1
|
Dinuclear Reactivity of One Metal Exalted by the Second One. TOP ORGANOMETAL CHEM 2023. [DOI: 10.1007/3418_2022_80] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
2
|
Arnal L, Escudero D, Fuertes S, Martin A, Sicilia V. High-Valent Pyrazolate-Bridged Platinum Complexes: A Joint Experimental and Theoretical Study. Inorg Chem 2022; 61:12559-12569. [PMID: 35925811 PMCID: PMC9387385 DOI: 10.1021/acs.inorgchem.2c01441] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Complexes [{Pt(C^C*)(μ-pz)}2] (HC^C*A = 1-(4-(ethoxycarbonyl)phenyl)-3-methyl-1H-imidazol-2-ylidene 1a, HC^C*B = 1-phenyl-3-methyl-1H-imidazol-2-ylidene 1b) react with methyl
iodide (MeI)
at room temperature in the dark to give compounds [{PtIV(C^C*)Me(μ-pz)}2(μ-I)]I (C^C*A2a, C^C*B2b). The reaction of 1a with benzyl bromide (BnBr) in the same conditions afforded
[Br(C^C*A)PtIII(μ-pz)2PtIII(C^C*A)Bn] (5a), which by heating
in BnBr(l) became [{PtIV(C^C*A)Bn(μ-pz)}2(μ-Br)]Br (6a). Experimental investigations
and density functional theory (DFT) calculations on the mechanisms
of these reactions from 1a revealed that they follow
a SN2 pathway in the two steps of the double oxidative
addition (OA). Based on the DFT investigations, species such as [(C^C*A)PtIII(μ-pz)2PtIII(C^C*A)R]X (RX = MeI Int-Me, BnBr Int-Bn) and [(C^C*A)PtII(μ-pz)2PtIV(C^C*A)(R)X] (RX = MeI Int′-Me, BnBr Int′-Bn) were proposed as intermediates
for the first and the second OA reactions, respectively. In order
to put the mechanisms on firmer grounds, Int-Me was prepared
as [(C^C*A)PtIII(μ-pz)2PtIII(C^C*A)Me]BF4 (3a′) and used to get [I(C^C*A)PtIII(μ-pz)2PtIII(C^C*A)Me](4a), [(C^C*A)PtII(μ-pz)2PtIV(C^C*A)(Me)I](Int′-Me), and [{PtIV(C^C*)Me(μ-pz)}2(μ-I)]BF4 (2a′). The single-crystal X-ray structures of 2a, 2b, 3a′, and 5a along with the mono- and bi-dimensional 1H and 195Pt{1H} NMR spectra of all the named species allowed us
to compare structural and spectroscopic data for high-valent complexes
with the same core [{Pt(C^C*)(μ-pz)}2] but different
oxidation states. Experimental
and theoretical
investigations on the mechanisms
of OA reactions of MeI and BnBr to [{PtII(C^C*)(μ-pz)}2] allowed us to get high-valent pyrazolate-bridged platinum
compounds: Pt2(III,III), Pt2(II,IV), and Pt2(IV,IV). Their stability and structural and spectroscopic
features have been compared.
Collapse
Affiliation(s)
- Lorenzo Arnal
- Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Daniel Escudero
- Department of Chemistry, KU Leuven, Celestijnenlaan 200f - box 2404, 3001 Leuven, Belgium
| | - Sara Fuertes
- Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Antonio Martin
- Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Violeta Sicilia
- Departamento de Química Inorgánica, Escuela de Ingeniería y Arquitectura de Zaragoza, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Campus Rio Ebro, Edificio Torres Quevedo, 50018 Zaragoza, Spain
| |
Collapse
|
3
|
Nabavizadeh SM, Molaee H, Haddadi E, Niroomand Hosseini F, Hoseini SJ, Abu-Omar MM. Tetranuclear rollover cyclometalated organoplatinum-rhenium compounds; C-I oxidative addition and C-C reductive elimination using a rollover cycloplatinated dimer. Dalton Trans 2021; 50:15015-15026. [PMID: 34609403 DOI: 10.1039/d1dt02086b] [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
The novel tetranuclear Pt(IV)-Re(VII) complex [Pt2Me4(OReO3)2(PMePh2)2(µ-bpy-2H)], 4, is synthesized through the reaction of silver perrhenate with a new rollover cycloplatinated(IV) complex [Pt2Me4I2(PMePh2)2(µ-bpy-2H)], 3. In complex 4, while 2,2'-bipyridine (bpy) acts as a linker between two Pt metal centers, oxygen acts as a mono-bridging atom between Pt and Re centers through an unsupported Pt(IV)-O-Re(VII) bridge. The precursor rollover cycloplatinated(IV) complex 3 is prepared by the MeI oxidative addition reaction of the rollover cycloplatinated(II) complex [Pt2Me2(PMePh2)2(µ-bpy-2H)], 2. Complex 2 shows a metal-to-ligand charge-transfer band in the visible region, which was used to investigate the kinetics and mechanism of its double MeI oxidative addition reaction. Based on the experimental findings, the classical SN2 mechanism was suggested for both steps and supported by computational studies. All complexes are fully characterized using multinuclear NMR spectroscopy and elemental analysis. Attempts to grow crystals of the rollover cycloplatinated(IV) dimer 3 yielded a new dimer rollover cyclometalated complex [Pt2I2(PMePh2)2(µ-bpy-2H)], 5, presumably from the C-C reductive elimination of ethane. The identity of complex 5 was confirmed by single crystal X-ray diffraction analysis.
Collapse
Affiliation(s)
- S Masoud Nabavizadeh
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran.
| | - Hajar Molaee
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran.
| | - Elahe Haddadi
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran.
| | | | - S Jafar Hoseini
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran.
| | - Mahdi M Abu-Omar
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA.
| |
Collapse
|
4
|
Mandegani Z, Nahaei A, Nikravesh M, Nabavizadeh SM, Shahsavari HR, Abu-Omar MM. Synthesis and Characterization of RhIII–MII (M = Pt, Pd) Heterobimetallic Complexes Based on a Bisphosphine Ligand: Tandem Reactions Using Ethanol. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00594] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Zeinab Mandegani
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
| | - Asma Nahaei
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
| | - Mahshid Nikravesh
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - S. Masoud Nabavizadeh
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
| | - Hamid R. Shahsavari
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Mahdi M. Abu-Omar
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| |
Collapse
|
5
|
Sicilia V, Arnal L, Fuertes S, Martín A, Baya M. Metal-Metal Cooperation in the Oxidation of a Flapping Platinum Butterfly by Haloforms: Experimental and Theoretical Evidence. Inorg Chem 2020; 59:12586-12594. [PMID: 32815727 DOI: 10.1021/acs.inorgchem.0c01701] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The model 1-DFT for the butterfly complex [{Pt(C∧C*)(μ-pz)}2] (1; HC∧C* = 1-(4-(ethoxycarbonyl)phenyl)-3-methyl-1H-imidazol-2-ylidene) shows two minima in the potential energy surface of the ground state in acetone solution: the butterfly-wing-spreading molecules 1-s, (dPt-Pt ≈ 3.20 Å) and the wing-folding molecules 1-f (dPt-Pt ≤ 3.00 Å). Both minima are very close in energy (ΔG° = 1.7 kcal/mol) and are connected through a transition state, which lies only 1.9 kcal/mol above 1-s and 0.2 kcal/mol above 1-f. These very low barriers support a fast interconversion process, resembling a butterfly flapping, and the presence of both conformers in acetone solution. However, the 1-f ratio is so low that it is undetectable in the excitation and emission spectra of 1 in 2-MeTHF of diluted solutions (10-5 M) at 77 K, while it is seen in more concentrated solutions (10-3 M). In acetone solution, 1 undergoes a [2c, 2e] oxidation by CHX3 (X = Cl, Br) in the sunlight to render the Pt2(III,III) compounds [{Pt(C∧C*)(μ-pz)X)}2] (X = Cl (2-Cl), Br (2-Br)). In concentrated solutions, 1 can react with CHCl3 under blue light to give 2-Cl and with CHBr3 in the dark, the latter rendering the compound [BrPt(C∧C*)(μ-pz)2Pt(C∧C*)CHBr2] (3-Br) or mixtures of 2-Br and 3-Br if the reaction is performed under an argon atmosphere or in the air, respectively. Mechanistic studies showed that in concentrated solutions the oxidation processes follow a radical mechanism being the MMLCT-based species 1-f, those which trigger the reaction of 1 with CHBr3 and CHCl3. In the ground state (S0f), it promotes the thermal oxidation of 1 by CHBr3 and in the first singlet excited state (S1f) the blue-light-driven photooxidation of 1 by CHCl3. Complexes, 2-Cl, 2-Br, and 3-Br were selectively obtained and fully characterized, showing Pt-Pt distances (ca. 2.6 Å) shorter than that of the starting complex, 1. They are, together with the analogous [{Pt(C∧C*)(μ-pz)I)}2] and [IPt(C∧C*)(μ-pz)2Pt(C∧C*)CHI2], the only dinuclear metal-metal-bonded PtIII(μ-pz)2PtIII compounds reported to date.
Collapse
Affiliation(s)
- Violeta Sicilia
- Departamento de Química Inorgánica, Escuela de Ingeniería y Arquitectura de Zaragoza, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Campus Río Ebro, Edificio Torres Quevedo, 50018 Zaragoza, Spain
| | - Lorenzo Arnal
- Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Sara Fuertes
- Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Antonio Martín
- Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Miguel Baya
- Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| |
Collapse
|
6
|
Shahsavari HR, Aghakhanpour RB, Hossein-Abadi M, Kia R, Raithby PR. Stable transisomer as the kinetic and theromodynamic product for the oxidative addition of MeI to cycloplatinated(II) complexes comprising isocyanide ligands. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4216] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hamid R. Shahsavari
- Department of Chemistry; Institute for Advanced Studies in Basic Sciences (IASBS); Yousef Sobouti Blvd Zanjan 45137-66731 Iran
| | - Reza Babadi Aghakhanpour
- Department of Chemistry; Institute for Advanced Studies in Basic Sciences (IASBS); Yousef Sobouti Blvd Zanjan 45137-66731 Iran
| | - Mojdeh Hossein-Abadi
- Department of Chemistry; Institute for Advanced Studies in Basic Sciences (IASBS); Yousef Sobouti Blvd Zanjan 45137-66731 Iran
| | - Reza Kia
- Chemistry Department; Sharif University of Technology; P.O. Box 11155-3516 Tehran Iran
| | - Paul R. Raithby
- Department of Chemistry; University of Bath; Claverton Down BA2 7AY Bath UK
| |
Collapse
|
7
|
Shahsavari HR, Babadi Aghakhanpour R, Fereidoonnezhad M. An in-depth investigation on the C–I bond activation by rollover cycloplatinated(ii) complexes bearing monodentate phosphane ligands: kinetic and kinetic isotope effect. NEW J CHEM 2018. [DOI: 10.1039/c7nj04159d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The oxidative addition reaction of MeI reagent to some cycloplatinated(ii) complexes was performed and kinetically investigated.
Collapse
Affiliation(s)
- Hamid R. Shahsavari
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences (IASBS)
- Zanjan
- Iran
| | | | - Masood Fereidoonnezhad
- Department of Medicinal Chemistry
- School of Pharmacy
- Toxicology Research Center
- Ahvaz Jundishapur University of Medical Sciences
- Ahvaz
| |
Collapse
|
8
|
Shahsavari HR, Babadi Aghakhanpour R, Hossein-Abadi M, Kia R, Halvagar MR, Raithby PR. Reactivity of a new aryl cycloplatinated(ii) complex containing rollover 2,2′-bipyridine N-oxide toward a series of diphosphine ligands. NEW J CHEM 2018. [DOI: 10.1039/c8nj00713f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new rollover cycloplatinated(ii) complex was prepared. The reactivity of this complex was investigated towards a wide range of diphosphine ligands.
Collapse
Affiliation(s)
- Hamid R. Shahsavari
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences (IASBS)
- Zanjan 45137-66731
- Iran
| | - Reza Babadi Aghakhanpour
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences (IASBS)
- Zanjan 45137-66731
- Iran
| | - Mojdeh Hossein-Abadi
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences (IASBS)
- Zanjan 45137-66731
- Iran
| | - Reza Kia
- Chemistry Department
- Sharif University of Technology
- Tehran
- Iran
| | | | | |
Collapse
|
9
|
Shahsavari HR, Babadi Aghakhanpour R, Babaghasabha M, Golbon Haghighi M, Nabavizadeh SM, Notash B. Combined Kinetico‐Mechanistic and Theoretical Elucidation of the Oxidative Addition of Iodomethane to Cycloplatinated(II) Complexes: Controlling the Rate of
trans/cis
Isomerization. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700088] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hamid R. Shahsavari
- Department of Chemistry Institute for Advanced Studies in Basic Sciences (IASBS) Yousef Sobouti Blvd. 45137‐6731 Zanjan Iran
| | - Reza Babadi Aghakhanpour
- Department of Chemistry Institute for Advanced Studies in Basic Sciences (IASBS) Yousef Sobouti Blvd. 45137‐6731 Zanjan Iran
- Department of Chemistry College of Sciences Shiraz University 71454 Shiraz Iran
| | - Mojgan Babaghasabha
- Department of Chemistry Institute for Advanced Studies in Basic Sciences (IASBS) Yousef Sobouti Blvd. 45137‐6731 Zanjan Iran
| | | | | | - Behrouz Notash
- Department of Chemistry Shahid Beheshti University Evin 19839‐69411 Tehran Iran
| |
Collapse
|
10
|
Sangari MS, Haghighi MG, Nabavizadeh SM, Kubicki M, Rashidi M. Photophysical study on unsymmetrical binuclear cycloplatinated(ii) complexes. NEW J CHEM 2017. [DOI: 10.1039/c7nj03034g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A general synthetic method has been designed to prepare a new series of unsymmetrical binuclear cyclometalated organoplatinum(ii) complexes and the effect of each part on their luminescence properties were investigated.
Collapse
Affiliation(s)
| | | | | | - Maciej Kubicki
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznan
- Poland
| | - Mehdi Rashidi
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71467-13565
- Iran
| |
Collapse
|
11
|
Nabavizadeh SM, Sepehrpour H, Jamshidi M, Hosseini FN, Owczarzak AM, Kubicki M. Binuclear organoplatinum(II) complexes with double bis(diphenylphosphino)acetylene bridges: Synthesis, X-ray structure determination, electronic structures and DFT calculations. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.02.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
12
|
Niroomand Hosseini F. Theoretical studies of methyl iodide oxidative addition to adjacent metal centers in diplatinum(II) complexes. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.07.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
13
|
Secondary kinetic deuterium isotope effect in oxidative addition reaction of cycloplatinated(II) complexes with MeI. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.06.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
14
|
Darani FA, Esmaeilbeig AR, Hosseini FN, Nabavizadeh SM. Behavior of the bischelate platinum(II) complexes [Pt(S^N)(C^N)] (S^N = pyridine-2-thionate, C^N = 2-phenylpyridinate or benzo[h]quinolate) toward C–I bond activation; a DFT study. Struct Chem 2015. [DOI: 10.1007/s11224-014-0555-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
15
|
Sicilia V, Baya M, Borja P, Martín A. Oxidation of Half-Lantern Pt2(II,II) Compounds by Halocarbons. Evidence of Dioxygen Insertion into a Pt(III)-CH3 Bond. Inorg Chem 2015. [PMID: 26197039 DOI: 10.1021/acs.inorgchem.5b00846] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The half-lantern compound [{Pt(bzq)(μ-N^S)}2] (1) [bzq = benzo[h]quinoline, HN^S = 2-mercaptopyrimidine (C4H3N2HS)] reacts with CH3I and haloforms CHX3 (X = Cl, Br, I) to give the corresponding oxidized diplatinum(III) derivatives [{Pt(bzq)(μ-N^S)X}2] (X = Cl 2a, Br 2b, I 2c). These compounds exhibit half-lantern structures with short intermetallic distances (∼2.6 Å) due to Pt-Pt bond formation. The halogen abstraction mechanisms from the halocarbon molecules by the Pt2(II,II) compound 1 were investigated. NMR spectroscopic evidence using labeled reagents support that in the case of (13)CH3I the reaction initiates with an oxidative addition through an SN2 mechanism giving rise to the intermediate species [I(bzq)Pt(μ-N^S)2Pt(bzq)((13)CH3)}]. However, with haloforms the reactions proceed through a radical-like mechanism, thermally (CHBr3, CHI3) or photochemically (CHCl3) activated, giving rise to mixtures of species [X(bzq)Pt(μ-N^S)2Pt(bzq)R] (3a-c) and [X(bzq)Pt(μ-N^S)2Pt(bzq)X] (2a-c). In these cases the presence of O2 favors the formation of species 2 over 3. Transformation of 3 into 2 was possible upon irradiation with UV light. In the case of [I(bzq)Pt(μ-N^S)2Pt(bzq)((13)CH3)}] (3d), in the presence of O2 the formation of the unusual methylperoxo derivative [I(bzq)Pt(μ-N^S)2Pt(bzq)(O-O(13)CH3)}] (4d) was detected, which in the presence of (13)CH3I rendered the final product [{Pt(bzq)(μ-N^S)I}2] (2c) and (13)CH3OH.
Collapse
Affiliation(s)
- V Sicilia
- †Departamento de Química Inorgánica, Escuela de Ingeniería y Arquitectura de Zaragoza, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Campus Río Ebro, Edificio Torres Quevedo, 50018 Zaragoza, Spain
| | - M Baya
- ‡Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - P Borja
- ‡Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - A Martín
- ‡Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| |
Collapse
|
16
|
A kinetic approach to carbon–iodide bond activation by rollover cycloplatinated(II) complexes containing monodentate phosphine ligands. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.01.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
17
|
Raoof F, Boostanizadeh M, Esmaeilbeig AR, Nabavizadeh SM, Aghakhanpour RB, Ghiassi KB, Olmstead MM, Balch AL. Reactivity comparison of five-and six-membered cyclometalated platinum(ii) complexes in oxidative addition reactions. RSC Adv 2015. [DOI: 10.1039/c5ra17421j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
A six-membered cyclometalated complex [PtMe(bzpy)(PPh3)] (bzpy = 2-benzylpyridinate) undergoes oxidative addition with methyl iodide to give [PtMe2I(bzpy)(PPh3)]. The ring size of the chelating unit has a significant impact on the rate of the reaction.
Collapse
Affiliation(s)
- Fatemeh Raoof
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71467-13565
- Iran
| | - Maryam Boostanizadeh
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71467-13565
- Iran
| | - Ahmad R. Esmaeilbeig
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71467-13565
- Iran
| | | | | | | | | | - Alan L. Balch
- Department of Chemistry
- University of California
- Davis
- USA
| |
Collapse
|
18
|
Aghakhanpour RB, Rashidi M, Hosseini FN, Raoof F, Nabavizadeh SM. Oxidation of a rollover cycloplatinated(ii) dimer by MeI: a kinetic study. RSC Adv 2015. [DOI: 10.1039/c5ra12201e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The known rollover cycloplatinated(ii) complex [Pt2Me2(PPh3)2(μ-bpy-2H)], 1, in which bpy-2H acts as a bridging rollover ligand, reacts with MeI to give a new binuclear rollover cycloplatinated(iv) complex [Pt2Me4I2(PPh3)2(μ-bpy-2H)], 2.
Collapse
Affiliation(s)
| | - Mehdi Rashidi
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz
- Iran
| | | | - Fatemeh Raoof
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz
- Iran
| | | |
Collapse
|
19
|
Aseman MD, Nabavizadeh SM, Shahsavari HR, Rashidi M. C–H reductive elimination during the reaction of cycloplatinated(ii) complexes with pyridine-2-thione: kinetic follow up. RSC Adv 2015. [DOI: 10.1039/c5ra01341k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Reactions of the cycloplatinated(ii) complexes [PtR(ppy)(SMe2)], 1, where ppy = deprotonated 2-phenylpyridine and R = Me or p-MeC6H4, with pyridine-2-thione, C5H5SN, were studied by UV-vis and 1H NMR spectroscopies and on the basis of the data a mechanism is proposed.
Collapse
Affiliation(s)
| | | | - Hamid R. Shahsavari
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences
- Zanjan
- Iran
| | - Mehdi Rashidi
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71467-13565
- Iran
| |
Collapse
|
20
|
Kinetico-mechanistic studies on CX (X=H, F, Cl, Br, I) bond activation reactions on organoplatinum(II) complexes. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.06.010] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|