1
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Bhowmik R, Roy M. Recent advances on the development of NO-releasing molecules (NORMs) for biomedical applications. Eur J Med Chem 2024; 268:116217. [PMID: 38367491 DOI: 10.1016/j.ejmech.2024.116217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/02/2024] [Accepted: 02/02/2024] [Indexed: 02/19/2024]
Abstract
Nitric oxide (NO) is an important biological messenger as well as a signaling molecule that participates in a broad range of physiological events and therapeutic applications in biological systems. However, due to its very short half-life in physiological conditions, its therapeutic applications are restricted. Efforts have been made to develop an enormous number of NO-releasing molecules (NORMs) and motifs for NO delivery to the target tissues. These NORMs involve organic nitrate, nitrite, nitro compounds, transition metal nitrosyls, and several nanomaterials. The controlled release of NO from these NORMs to the specific site requires several external stimuli like light, sound, pH, heat, enzyme, etc. Herein, we have provided a comprehensive review of the biochemistry of nitric oxide, recent advancements in NO-releasing materials with the appropriate stimuli of NO release, and their biomedical applications in cancer and other disease control.
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Affiliation(s)
- Rintu Bhowmik
- Department of Chemistry, National Institute of Technology Manipur, Langol, 795004, Imphal West, Manipur, India
| | - Mithun Roy
- Department of Chemistry, National Institute of Technology Manipur, Langol, 795004, Imphal West, Manipur, India.
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2
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Dakua KK, Rajak K, Mishra S. Spin–vibronic coupling in the quantum dynamics of a Fe(III) trigonal-bipyramidal complex. J Chem Phys 2022; 156:134103. [DOI: 10.1063/5.0080611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The presence of a high density of excited electronic states in the immediate vicinity of the optically bright state of a molecule paves the way for numerous photo-relaxation channels. In transition-metal complexes, the presence of heavy atoms results in a stronger spin–orbit coupling, which enables spin forbidden spin-crossover processes to compete with the spin-allowed internal conversion processes. However, no matter how effectively the states cross around the Franck–Condon region, the degree of vibronic coupling, of both relativistic and non-relativistic nature, drives the population distribution among these states. One such case is demonstrated in this work for the intermediate-spin Fe(III) trigonal-bipyramidal complex. A quantum dynamical investigation of the photo-deactivation mechanism in the Fe(III) system is presented using the multi-configurational time-dependent Hartree approach based on the vibronic Hamiltonian whose coupling terms are derived from the state-averaged complete active space self-consistent field/complete active space with second-order perturbation theory (CASPT2) calculations and spin–orbit coupling of the scalar-relativistic CASPT2 states. The results of this study show that the presence of a strong (non-relativistic) vibronic coupling between the optically bright intermediate-spin state and other low-lying states of the same spin-multiplicity overpowers the spin–orbit coupling between the intermediate-spin and high-spin states, thereby lowering the chances of spin-crossover while exhibiting ultrafast relaxation among the intermediate-spin states. In a special case, where the population transfer pathway via the non-relativistic vibronic coupling is blocked, the probability of the spin-crossover is found to increase. This suggests that a careful modification of the complex by incorporation of heavier atoms with stronger relativistic effects can enhance the spin-crossover potential of Fe(III) intermediate-spin complexes.
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Affiliation(s)
- Kishan Kumar Dakua
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Karunamoy Rajak
- Centre for Theoretical Studies, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Sabyashachi Mishra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, India
- Centre for Computational and Data Sciences, Indian Institute of Technology Kharagpur, Kharagpur, India
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3
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Cho JH, Kim M, You Y, Lee HI. A new photoactivable NO-releasing {Ru-NO} 6 ruthenium nitrosyl complex with a tetradentate ligand containing aniline and pyridine moieties. Chem Asian J 2021; 17:e202101244. [PMID: 34921511 DOI: 10.1002/asia.202101244] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/25/2021] [Indexed: 11/12/2022]
Abstract
A new type of photoactivable NO-releasing ruthenium nitrosyl complex, [Ru(EPBP)Cl(NO)], with a tetradentate ligand, N,N'-(ethane-1,2-diyldi-o-phenylene)-bis(pyridine-2-carboxamide) (= H2 EPBP) was synthesized. Single crystal X-ray crystallography revealed that the complex has a distorted octahedral coordination geometry and NO is positioned at cis to Cl- ion. NO-photolysis was observed under a white room light. The photodissociation of Ru-NO bond was identified by various techniques including X-ray crystallography, IR, UV/Vis absorption, electron paramagnetic resonance (EPR), and NMR spectroscopies. Quantum yields for the NO-photolysis of the complex in CH3 OH, CHCl3 , DMSO, CH3 CN, and CH3 NO2 were measured to be 0.19-0.36 with 400 (±5) nm excitation. Density functional theory (DFT) and time-dependent density functional theory (TDDFT) calculations were performed to understand the details of the photodissociation of the complex. The calculations suggest that the NO photolysis is most likely initiated by the electronic transition from the aniline moiety π MOs (π (aniline)) of the EPBP2- chelating ligand to the π-antibonding MO of Ru-NO (π*(Ru-NO)). Experimental and theoretical investigations indicate that the EPBP2- ligand provides an effective platform forming ruthenium nitrosyl complexes useful for NO-photoreleasing.
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Affiliation(s)
- Jang-Hoon Cho
- Department of Chemistry and Green-Nano Research Center, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Minyoung Kim
- Department of Chemistry and Green-Nano Research Center, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Youngmin You
- Division of Chemical Engineering and Materials Science and Graduated Program in System Health Science, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Hong-In Lee
- Department of Chemistry and Green-Nano Research Center, Kyungpook National University, Daegu, 41566, Republic of Korea
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Muniz Carvalho E, Silva Sousa EH, Bernardes‐Génisson V, Gonzaga de França Lopes L. When NO
.
Is not Enough: Chemical Systems, Advances and Challenges in the Development of NO
.
and HNO Donors for Old and Current Medical Issues. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100527] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Edinilton Muniz Carvalho
- Bioinorganic Group Department of Organic and Inorganic Chemistry Center of Sciences Federal University of Ceará Pici Campus Fortaleza 60455-760 Brazil
- CNRS Laboratoire de Chimie de Coordination LCC UPR 8241 205 Route de Narbonne, 44099 31077 Toulouse, Cedex 4 France
- Université de Toulouse Université Paul Sabatier UPS 118 Route de Narbonne 31062 Toulouse, Cedex 9 France
| | - Eduardo Henrique Silva Sousa
- Bioinorganic Group Department of Organic and Inorganic Chemistry Center of Sciences Federal University of Ceará Pici Campus Fortaleza 60455-760 Brazil
| | - Vania Bernardes‐Génisson
- CNRS Laboratoire de Chimie de Coordination LCC UPR 8241 205 Route de Narbonne, 44099 31077 Toulouse, Cedex 4 France
- Université de Toulouse Université Paul Sabatier UPS 118 Route de Narbonne 31062 Toulouse, Cedex 9 France
| | - Luiz Gonzaga de França Lopes
- Bioinorganic Group Department of Organic and Inorganic Chemistry Center of Sciences Federal University of Ceará Pici Campus Fortaleza 60455-760 Brazil
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5
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Freitag L, Lindenbauer L, Oppel M, González L. A Density Matrix Renormalization Group Study of the Low-Lying Excited States of a Molybdenum Carbonyl-Nitrosyl Complex. Chemphyschem 2021; 22:2371-2377. [PMID: 34495578 PMCID: PMC9292996 DOI: 10.1002/cphc.202100549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/06/2021] [Indexed: 11/07/2022]
Abstract
A density matrix renormalization group-self consistent field (DMRG-SCF) study has been carried out to calculate the low-lying excited states of CpMo(CO)2 NO, a molybdenum complex containing NO and CO ligands. In order to automatically select an appropriate active space, a novel procedure employing the maximum single-orbital entropy for several states has been introduced and shown to be efficient and easy-to-implement when several electronic states are simultaneously considered. The analysis of the resulting natural transition orbitals and charge-transfer numbers shows that the lowest five excited electronic states are excitation into metal-NO antibonding orbitals, which offer the possibility for nitric oxide (NO) photorelease after excitation with visible light. Higher excited states are metal-centered excitations with contributions of metal-CO antibonding orbitals, which may serve as a gateway for carbon monoxide (CO) delivery. Time-dependent density functional theory calculations done for comparison, show that the state characters agree remarkably well with those from DMRG-SCF, while excitation energies are 0.4-1.0 eV red-shifted with respect to the DMRG-SCF ones.
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Affiliation(s)
- Leon Freitag
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Str. 17, 1090, Vienna, Austria
| | - Leopold Lindenbauer
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Str. 17, 1090, Vienna, Austria
| | - Markus Oppel
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Str. 17, 1090, Vienna, Austria
| | - Leticia González
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Str. 17, 1090, Vienna, Austria.,Vienna Research Platform on Accelerating Photoreaction Discovery, University of Vienna, Währinger Str. 17, 1090, Vienna, Austria
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6
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Abstract
Coordination compounds, characterized by fascinating and tunable electronic properties, are capable of binding easily to proteins, polymers, wires and DNA. Upon irradiation, these molecular systems develop functions finding applications in solar cells, photocatalysis, luminescent and conformational probes, electron transfer triggers and diagnostic or therapeutic tools. The control of these functions is activated by the light wavelength, the metal/ligand cooperation and the environment within the first picoseconds (ps). After a brief summary of the theoretical background, this perspective reviews case studies, from 1st row to 3rd row transition metal complexes, that illustrate how spin-orbit, vibronic coupling and quantum effects drive the photophysics of this class of molecules at the early stage of the photoinduced elementary processes within the fs-ps time scale range.
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Affiliation(s)
- Chantal Daniel
- Laboratoire de Chimie Quantique, Université de Strasbourg, CNRS UMR7177, Institut Le Bel, 4 Rue Blaise Pascal, 67000 Strasbourg, France.
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7
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Weinstain R, Slanina T, Kand D, Klán P. Visible-to-NIR-Light Activated Release: From Small Molecules to Nanomaterials. Chem Rev 2020; 120:13135-13272. [PMID: 33125209 PMCID: PMC7833475 DOI: 10.1021/acs.chemrev.0c00663] [Citation(s) in RCA: 258] [Impact Index Per Article: 64.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Indexed: 02/08/2023]
Abstract
Photoactivatable (alternatively, photoremovable, photoreleasable, or photocleavable) protecting groups (PPGs), also known as caged or photocaged compounds, are used to enable non-invasive spatiotemporal photochemical control over the release of species of interest. Recent years have seen the development of PPGs activatable by biologically and chemically benign visible and near-infrared (NIR) light. These long-wavelength-absorbing moieties expand the applicability of this powerful method and its accessibility to non-specialist users. This review comprehensively covers organic and transition metal-containing photoactivatable compounds (complexes) that absorb in the visible- and NIR-range to release various leaving groups and gasotransmitters (carbon monoxide, nitric oxide, and hydrogen sulfide). The text also covers visible- and NIR-light-induced photosensitized release using molecular sensitizers, quantum dots, and upconversion and second-harmonic nanoparticles, as well as release via photodynamic (photooxygenation by singlet oxygen) and photothermal effects. Release from photoactivatable polymers, micelles, vesicles, and photoswitches, along with the related emerging field of photopharmacology, is discussed at the end of the review.
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Affiliation(s)
- Roy Weinstain
- School
of Plant Sciences and Food Security, Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv 6997801, Israel
| | - Tomáš Slanina
- Institute
of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague, Czech Republic
| | - Dnyaneshwar Kand
- School
of Plant Sciences and Food Security, Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv 6997801, Israel
| | - Petr Klán
- Department
of Chemistry and RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
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8
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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.
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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
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9
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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.
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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
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10
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Rojas Pérez Y, Slep LD, Etchenique R. Cis–Trans Interconversion in Ruthenium(II) Bipyridine Complexes. Inorg Chem 2019; 58:11606-11613. [DOI: 10.1021/acs.inorgchem.9b01485] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yeraldith Rojas Pérez
- Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
| | - Leonardo D. Slep
- Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
| | - Roberto Etchenique
- Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
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11
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Hsiao HY, Chung CW, Santos JH, Villaflores OB, Lu TT. Fe in biosynthesis, translocation, and signal transduction of NO: toward bioinorganic engineering of dinitrosyl iron complexes into NO-delivery scaffolds for tissue engineering. Dalton Trans 2019; 48:9431-9453. [DOI: 10.1039/c9dt00777f] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The ubiquitous physiology of nitric oxide enables the bioinorganic engineering of [Fe(NO)2]-containing and NO-delivery scaffolds for tissue engineering.
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Affiliation(s)
- Hui-Yi Hsiao
- Center for Tissue Engineering
- Chang Gung Memorial Hospital
- Taoyuan
- Taiwan
| | - Chieh-Wei Chung
- Institute of Biomedical Engineering
- National Tsing Hua University
- Hsinchu
- Taiwan
| | | | - Oliver B. Villaflores
- Department of Biochemistry
- Faculty of Pharmacy
- University of Santo Tomas
- Manila
- Philippines
| | - Tsai-Te Lu
- Institute of Biomedical Engineering
- National Tsing Hua University
- Hsinchu
- Taiwan
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12
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Cadranel A, Oviedo PS, Alborés P, Baraldo LM, Guldi DM, Hodak JH. Electronic Energy Transduction from {Ru(py) 4} Chromophores to Cr(III) Luminophores. Inorg Chem 2018; 57:3042-3053. [PMID: 29473740 DOI: 10.1021/acs.inorgchem.7b02799] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Despite the large body of work on {Ru(bpy)2} sensitizer fragments, the same attention has not been devoted to their {Ru(py)4} analogues. In this context, we explored the donor-acceptor trans-[Ru(L)4{(μ-NC)Cr(CN)5}2]4-, where L = pyridine, 4-methoxypyridine, 4-dimethylaminopyridine. We report on the synthesis and the crystal structure as well as the electrochemical, spectroscopical, and photophysical properties of these trimetallic complexes, including transient absorption measurements. We observed emission from chromium-centered d-d states upon illuminating into either MLCT or MM'CT absorptions of {Ru(L)4} or {Ru-Cr}, respectively. The underlying energy transfer is as fast as 600 fs with quantum efficiencies ranging from 10% to 100%. These results document that {Ru(py)4} sensitizer fragments are as efficient as {Ru(bpy)2} in short-range energy transfer scenarios.
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Affiliation(s)
- Alejandro Cadranel
- Departamento de Química Analítica, Inorgánica y Química Física & INQUIMAE, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Pabellón 2 , Ciudad Universitaria, C1428EHA Buenos Aires , Argentina.,Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) , Friedrich-Alexander-Universität Erlangen-Nürnberg , Egerlandstraße 1-3 , 91058 Erlangen , Germany
| | - Paola S Oviedo
- Departamento de Química Analítica, Inorgánica y Química Física & INQUIMAE, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Pabellón 2 , Ciudad Universitaria, C1428EHA Buenos Aires , Argentina
| | - Pablo Alborés
- Departamento de Química Analítica, Inorgánica y Química Física & INQUIMAE, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Pabellón 2 , Ciudad Universitaria, C1428EHA Buenos Aires , Argentina
| | - Luis M Baraldo
- Departamento de Química Analítica, Inorgánica y Química Física & INQUIMAE, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Pabellón 2 , Ciudad Universitaria, C1428EHA Buenos Aires , Argentina
| | - Dirk M Guldi
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) , Friedrich-Alexander-Universität Erlangen-Nürnberg , Egerlandstraße 1-3 , 91058 Erlangen , Germany
| | - José H Hodak
- Departamento de Química Analítica, Inorgánica y Química Física & INQUIMAE, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Pabellón 2 , Ciudad Universitaria, C1428EHA Buenos Aires , Argentina
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13
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de Lima Batista AP, de Oliveira-Filho AGS, Galembeck SE. Photophysical properties and the NO photorelease mechanism of a ruthenium nitrosyl model complex investigated using the CASSCF-in-DFT embedding approach. Phys Chem Chem Phys 2018; 19:13860-13867. [PMID: 28513675 DOI: 10.1039/c7cp01642e] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A complete state-averaged active space self-consistent field (SA-CASSCF) calculation by means of the SA-CASSCF(18,14)-in-BP86 Miller-Manby embedding approach was performed to explore the ground and excited electronic states of the trans-[RuCl(NO)(NH3)4]2+ complex. Insights into the NO photodissociation mechanism and Ru-NO bonding properties are provided. In addition, spin-orbit (SO) interactions were taken into account to describe and characterize the spin-forbidden transitions observed at the low-energy regions of the trans-[RuCl(NO)(NH3)4]2+ UV-Vis spectrum. The SA-CASSCF(18,14)-in-BP86 electronic spectrum is in great agreement with the experimental data of Schreiner [Schreiner et al., Inorg. Chem., 1972, 11, 880].
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Affiliation(s)
- Ana P de Lima Batista
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
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14
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Shamran Mohammed H, Mallet-Ladeira S, Cormary B, Tassé M, Malfant I. trans-Chloridotetrakis(4-methylpyridine-κN)(nitrosyl-κN)ruthenium(II) bis(hexafluoridophosphate) acetone 0.75-solvate. IUCRDATA 2017. [DOI: 10.1107/s2414314617017618] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The title compound, [RuCl(NO)(C6H7N)4](PF6)2·0.75(CH3)2CO, comprises four ligands of 4-picoline in equatorial position around the central atom. Overall, the complex features an octahedral coordination environment around the central RuIIatom, with the chlorido ligandtransto the nitrosyl. The bond length of the nitrosyl N=O ligand is 1.140 (5) Å, while the angle Ru—N=O is 179.0 (4)°. The asymmetric unit contains four PF6−counter-anions, two with occupancy of 0.25 and one with occupancy of 0.5. One PF6−anion is disordered over two sets of sites and one other is disordered with an acetone molecule that occupies the same site.
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15
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Levin N, Perdoménico J, Bill E, Weyhermüller T, Slep LD. Pushing the photodelivery of nitric oxide to the visible: are {FeNO} 7 complexes good candidates? Dalton Trans 2017; 46:16058-16064. [PMID: 29119166 DOI: 10.1039/c7dt03142d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Photodelivery of NO requires stable compounds which can be made reactive by irradiation with (visible) light. Traditional {MNO}6 complexes require a substantial ligand design to shift their absorption spectra to the appropriate region of the electromagnetic spectrum. [Fe((CH2Py2)2Me[9]aneN3)(NO)](BF4)2 is a new {FeNO}7 octahedral coordination compound, which is thermally and air-stable in solution. Illumination with a 450 nm light source induces significant photodetachment of the coordinated NO (ϕNO = 0.52 mol einstein-1), suggesting that {FeNO}7 compounds can be in fact suitable compounds for therapeutic NO-photorelease.
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Affiliation(s)
- Natalia Levin
- Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, and INQUIMAE, Universidad de Buenos Aires - CONICET, Pabellón 2, 3er piso, Ciudad Universitaria, C1428EHA, Ciudad Autónoma de Buenos Aires, Argentina.
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17
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Marcolongo JP, Schmidt J, Levin N, Slep LD. A chemometric approach for determining the reaction quantum yields in consecutive photochemical processes. Phys Chem Chem Phys 2017; 19:21373-21381. [DOI: 10.1039/c7cp03619a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chemometrics helps in determining the quantum yields of multistep photoreactions and allows the deconvolution of the spectra of the colored intermediates.
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Affiliation(s)
- Juan P. Marcolongo
- Departamento de Química Inorgánica
- Analítica y Química Física
- Facultad de Ciencias Exactas y Naturales
- and INQUIMAE
- Universidad de Buenos Aires – CONICET
| | - Juan Schmidt
- Departamento de Química Inorgánica
- Analítica y Química Física
- Facultad de Ciencias Exactas y Naturales
- and INQUIMAE
- Universidad de Buenos Aires – CONICET
| | - Natalia Levin
- Departamento de Química Inorgánica
- Analítica y Química Física
- Facultad de Ciencias Exactas y Naturales
- and INQUIMAE
- Universidad de Buenos Aires – CONICET
| | - Leonardo D. Slep
- Departamento de Química Inorgánica
- Analítica y Química Física
- Facultad de Ciencias Exactas y Naturales
- and INQUIMAE
- Universidad de Buenos Aires – CONICET
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18
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Carrone G, Zayat L, Slep LD, Etchenique R. Transient photocyclization in ruthenium(ii) polypyridine complexes of indolamines. Phys Chem Chem Phys 2017; 19:2140-2147. [DOI: 10.1039/c6cp06580e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Irradiation of [Ru(55dmb)2(5MT)(H2O)]2+ in the visible region yields η2 coordinated [Ru(55dmb)2(5MT)]2+, which reverts spontaneously in the dark.
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Affiliation(s)
- G. Carrone
- Departamento de Química Inorgánica
- Analítica y Química Física
- INQUIMAE
- Facultad de Ciencias Exactas y Naturales
- Universidad de Buenos Aires
| | - L. Zayat
- Departamento de Química Inorgánica
- Analítica y Química Física
- INQUIMAE
- Facultad de Ciencias Exactas y Naturales
- Universidad de Buenos Aires
| | - L. D. Slep
- Departamento de Química Inorgánica
- Analítica y Química Física
- INQUIMAE
- Facultad de Ciencias Exactas y Naturales
- Universidad de Buenos Aires
| | - R. Etchenique
- Departamento de Química Inorgánica
- Analítica y Química Física
- INQUIMAE
- Facultad de Ciencias Exactas y Naturales
- Universidad de Buenos Aires
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19
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Tassé M, Mohammed HS, Sabourdy C, Mallet-Ladeira S, Lacroix PG, Malfant I. Synthesis, crystal structure, spectroscopic, and photoreactive properties of a ruthenium(II)-mononitrosyl complex. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.09.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Structures and spectroscopic properties of three [RuCl(2mqn) 2 NO] (H2mqn = 2-methyl-8-quinolinol) isomers: An experimental and density functional theoretical study. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.07.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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García JS, Alary F, Boggio-Pasqua M, Dixon IM, Heully JL. Is photoisomerization required for NO photorelease in ruthenium nitrosyl complexes? J Mol Model 2016; 22:284. [DOI: 10.1007/s00894-016-3138-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 10/09/2016] [Indexed: 11/24/2022]
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22
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Selvaganapathy M, Pravin N, Muniyandi V, Nazeer M, Raman N. Exploring the photochemosensitivity by novel cysteine-based mixed ligand complexes. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 157:77-88. [PMID: 26894848 DOI: 10.1016/j.jphotobiol.2016.02.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 02/03/2016] [Indexed: 11/25/2022]
Abstract
A new series of cysteine-based metal(II) complexes with 2,2'-bipyridine or 1,10-phenanthroline as co-ligand have been prepared and characterized. Their DNA binding and cleavage properties have been studied. The analytical and spectroscopic data of complexes 1-18 reveal that the complexes adopt an octahedral geometry around the central metal ion in which the cysteine is coordinated through NS and NN atoms, respectively. Spectroscopic titration and viscosity measurements reveal that the complexes bind to DNA through an intercalative mode. Electrophoresis measurements exhibit that they cleave pBR322 DNA efficiently in the presence of 3-mercaptopropionic acid (MPA), probably via hydrolytic mechanism with the involvement of (•)OH. The in vitro anticancer activities indicate that the Cu(II) complexes are active against four selected human tumor cell lines. Furthermore, it is remarkable that all the complexes exhibit significant photocytotoxicity against human breast cancer cell lines (MCF-7) with a potency more than the widely used drugs photofrin and cisplatin indicating that they have the potential to act as effective anticancer drugs in a dose-dependent manner.
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Affiliation(s)
| | - Narayanaperumal Pravin
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India
| | - Vellaichamy Muniyandi
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India
| | - Mohammed Nazeer
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India
| | - Natarajan Raman
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India.
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23
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Tu YJ, Mazumder S, Endicott JF, Turro C, Kodanko JJ, Schlegel HB. Selective Photodissociation of Acetonitrile Ligands in Ruthenium Polypyridyl Complexes Studied by Density Functional Theory. Inorg Chem 2015; 54:8003-11. [PMID: 26244447 PMCID: PMC4743049 DOI: 10.1021/acs.inorgchem.5b01202] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Metal complexes that release ligands upon photoexcitation are important tools for biological research and show great potential as highly specific therapeutics. Upon excitation with visible light, [Ru(TQA)(MeCN)2](2+) [TQA = tris(2-quinolinylmethyl)amine] exchanges one of the two acetonitriles (MeCNs), whereas [Ru(DPAbpy)MeCN](2+) [DPAbpy = N-(2,2'-bipyridin-6-yl)-N,N-bis(pyridin-2-ylmethyl)amine] does not release MeCN. Furthermore, [Ru(TQA)(MeCN)2](2+) is highly selective for release of the MeCN that is perpendicular to the plane of the two axial quinolines. Density functional theory calculations provide a clear explanation for the photodissociation behavior of these two complexes. Excitation by visible light and intersystem crossing leads to a six-coordinate (3)MLCT state. Dissociation of acetonitrile can occur after internal conversion to a dissociative (3)MC state, which has an occupied dσ* orbital that interacts in an antibonding fashion with acetonitrile. For [Ru(TQA)(MeCN)2](2+), the dissociative (3)MC state is lower than the (3)MLCT state. In contrast, the (3)MC state of [Ru(DPAbpy)MeCN](2+) that releases acetonitrile has an energy higher than that of the (3)MLCT state, indicating dissociation is unfavorable. These results are consistent with the experimental observations that efficient photodissociation of acetonitrile occurs for [Ru(TQA)(MeCN)2](2+) but not for [Ru(DPAbpy)MeCN](2+). For the release of the MeCN ligand in [Ru(TQA)(MeCN)2](2+) that is perpendicular to the axial quinoline rings, the (3)MLCT state has an occupied quinoline π* orbital that can interact with a dσ* Ru-NCCH3 antibonding orbital as the Ru-NCCH3 bond is stretched and the quinolines bend toward the departing acetonitrile. This reduces the barrier for the formation of the dissociative (3)MC state, leading to the selective photodissociation of this acetonitrile. By contrast, when the acetonitrile is in the plane of the quinolines or bpy, no interaction occurs between the ligand π* orbital and the dσ* Ru-NCCH3 orbital, resulting in high barriers for conversion to the corresponding (3)MC structures and no release of acetonitrile.
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Affiliation(s)
- Yi-Jung Tu
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Shivnath Mazumder
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - John F. Endicott
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Claudia Turro
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Jeremy J. Kodanko
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - H. Bernhard Schlegel
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
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24
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Sanz García J, Alary F, Boggio-Pasqua M, Dixon IM, Malfant I, Heully JL. Establishing the Two-Photon Linkage Isomerization Mechanism in the Nitrosyl Complex trans-[RuCl(NO)(py)4]2+ by DFT and TDDFT. Inorg Chem 2015; 54:8310-8. [DOI: 10.1021/acs.inorgchem.5b00998] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juan Sanz García
- Laboratoire
de Chimie et Physique Quantiques, UMR 5626, IRSAMC, CNRS et Université de Toulouse, 118 route de Narbonne, 31062 Toulouse, France
| | - Fabienne Alary
- Laboratoire
de Chimie et Physique Quantiques, UMR 5626, IRSAMC, CNRS et Université de Toulouse, 118 route de Narbonne, 31062 Toulouse, France
| | - Martial Boggio-Pasqua
- Laboratoire
de Chimie et Physique Quantiques, UMR 5626, IRSAMC, CNRS et Université de Toulouse, 118 route de Narbonne, 31062 Toulouse, France
| | - Isabelle M. Dixon
- Laboratoire
de Chimie et Physique Quantiques, UMR 5626, IRSAMC, CNRS et Université de Toulouse, 118 route de Narbonne, 31062 Toulouse, France
| | - Isabelle Malfant
- Laboratoire
de Chimie de Coordination, CNRS UPR 8241, 205 route de Narbonne, 31077 Toulouse, France
| | - Jean-Louis Heully
- Laboratoire
de Chimie et Physique Quantiques, UMR 5626, IRSAMC, CNRS et Université de Toulouse, 118 route de Narbonne, 31062 Toulouse, France
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25
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Marcolongo JP, Weyhermüller T, Slep LD. Exploring the photo-stability of the {Ru(py)4}2+ fragment. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.12.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Wang J, Pan H, Liu J, Zhao Y, Wu Y, Wang H. Structures and spectroscopic properties of three [Ru(OAc)(2mqn)2NO] (H2mqn=2-methyl-8-quinolinol) isomers: An experimental and density functional theoretical insight. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.01.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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27
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Freitag L, Knecht S, Keller SF, Delcey MG, Aquilante F, Pedersen TB, Lindh R, Reiher M, González L. Orbital entanglement and CASSCF analysis of the Ru-NO bond in a Ruthenium nitrosyl complex. Phys Chem Chem Phys 2015; 17:14383-92. [PMID: 25767830 PMCID: PMC4447059 DOI: 10.1039/c4cp05278a] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Multiconfigurational wavefunction analysis and entanglement measures based on von Neumann entropy shed light on the electronic structure of a Ru nitrosyl complex, in particular on the Ru–NO bond.
Complete active space self-consistent field (CASSCF) wavefunctions and an orbital entanglement analysis obtained from a density-matrix renormalisation group (DMRG) calculation are used to understand the electronic structure, and, in particular, the Ru–NO bond of a Ru nitrosyl complex. Based on the configurations and orbital occupation numbers obtained for the CASSCF wavefunction and on the orbital entropy measurements evaluated for the DMRG wavefunction, we unravel electron correlation effects in the Ru coordination sphere of the complex. It is shown that Ru–NO π bonds show static and dynamic correlation, while other Ru–ligand bonds feature predominantly dynamic correlation. The presence of static correlation requires the use of multiconfigurational methods to describe the Ru–NO bond. Subsequently, the CASSCF wavefunction is analysed in terms of configuration state functions based on localised orbitals. The analysis of the wavefunctions in the electronic singlet ground state and the first triplet state provides a picture of the Ru–NO moiety beyond the standard representation based on formal oxidation states. A distinct description of the Ru and NO fragments is advocated. The electron configuration of Ru is an equally weighted superposition of RuII and RuIII configurations, with the RuIII configuration originating from charge donation mostly from Cl ligands. However, and contrary to what is typically assumed, the electronic configuration of the NO ligand is best described as electroneutral.
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Affiliation(s)
- Leon Freitag
- Institut für theoretische Chemie, Universität Wien, Währinger Str. 17, 1090 Vienna, Austria.
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28
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Sharma R, Knoll JD, Ancona N, Martin PD, Turro C, Kodanko JJ. Solid-phase synthesis as a platform for the discovery of new ruthenium complexes for efficient release of photocaged ligands with visible light. Inorg Chem 2015; 54:1901-11. [PMID: 25611351 DOI: 10.1021/ic502791y] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Ruthenium-based photocaging groups have important applications as biological tools and show great potential as therapeutics. A method was developed to rapidly synthesize, screen, and identify ruthenium-based caging groups that release nitriles upon irradiation with visible light. A diverse library of tetra- and pentadentate ligands was synthesized on polystyrene resin. Ruthenium complexes of the general formula [Ru(L)(MeCN)n](m+) (n = 1-3, m = 1-2) were generated from these ligands on solid phase and then cleaved from resin for photochemical analysis. Data indicate a wide range of spectral tuning and reactivity with visible light. Three complexes that showed strong absorbance in the visible range were synthesized by solution phase for comparison. Photochemical behavior of solution- and solid-phase complexes was in good agreement, confirming that the library approach is useful in identifying candidates with desired photoreactivity in short order, avoiding time-consuming chromatography and compound purification.
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Affiliation(s)
- Rajgopal Sharma
- Department of Chemistry, Wayne State University , 5101 Cass Avenue, Detroit, Michigan 48202, United States
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29
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Knoll JD, Turro C. Control and utilization of ruthenium and rhodium metal complex excited states for photoactivated cancer therapy. Coord Chem Rev 2015; 282-283:110-126. [PMID: 25729089 PMCID: PMC4343038 DOI: 10.1016/j.ccr.2014.05.018] [Citation(s) in RCA: 314] [Impact Index Per Article: 34.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The use of visible light to produce highly selective and potent drugs through photodynamic therapy (PDT) holds much potential in the treatment of cancer. PDT agents can be designed to follow an O2-dependent mechanism by producing highly reactive species such as 1O2 and/or an O2 independent mechanism through processes such as excited state electron transfer, covalent binding to DNA or photoinduced drug delivery. Ru(II)-polypyridyl and Rh2(II,II) complexes represent an important class of compounds that can be tailored to exhibit desired photophysical properties and photochemical reactivity by judicious selection of the ligand set. Complexes with relatively long-lived excited states and planar, intercalating ligands localize on the DNA strand and photocleave DNA through 1O2 production or guanine oxidation by the excited state of the chromophore. Photoinduced ligand substitution occurs through the population of triplet metal centered (3MC) excited states and facilitates covalent binding of the metal complex to DNA in a mode similar to cisplatin. Ligand photodissociation also provides a route to selective drug delivery. The ability to construct metal complexes with desired light absorbing and excited state properties by ligand variation enables the design of PDT agents that can potentially provide combination therapy from a single metal complex.
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Affiliation(s)
- Jessica D. Knoll
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, USA
| | - Claudia Turro
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, USA
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30
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Wang J, Yang F, Zhao Y, Yu P, Qiao X, Wang J, Wang H. Photoisomerization and structural dynamics of two nitrosylruthenium complexes: a joint study by NMR and nonlinear IR spectroscopies. Phys Chem Chem Phys 2014; 16:24045-54. [PMID: 25285659 DOI: 10.1039/c4cp02298j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, the photoisomerization and structural dynamics of two isomeric nitrosylruthenium(ii) complexes [Ru(OAc)(2cqn)2NO] (H2cqn = 2-chloro-8-quinolinol) in CDCl3 and DMSO are examined using NMR and IR spectroscopic methods. The two N atoms in the 2cqn ligand are in trans position in the synthesized cis-1 isomer, while they are in cis position in the cis-2 isomer. Kinetics monitored by NMR spectroscopy shows that the rate constant of photoisomerization from cis-2 to cis-1 isomer depends on the wavelength of irradiation and solvent polarity; it proceeds faster on irradiating near the absorption peak in the UV-Vis region, and also in more polar solvents (DMSO). Density functional theory computation indicates that the peculiarity of [Ru(ii)-NO(+)] group affects the structure and reactivity of the nitrosylruthenium complexes. Using the nitrosyl stretching (νNO) to be vibrational probe, the structural dynamics and structural distributions of the cis-1 and cis-2 isomers are examined by steady-state linear infrared and ultrafast two-dimensional infrared (2D IR) spectroscopies. The structural and photochemical aspects of the observed spectroscopic parameters are discussed in terms of solute-solvent interactions for the two nitrosylruthenium complexes.
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Affiliation(s)
- Jianru Wang
- State Key Lab of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China.
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31
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Carrone G, Gantov F, Slep LD, Etchenique R. Fluorescent Ligands and Energy Transfer in Photoactive Ruthenium–Bipyridine Complexes. J Phys Chem A 2014; 118:10416-24. [DOI: 10.1021/jp504030f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Guillermo Carrone
- Departamento de Química
Inorgánica, Analítica y Química Física,
INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón 2, AR1428EHA Buenos Aires, Argentina
| | - Federico Gantov
- Departamento de Química
Inorgánica, Analítica y Química Física,
INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón 2, AR1428EHA Buenos Aires, Argentina
| | - Leonardo D. Slep
- Departamento de Química
Inorgánica, Analítica y Química Física,
INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón 2, AR1428EHA Buenos Aires, Argentina
| | - Roberto Etchenique
- Departamento de Química
Inorgánica, Analítica y Química Física,
INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón 2, AR1428EHA Buenos Aires, Argentina
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32
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Bučinský L, Kucková L, Malček M, Kožíšek J, Biskupič S, Jayatilaka D, Büchel GE, Arion VB. Picture change error in quasirelativistic electron/spin density, Laplacian and bond critical points. Chem Phys 2014. [DOI: 10.1016/j.chemphys.2014.04.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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33
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Freitag L, González L. Theoretical spectroscopy and photodynamics of a ruthenium nitrosyl complex. Inorg Chem 2014; 53:6415-26. [PMID: 24745977 DOI: 10.1021/ic500283y] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Photoactive transition-metal nitrosyl complexes are particularly interesting as potential drugs that deliver nitric oxide (NO) upon UV-light irradiation to be used, e.g., in photodynamic therapy. It is well-recognized that quantum-chemical calculations can guide the rational design and synthesis of molecules with specific functions. In this contribution, it is shown how electronic structure calculations and dynamical simulations can provide a unique insight into the photodissociation mechanism of NO. Exemplarily, [Ru(PaPy3)(NO)](2+) is investigated in detail, as a prototype of a particularly promising class of photoactive metal nitrosyl complexes. The ability of time-dependent density functional theory (TD-DFT) to obtain reliable excited-state energies compared with more sophisticated multiconfigurational spin-corrected calculations is evaluated. Moreover, a TD-DFT-based trajectory surface-hopping molecular dynamics study is employed to reveal the details of the radiationless decay of the molecule via internal conversion and intersystem crossing. Calculations show that the ground state of [Ru(PaPy3)(NO)](2+) includes a significant admixture of the Ru(III)(NO)(0) electronic configuration, in contrast to the previously postulated Ru(II)(NO)(+) structure of similar metal nitrosyls. Moreover, the lowest singlet and triplet excited states populate the antibonding metal d → πNO* orbitals, favoring NO dissociation. Molecular dynamics show that intersystem crossing is ultrafast (<10 fs) and dissociation is initiated in less than 50 fs. The competing relaxation to the lowest S1 singlet state takes place in less than 100 fs and thus competes with NO dissociation, which mostly takes place in the higher-lying excited triplet states. All of these processes are accompanied by bending of the NO ligand, which is not confined to any particular state.
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Affiliation(s)
- Leon Freitag
- Institut für theoretische Chemie, Universität Wien , Währinger Straße 17, 1090 Vienna, Austria
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34
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Palmer AM, Burya SJ, Gallucci JC, Turro C. Photoinduced Intercalation and Coordination of a Dirhodium Complex to DNA: Dual DNA Binding. ChemMedChem 2014; 9:1260-5. [DOI: 10.1002/cmdc.201402004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Indexed: 12/26/2022]
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35
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Nitrosyl-Centered Redox and Acid–Base Interconversions in [Ru(Me3[9]aneN3)(bpy)(NO)]3,2,1+. The pKa of HNO for its Nitroxyl Derivative in Aqueous Solution. Inorg Chem 2014; 53:981-97. [DOI: 10.1021/ic402448p] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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36
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Garino C, Salassa L. The photochemistry of transition metal complexes using density functional theory. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2013; 371:20120134. [PMID: 23776295 DOI: 10.1098/rsta.2012.0134] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The use of density functional theory (DFT) and time-dependent DFT (TD-DFT) to study the photochemistry of metal complexes is becoming increasingly important among chemists. Computational methods provide unique information on the electronic nature of excited states and their atomic structure, integrating spectroscopy observations on transient species and excited-state dynamics. In this contribution, we present an overview on photochemically active transition metal complexes investigated by DFT. In particular, we discuss a representative range of systems studied up to now, which include CO- and NO-releasing inorganic and organometallic complexes, haem and haem-like complexes dissociating small diatomic molecules, photoactive anti-cancer Pt and Ru complexes, Ru polypyridyls and diphosphino Pt derivatives.
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Affiliation(s)
- Claudio Garino
- Department of Chemistry and NIS Centre of Excellence, University of Turin, via P. Giuria 7, 10125 Turin, Italy
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37
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Bučinský L, Büchel GE, Ponec R, Rapta P, Breza M, Kožíšek J, Gall M, Biskupič S, Fronc M, Schiessl K, Cuzan O, Prodius D, Turta C, Shova S, Zając DA, Arion VB. On the Electronic Structure ofmer,trans-[RuCl3(1H-indazole)2(NO)], a Hypothetical Metabolite of the Antitumor Drug Candidate KP1019: An Experimental and DFT Study. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201526] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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38
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Figueiredo LE, Cilli EM, Molina RAS, Espreafico EM, Tfouni E. Synthesis and cytotoxicity of a ruthenium nitrosyl nitric oxide donor with isonicotinic acid and a cell penetrating peptide. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2012.11.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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39
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Osa Codesido N, De Candia AG, Weyhermüller T, Olabe JA, Slep LD. An Electron-Rich {RuNO}6 Complex: trans-[Ru(DMAP)4(NO)(OH)]2+ - Structure and Reactivity. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200413] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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40
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Zheng W, Wu S, Zhao S, Geng Y, Jin J, Su Z, Fu Q. Carbonyl Amine/Schiff Base Ligands in Manganese Complexes: Theoretical Study on the Mechanism, Capability of NO Release. Inorg Chem 2012; 51:3972-80. [DOI: 10.1021/ic2011953] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Weili Zheng
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Shuixing Wu
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Shanshan Zhao
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Yun Geng
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Junling Jin
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Zhongmin Su
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Qiang Fu
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
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Merkle AC, McQuarters AB, Lehnert N. Synthesis, spectroscopic analysis and photolabilization of water-soluble ruthenium(iii)–nitrosyl complexes. Dalton Trans 2012; 41:8047-59. [DOI: 10.1039/c2dt30464c] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Tfouni E, Truzzi DR, Tavares A, Gomes AJ, Figueiredo LE, Franco DW. Biological activity of ruthenium nitrosyl complexes. Nitric Oxide 2012; 26:38-53. [DOI: 10.1016/j.niox.2011.11.005] [Citation(s) in RCA: 133] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 11/29/2011] [Accepted: 11/30/2011] [Indexed: 12/20/2022]
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43
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Song W, Kristian KE, Bakac A. Visible Light‐Induced Release of Nitrogen Monoxide from a Nitrosylrhodium Complex. Chemistry 2011; 17:4513-7. [DOI: 10.1002/chem.201003003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Indexed: 11/11/2022]
Affiliation(s)
- Wenjing Song
- Iowa State University, Ames, IA 50011 (USA), Fax: (+1) 515‐294‐5233
| | | | - Andreja Bakac
- Iowa State University, Ames, IA 50011 (USA), Fax: (+1) 515‐294‐5233
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Doro FG, Pepe IM, Galembeck SE, Carlos RM, da Rocha ZN, Bertotti M, Tfouni E. Reactivity, photolability, and computational studies of the ruthenium nitrosyl complex with a substituted cyclam fac-[Ru(NO)Cl2(κ3N4,N8,N11(1-carboxypropyl)cyclam)]Cl·H2O. Dalton Trans 2011; 40:6420-32. [DOI: 10.1039/c0dt01541e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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