sensitive interactions could be involved in the ability of platinum compounds to cause nucleolar stress.
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Affiliation(s)
| | | | - Haley M Smith
- University of Oregon, Chemistry and Biochemistry, UNITED STATES
| | - Victoria Jeanne DeRose
- University of Oregon, Department of Chemistry, 1253 University of Oregon, 97403-1253, Eugene, UNITED STATES
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7
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Mroz AM, Davenport AM, Sterling J, Davis J, Hendon CH. An Electric Field–Based Approach for Quantifying Effective Volumes and Radii of Chemically Affected Space. Chem Sci 2022; 13:6558-6566. [PMID: 35756514 PMCID: PMC9172366 DOI: 10.1039/d2sc00780k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 04/29/2022] [Indexed: 11/21/2022] Open
Abstract
Chemical shape and size play a critical role in chemistry. The van der Waals (vdW) radius, a familiar manifold used to quantify size by assuming overlapping spheres, provides rapid estimates of size in atoms, molecules, and materials. However, the vdW method may be too rigid to describe highly polarized systems and chemical species that stray from spherical atomistic environments. To deal with these exotic chemistries, numerous alternate methods based on electron density have been presented. While each boasts inherent generality, all define the size of a chemical system, in one way or another, by its electron density. Herein, we revisit the longstanding problem of assessing sizes of atoms and molecules, instead through examination of the local electric field produced by them. While conceptually different than nuclei-centered methods like that of van der Waals, the field assesses chemically affected volumes. This approach implicitly accounts for long-range fields in highly polar systems and predicts that cations should affect more space than neutral counterparts. Computing atomic and molecular volumes from DFT and ab initio-based electric fields.![]()
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Affiliation(s)
- Austin M Mroz
- Department of Chemistry and Biochemistry, University of Oregon Eugene OR 97403 USA
| | - Audrey M Davenport
- Department of Chemistry and Biochemistry, University of Oregon Eugene OR 97403 USA
| | - Jasper Sterling
- Department of Chemistry and Biochemistry, University of Oregon Eugene OR 97403 USA
| | - Joshua Davis
- Department of Chemistry and Biochemistry, University of Oregon Eugene OR 97403 USA
| | - Christopher H Hendon
- Department of Chemistry and Biochemistry, University of Oregon Eugene OR 97403 USA
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de la Cueva-Alique I, de la Torre-Rubio E, Muñoz L, Calvo-Jareño A, Perez-Redondo A, Gude L, Cuenca T, Royo E. Stereoselective synthesis of oxime containing Pd(II) compounds: Highly effective, selective and stereo-regulated cytotoxicity against carcinogenic PC-3 cells. Dalton Trans 2022; 51:12812-12828. [DOI: 10.1039/d2dt01403c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New palladium compounds [Pd{(1S,4R)-NOH^NH(R)}Cl2] (R = Ph 1a or Bn 1b), [Pd{(1S,4R)-NOH^NH(R)}{(1S,4R)-NO^NH(R)}][Cl] (R = Ph 2a or Bn 2b) and corresponding [Pd{(1R,4S)-NOH^NH(R)}Cl2] (R = Ph 1a’ or Bn 1b’) and...
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10
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Sutton EC, DeRose VJ. Early nucleolar responses differentiate mechanisms of cell death induced by oxaliplatin and cisplatin. J Biol Chem 2021; 296:100633. [PMID: 33819479 PMCID: PMC8131322 DOI: 10.1016/j.jbc.2021.100633] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 03/23/2021] [Accepted: 04/01/2021] [Indexed: 02/07/2023] Open
Abstract
Recent reports provide evidence that the platinum chemotherapeutic oxaliplatin causes cell death via ribosome biogenesis stress, while cisplatin causes cell death via the DNA damage response (DDR). Underlying differences in mechanisms that might initiate disparate routes to cell death by these two broadly used platinum compounds have not yet been carefully explored. Additionally, prior studies had demonstrated that cisplatin can also inhibit ribosome biogenesis. Therefore, we sought to directly compare the initial influences of oxaliplatin and cisplatin on nucleolar processes and on the DDR. Using pulse-chase experiments, we found that at equivalent doses, oxaliplatin but not cisplatin significantly inhibited ribosomal RNA (rRNA) synthesis by Pol I, but neither compound affected rRNA processing. Inhibition of rRNA synthesis occurred as early as 90 min after oxaliplatin treatment in A549 cells, concurrent with the initial redistribution of the nucleolar protein nucleophosmin (NPM1). We observed that the nucleolar protein fibrillarin began to redistribute by 6 h after oxaliplatin treatment and formed canonical nucleolar caps by 24 h. In cisplatin-treated cells, DNA damage, as measured by γH2AX immunofluorescence, was more extensive, whereas nucleolar organization was unaffected. Taken together, our results demonstrate that oxaliplatin causes early nucleolar disruption via inhibition of rRNA synthesis accompanied by NPM1 relocalization and subsequently causes extensive nucleolar reorganization, while cisplatin causes early DNA damage without significant nucleolar disruption. These data support a model in which, at clinically relevant doses, cisplatin kills cells via the canonical DDR, and oxaliplatin kills cells via ribosome biogenesis stress, specifically via rapid inhibition of rRNA synthesis.
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Affiliation(s)
- Emily C Sutton
- Department of Biology, University of Oregon, Eugene, Oregon, USA; Institute of Molecular Biology, University of Oregon, Eugene, Oregon, USA
| | - Victoria J DeRose
- Institute of Molecular Biology, University of Oregon, Eugene, Oregon, USA; Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon, USA.
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Sutton EC, McDevitt CE, Prochnau JY, Yglesias MV, Mroz AM, Yang MC, Cunningham RM, Hendon CH, DeRose VJ. Nucleolar Stress Induction by Oxaliplatin and Derivatives. J Am Chem Soc 2019; 141:18411-18415. [PMID: 31670961 DOI: 10.1021/jacs.9b10319] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Platinum(II) compounds are a critical class of chemotherapeutic agents. Recent studies have highlighted the ability of a subset of Pt(II) compounds, including oxaliplatin but not cisplatin, to induce cytotoxicity via nucleolar stress rather than a canonical DNA damage response. In this study, influential properties of Pt(II) compounds were investigated using redistribution of nucleophosmin (NPM1) as a marker of nucleolar stress. NPM1 assays were coupled to calculated and measured properties such as compound size and hydrophobicity. The oxalate leaving group of oxaliplatin is not required for NPM1 redistribution. Interestingly, although changes in diaminocyclohexane (DACH) ligand ring size and aromaticity can be tolerated, ring orientation appears important for stress induction. The specificity of ligand requirements provides insight into the striking ability of only certain Pt(II) compounds to activate nucleolar processes.
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Que L. In celebration of Joan Broderick, 2019 recipient of the Alfred Bader Award in Bioorganic or Bioinorganic Chemistry. J Biol Inorg Chem 2019. [DOI: 10.1007/s00775-019-01715-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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