1
|
Labra-Vázquez P, Mudrak V, Tassé M, Mallet-Ladeira S, Sournia-Saquet A, Malval JP, Lacroix PG, Malfant I. Acetylacetonate Ruthenium Nitrosyls: A Gateway to Nitric Oxide Release in Water under Near-Infrared Excitation by Two-Photon Absorption. Inorg Chem 2023. [PMID: 37994054 DOI: 10.1021/acs.inorgchem.3c03355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Abstract
A fundamental challenge for phototriggered therapies is to obtain robust molecular frameworks that can withstand biological media. Photoactivatable nitric oxide (NO) releasing molecules (photoNORMs) based on ruthenium nitrosyl (RuNO) complexes are among the most studied systems due to several appealing features that make them attractive for therapeutic applications. Nevertheless, the propensity of the NO ligand to be attacked by nucleophiles frequently manifests as significant instability in water for this class of photoNORMs. Our approach to overcome this limitation involved enhancing the Ru-NO π-backbonding to lower the electrophilicity at the NO by replacing the commonly employed 2,2'-bipyridine (bpy) ligand by an anionic, electron-rich, acetylacetonate (acac). A versatile and convenient synthetic route is developed and applied for the preparation of a large library of RuNO photoNORMs with the general formula [RuNO(tpy)(acac)]2+ (tpy = 2,2':6',2″-terpyridine). A combined theoretical and experimental analysis of the Ru-NO bonding in these complexes is presented, supported by extensive single-crystal X-ray diffraction experiments and by topological analyses of the electron charge density by DFT. The enhanced π-back-bonding, systematically evidenced by several techniques, resulted in a remarkable stability in water for these complexes, where significant NO release efficiencies were recorded. We finally demonstrate the possibility of obtaining sophisticated water-stable multipolar NO-delivery platforms that can be activated in the near-IR region by two-photon absorption (TPA), as demonstrated for an octupolar complex with a TPA cross section of 1530 GM at λ = 800 nm and for which NO photorelease was demonstrated under TPA irradiation in aqueous media.
Collapse
Affiliation(s)
- Pablo Labra-Vázquez
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, F-31077 Toulouse, France
| | - Vladyslav Mudrak
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, F-31077 Toulouse, France
| | - Marine Tassé
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, F-31077 Toulouse, France
| | - Sonia Mallet-Ladeira
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, F-31077 Toulouse, France
| | - Alix Sournia-Saquet
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, F-31077 Toulouse, France
| | - Jean-Pierre Malval
- Institut de Science des Matériaux de Mulhouse CNRS-UMR 7361, Université de Haute Alsace, 15 rue Jean Starcky, 68057 Mulhouse, France
| | - Pascal G Lacroix
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, F-31077 Toulouse, France
| | - Isabelle Malfant
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, F-31077 Toulouse, France
| |
Collapse
|
2
|
Kido K, Kaneko M. Conformation, hydration, and ligand exchange process of ruthenium nitrosyl complexes in aqueous solution: Free-energy calculations by a combination of molecular-orbital theories and different solvent models. J Comput Chem 2023; 44:546-558. [PMID: 36205560 DOI: 10.1002/jcc.27021] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/07/2022] [Accepted: 09/14/2022] [Indexed: 01/07/2023]
Abstract
Distribution of solvent molecules near transition-metal complex is key information to comprehend the functionality, reactivity, and so forth. However, polarizable continuum solvent models still are the standard and conventional partner of molecular-orbital (MO) calculations in the solution system including transition-metal complex. In this study, we investigate the conformation, hydration, and ligand substitution reaction between NO2 - and H2 O in aqueous solution for [Ru(NO)(OH)(NO2 )4 ]2- (A), [Ru(NO)(OH)(NO2 )3 (ONO)]2- (B), and [Ru(NO)(OH)(NO2 )3 (H2 O)]- (C) using a combination method of MO theories and a state-of-the-art molecular solvation technique (NI-MC-MOZ-SCF). A dominant species is found in the complex B conformers and, as expected, different between the solvent models, which reveals that molecular solvation beyond continuum media treatment are required for a reliable description of solvation near transition-metal complex. In the stability constant evaluation of ligand substitution reaction, an assumption that considers the direct association between the dissociated NO2 - and complex C is useful to obtain a reliable stability constant.
Collapse
Affiliation(s)
- Kentaro Kido
- Nuclear Safety Research Center, Japan Atomic Energy Agency, Tokai-mura Naka-gun, Japan
| | - Masashi Kaneko
- Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Tokai-mura Naka-gun, Japan
| |
Collapse
|
3
|
Villaseco Arribas E, Agostini F, Maitra NT. Exact Factorization Adventures: A Promising Approach for Non-Bound States. Molecules 2022; 27:molecules27134002. [PMID: 35807246 PMCID: PMC9267945 DOI: 10.3390/molecules27134002] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/07/2022] [Accepted: 06/09/2022] [Indexed: 11/29/2022] Open
Abstract
Modeling the dynamics of non-bound states in molecules requires an accurate description of how electronic motion affects nuclear motion and vice-versa. The exact factorization (XF) approach offers a unique perspective, in that it provides potentials that act on the nuclear subsystem or electronic subsystem, which contain the effects of the coupling to the other subsystem in an exact way. We briefly review the various applications of the XF idea in different realms, and how features of these potentials aid in the interpretation of two different laser-driven dissociation mechanisms. We present a detailed study of the different ways the coupling terms in recently-developed XF-based mixed quantum-classical approximations are evaluated, where either truly coupled trajectories, or auxiliary trajectories that mimic the coupling are used, and discuss their effect in both a surface-hopping framework as well as the rigorously-derived coupled-trajectory mixed quantum-classical approach.
Collapse
Affiliation(s)
| | - Federica Agostini
- Institut de Chimie Physique UMR8000, Université Paris-Saclay, CNRS, 91405 Orsay, France;
| | - Neepa T. Maitra
- Department of Physics, Rutgers University, Newark, NJ 07102, USA;
- Correspondence:
| |
Collapse
|
4
|
Talotta F, Boggio‐Pasqua M, González L. Early Relaxation Dynamics in the Photoswitchable Complex trans-[RuCl(NO)(py) 4 ] 2. Chemistry 2020; 26:11522-11528. [PMID: 32281169 PMCID: PMC7539916 DOI: 10.1002/chem.202000507] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/16/2020] [Indexed: 11/22/2022]
Abstract
The design of photoswitchable transition metal complexes with tailored properties is one of the most important challenges in chemistry. Studies explaining the underlying mechanisms are, however, scarce. Herein, the early relaxation dynamics towards NO photoisomerization in trans-[RuCl(NO)(py)4 ]2+ is elucidated by means of non-adiabatic dynamics, which provided time-resolved information and branching ratios. Three deactivation mechanisms (I, II, III) in the ratio 3:2:4 were identified. Pathways I and III involve ultrafast intersystem crossing and internal conversion, whereas pathway II involves only internal conversion.
Collapse
Affiliation(s)
- Francesco Talotta
- lnstitute of Theoretical ChemistryFaculty of ChemistryUniversity of ViennaWähringer Strasse 171090ViennaAustria
- Laboratoire de Chimie et Physique Quantiques, UMR 5626, lRSAMCCNRS et Université Toulouse 3118 route de Narbonne31062ToulouseFrance
- Present Address: Laboratoire de Chimie PhysiqueUMR 8000 CNRS/University Paris-SudUniversity Paris-Saclay, 91403 Orsay, andlnstitut de Sciences Moleculaires d'Orsay, UMR8214 CNRS/University Paris-Sud, University Paris-Saclay91403OrsayFrance
| | - Martial Boggio‐Pasqua
- Laboratoire de Chimie et Physique Quantiques, UMR 5626, lRSAMCCNRS et Université Toulouse 3118 route de Narbonne31062ToulouseFrance
| | - Leticia González
- lnstitute of Theoretical ChemistryFaculty of ChemistryUniversity of ViennaWähringer Strasse 171090ViennaAustria
- Vienna Research Platform on Accelerating Photoreaction DiscoveryUniversity of ViennaWähringer Strasse 171090ViennaAustria
| |
Collapse
|
5
|
Talotta F, Morisset S, Rougeau N, Lauvergnat D, Agostini F. Internal Conversion and Intersystem Crossing with the Exact Factorization. J Chem Theory Comput 2020; 16:4833-4848. [PMID: 32633509 DOI: 10.1021/acs.jctc.0c00493] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present a detailed derivation of the generalized coupled-trajectory mixed quantum-classical (G-CT-MQC) algorithm based on the exact-factorization equations. The ultimate goal is to propose an algorithm that can be employed for molecular dynamics simulations of nonradiative phenomena, as the spin-allowed internal conversions and the spin-forbidden intersystem crossings. Internal conversions are nonadiabatic processes driven by the kinetic coupling between electronic states, whereas intersystem crossings are mediated by the spin-orbit coupling. In this paper, we discuss computational issues related to the suitable representation for electronic dynamics and the different natures of kinetic and spin-orbit coupling. Numerical studies on model systems allow us to test the performance of the G-CT-MQC algorithm in different situations.
Collapse
Affiliation(s)
- Francesco Talotta
- Institut de Chimie Physique, UMR8000, CNRS, Université Paris-Saclay, 91405 Orsay, France.,Institut des Sciences Moléculaires d'Orsay, CNRS, Université Paris-Saclay, 91405 Orsay, France
| | - Sabine Morisset
- Institut des Sciences Moléculaires d'Orsay, CNRS, Université Paris-Saclay, 91405 Orsay, France
| | - Nathalie Rougeau
- Institut des Sciences Moléculaires d'Orsay, CNRS, Université Paris-Saclay, 91405 Orsay, France
| | - David Lauvergnat
- Institut de Chimie Physique, UMR8000, CNRS, Université Paris-Saclay, 91405 Orsay, France
| | - Federica Agostini
- Institut de Chimie Physique, UMR8000, CNRS, Université Paris-Saclay, 91405 Orsay, France
| |
Collapse
|
6
|
Talotta F, González L, Boggio-Pasqua M. CASPT2 Potential Energy Curves for NO Dissociation in a Ruthenium Nitrosyl Complex. Molecules 2020; 25:E2613. [PMID: 32512777 PMCID: PMC7321186 DOI: 10.3390/molecules25112613] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 05/26/2020] [Accepted: 06/02/2020] [Indexed: 11/16/2022] Open
Abstract
Ruthenium nitrosyl complexes are fascinating photoactive compounds showing complex photoreactivity, such as N→O linkage photoisomerism and NO photorelease. This dual photochemical behavior has been the subject of many experimental studies in order to optimize these systems for applications as photoswitches or therapeutic agents for NO delivery. However, despite recent experimental and computational studies along this line, the underlying photochemical mechanisms still need to be elucidated for a more efficient design of these systems. Here, we present a theoretical contribution based on the calculations of excited-state potential energy profiles for NO dissociation in the prototype trans-[RuCl(NO)(py)4]2+ complex at the complete active space second-order perturbation theory (CASPT2). The results point to a sequential two-step photon absorption photorelease mechanism coupled to partial photoisomerization to a side-on intermediate, in agreement with previous density functional theory calculations.
Collapse
Affiliation(s)
- Francesco Talotta
- Institut de Chimie et Physique, UMR 8000 CNRS/Université Paris-Saclay, 91405 Orsay, France;
- Laboratoire de Chimie et Physique Quantiques, IRSAMC, CNRS/Université Toulouse 3, 118 route de Narbonne, 31062 Toulouse, France
- Institut für Theoretische Chemie, Fakultät für Chemie, Universität Wien, Währinger Strasse 17, 1090 Vienna, Austria;
| | - Leticia González
- Institut für Theoretische Chemie, Fakultät für Chemie, Universität Wien, Währinger Strasse 17, 1090 Vienna, Austria;
- Vienna Research Platform on Accelerating Photoreaction Discovery, Universität Wien, Währinger Strasse 17, 1090 Vienna, Austria
| | - Martial Boggio-Pasqua
- Laboratoire de Chimie et Physique Quantiques, IRSAMC, CNRS/Université Toulouse 3, 118 route de Narbonne, 31062 Toulouse, France
| |
Collapse
|
7
|
Sanz García J, Boggio‐Pasqua M, Ciofini I, Campetella M. Excited state tracking during the relaxation of coordination compounds. J Comput Chem 2019; 40:1420-1428. [PMID: 30801766 PMCID: PMC8247441 DOI: 10.1002/jcc.25800] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/30/2019] [Accepted: 01/30/2019] [Indexed: 12/13/2022]
Abstract
The ability to locate minima on electronic excited states (ESs) potential energy surfaces both in the case of bright and dark states is crucial for a full understanding of photochemical reactions. This task has become a standard practice for small- to medium-sized organic chromophores thanks to the constant developments in the field of computational photochemistry. However, this remains a very challenging effort when it comes to the optimization of ESs of transition metal complexes (TMCs), not only due to the presence of several electronic ESs close in energy, but also due to the complex nature of the ESs involved. In this article, we present a simple yet powerful method to follow an ES of interest during a structural optimization in the case of TMCs, based on the use of a compact hole-particle representation of the electronic transition, namely the natural transition orbitals (NTOs). State tracking using NTOs is unambiguously accomplished by computing the mono-electronic wave function overlap between consecutive steps of the optimization. Here, we demonstrate that this simple but robust procedure works not only in the case of the cytosine but also in the case of the ES optimization of a ruthenium nitrosyl complex which is very problematic with standard approaches. © 2019 The Authors. Journal of Computational Chemistry published by Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Juan Sanz García
- Chimie ParisTechPSL Research University, CNRS, Institute of Chemistry for Life and Health Sciences (i‐CLeHS), FRE 2027F‐75005 ParisFrance
| | - Martial Boggio‐Pasqua
- Laboratoire de Chimie et Physique QuantiquesIRSAMC, CNRS et Université Toulouse 3118 route de Narbonne, 31062 ToulouseFrance
| | - Ilaria Ciofini
- Chimie ParisTechPSL Research University, CNRS, Institute of Chemistry for Life and Health Sciences (i‐CLeHS), FRE 2027F‐75005 ParisFrance
| | - Marco Campetella
- Chimie ParisTechPSL Research University, CNRS, Institute of Chemistry for Life and Health Sciences (i‐CLeHS), FRE 2027F‐75005 ParisFrance
| |
Collapse
|
8
|
Transient metal-centered states mediate isomerization of a photochromic ruthenium-sulfoxide complex. Nat Commun 2018; 9:1989. [PMID: 29777157 PMCID: PMC5959936 DOI: 10.1038/s41467-018-04351-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 04/24/2018] [Indexed: 11/14/2022] Open
Abstract
Ultrafast isomerization reactions underpin many processes in (bio)chemical systems and molecular materials. Understanding the coupled evolution of atomic and molecular structure during isomerization is paramount for control and rational design in molecular science. Here we report transient X-ray absorption studies of the photo-induced linkage isomerization of a Ru-based photochromic molecule. X-ray spectra reveal the spin and valence charge of the Ru atom and provide experimental evidence that metal-centered excited states mediate isomerization. Complementary X-ray spectra of the functional ligand S atoms probe the nuclear structural rearrangements, highlighting the formation of two metal-centered states with different metal-ligand bonding. These results address an essential open question regarding the relative roles of transient charge-transfer and metal-centered states in mediating photoisomerization. Global temporal and spectral data analysis combined with time-dependent density functional theory reveals a complex mechanism for photoisomerization with atomic details of the transient molecular and electronic structure not accessible by other means. An essential open question in functional transition metal complexes is the relative roles of charge-transfer and metal-centered excited states. Here the authors identify the important role of metal-centered excited states in the linkage photoisomerization of a photochromic Ru-sulfoxide complex.
Collapse
|