1
|
Three half-sandwiched iron(II) monocarbonyl complexes with PNP ligands: Their chemistry upon reduction and catalysis on proton reduction. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
2
|
Luo J, Cui C, Xiao Z, Zhong W, Lu C, Jiang X, Li X, Liu X. Iron(0) tricarbonyl η 4-1-azadiene complexes and their catalytic performance in the hydroboration of ketones, aldehydes and aldimines via a non-iron hydride pathway. Dalton Trans 2022; 51:11558-11566. [PMID: 35848404 DOI: 10.1039/d2dt01673g] [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
Six iron(0) tricarbonyl complexes (1a-f) with a η4-1-azadiene moiety were prepared and their performance in the hydroboration of unsaturated organic compounds was investigated. All the complexes exhibit catalytic activity towards hydroboration of ketones, aldehydes and aldimines with pinacolborane (HBpin) as a hydride source to lead to secondary alcohols, primary alcohols, and secondary amines, respectively, after hydrolysis of the hydroboration products. Of the iron(0) tricarbonyl complexes, complex 1e is the most robust one and was employed throughout the catalytic investigation. Its preference towards the three types of substrates is as follows: aldimines > aldehydes ≫ ketones. In total, 24 substrates were examined for the catalytic hydroboration reactivity and generally, isolation yields ranging from 40% to 95% were achieved. Mechanistic investigation suggests that the catalytic hydroboration of the substrates proceeds via intramolecular hydride transfer without going through an Fe-H intermediate. As indicated by 1H NMR spectroscopic monitoring, the substrates and the borane agent bind to the iron centre and the imine N atom, respectively, which facilitates the hydride transfer by activating the B-H bond and polarizing the double bond of the substrates.
Collapse
Affiliation(s)
- Jiabin Luo
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China. .,College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China.
| | - Chuanguo Cui
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China. .,College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China.
| | - Zhiyin Xiao
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China.
| | - Wei Zhong
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China.
| | - Chunxin Lu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China.
| | - Xiujuan Jiang
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China.
| | - Xueming Li
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China.
| | - Xiaoming Liu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China.
| |
Collapse
|
3
|
Guo J, Guo Z, Xiao Z, Jin J, Yang X, He Y, Liu X. Further exploration of the reaction between
cis
‐[Fe(CO)
4
I
2
] and alkylamines: An aminium salt of
fac
‐[Fe(CO)
3
I
3
]
−
or an amine‐bound complex of
fac
‐[Fe(CO)
3
I
2
(NH
2
R)]? Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jinzhong Guo
- College of Chemistry and Life Sciences Zhejiang Normal University Jinhua China
| | - Zhuming Guo
- College of Chemistry and Bioengineering Guilin University of Technology Guilin China
| | - Zhiyin Xiao
- College of Biological, Chemical Sciences and Engineering Jiaxing University Jiaxing China
| | - Jing Jin
- Department of Urology The Affiliated Hospital of Jiaxing University Jiaxing China
| | - Xiuqin Yang
- College of Chemistry and Life Sciences Zhejiang Normal University Jinhua China
| | - Yi He
- Department of Urology The Affiliated Hospital of Jiaxing University Jiaxing China
| | - Xiaoming Liu
- College of Chemistry and Life Sciences Zhejiang Normal University Jinhua China
- College of Biological, Chemical Sciences and Engineering Jiaxing University Jiaxing China
| |
Collapse
|
4
|
Zhong W, Wu L, Jiang W, Li Y, Mookan N, Liu X. Proton-coupled electron transfer in the reduction of diiron hexacarbonyl complexes and its enhancement on the electrocatalytic reduction of protons by a pendant basic group. Dalton Trans 2019; 48:13711-13718. [DOI: 10.1039/c9dt02058f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The pendant basic groups in a diiron complex acted as proton relay to ease the kinetic resistance in proton reduction and enhance proton-coupled electron transfer (PCET).
Collapse
Affiliation(s)
- Wei Zhong
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Li Wu
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Weidong Jiang
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan
- Sichuan University of Science & Engineering
- Zigong
- China
| | - Yulong Li
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan
- Sichuan University of Science & Engineering
- Zigong
- China
| | - Natarajan Mookan
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Xiaoming Liu
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| |
Collapse
|
5
|
Synthesis, characterisation and protonation of phosphate disubstituted derivatives with pyridyl-functionalized diiron. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.11.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
6
|
Reaction of three cyclic thioester ligands with triiron dodecacarbonyl and possible reaction mechanisms. J CHEM SCI 2017. [DOI: 10.1007/s12039-017-1372-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
7
|
Zou LK, Deng CL, Li Y, He J, Wei J, Wu Y, Xie B, Zhao PH, Li YL. Investigations on the Synthesis, Structural Characterization, and Crystal Structures of Three Diiron and Tetrairon Azadithiolate Complexes. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Li-Ke Zou
- College of Chemistry and Environmental Engineering; Sichuan University of Science & Engineering; 643000 Zigong P. R. China
| | - Cheng-Long Deng
- College of Chemistry and Environmental Engineering; Sichuan University of Science & Engineering; 643000 Zigong P. R. China
| | - Yao Li
- College of Chemistry and Environmental Engineering; Sichuan University of Science & Engineering; 643000 Zigong P. R. China
| | - Jiao He
- College of Chemistry and Environmental Engineering; Sichuan University of Science & Engineering; 643000 Zigong P. R. China
| | - Jian Wei
- College of Chemistry and Environmental Engineering; Sichuan University of Science & Engineering; 643000 Zigong P. R. China
| | - Yu Wu
- College of Chemistry and Environmental Engineering; Sichuan University of Science & Engineering; 643000 Zigong P. R. China
| | - Bin Xie
- Institute of Functional Materials; Sichuan University of Science & Engineering; 643000 Zigong P. R. China
| | - Pei-Hua Zhao
- School of Materials Science and Engineering; North University of China; 030051 Taiyuan P. R. China
| | - Yu-Long Li
- College of Chemistry and Environmental Engineering; Sichuan University of Science & Engineering; 643000 Zigong P. R. China
- Institute of Functional Materials; Sichuan University of Science & Engineering; 643000 Zigong P. R. China
| |
Collapse
|
8
|
Li Z, Xiao Z, Xu F, Zeng X, Liu X. Enhancement in catalytic proton reduction by an internal base in a diiron pentacarbonyl complex: its synthesis, characterisation, inter-conversion and electrochemical investigation. Dalton Trans 2017; 46:1864-1871. [DOI: 10.1039/c6dt04409c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An internal base bound to one of the diiron undergoes dissociation under a CO atmosphere and the freed base group as a proton relay enhances the catalysis of proton reduction.
Collapse
Affiliation(s)
- Zhimei Li
- School of Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Zhiyin Xiao
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Fenfen Xu
- School of Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Xianghua Zeng
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Xiaoming Liu
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| |
Collapse
|
9
|
Abstract
Virtually all organosulfur compounds react with Fe(0) carbonyls to give the title complexes. These reactions are reviewed in light of major advances over the past few decades, spurred by interest in Fe2(μ-SR)2(CO)x centers at the active sites of the [FeFe]-hydrogenase enzymes. The most useful synthetic route to Fe2(μ-SR)2(CO)6 involves the reaction of thiols with Fe2(CO)9 and Fe3(CO)12. Such reactions can proceed via mono-, di-, and triiron intermediates. The reactivity of Fe(0) carbonyls toward thiols is highly chemoselective, and the resulting dithiolato complexes are fairly rugged. Thus, many complexes tolerate further synthetic elaboration directed at the organic substituents. A second major route involves alkylation of Fe2(μ-S2)(CO)6, Fe2(μ-SH)2(CO)6, and Li2Fe2(μ-S)2(CO)6. This approach is especially useful for azadithiolates Fe2[(μ-SCH2)2NR](CO)6. Elaborate complexes arise via addition of the FeSH group to electrophilic alkenes, alkynes, and carbonyls. Although the first example of Fe2(μ-SR)2(CO)6 was prepared from ferrous reagents, ferrous compounds are infrequently used, although the Fe(II)(SR)2 + Fe(0) condensation reaction is promising. Almost invariably low-yielding, the reaction of Fe3(CO)12, S8, and a variety of unsaturated substrates results in C-H activation, affording otherwise inaccessible derivatives. Thiones and related C═S-containing reagents are highly reactive toward Fe(0), often giving complexes derived from substituted methanedithiolates and C-H activation.
Collapse
Affiliation(s)
- Yulong Li
- School of Chemistry and Pharmaceutical Engineering, Sichuan University of Science & Engineering, Zigong 643000, China
- School of Chemical Sciences, University of Illinois at Urbana–Champaign, Urbana, Illinois 61801, United States
| | - Thomas B. Rauchfuss
- School of Chemical Sciences, University of Illinois at Urbana–Champaign, Urbana, Illinois 61801, United States
| |
Collapse
|
10
|
Abstract
Transition metal hydride complexes are usually amphoteric, not only acting as hydride donors, but also as Brønsted-Lowry acids. A simple additive ligand acidity constant equation (LAC for short) allows the estimation of the acid dissociation constant Ka(LAC) of diamagnetic transition metal hydride and dihydrogen complexes. It is remarkably successful in systematizing diverse reports of over 450 reactions of acids with metal complexes and bases with metal hydrides and dihydrogen complexes, including catalytic cycles where these reactions are proposed or observed. There are links between pKa(LAC) and pKa(THF), pKa(DCM), pKa(MeCN) for neutral and cationic acids. For the groups from chromium to nickel, tables are provided that order the acidity of metal hydride and dihydrogen complexes from most acidic (pKa(LAC) -18) to least acidic (pKa(LAC) 50). Figures are constructed showing metal acids above the solvent pKa scales and organic acids below to summarize a large amount of information. Acid-base features are analyzed for catalysts from chromium to gold for ionic hydrogenations, bifunctional catalysts for hydrogen oxidation and evolution electrocatalysis, H/D exchange, olefin hydrogenation and isomerization, hydrogenation of ketones, aldehydes, imines, and carbon dioxide, hydrogenases and their model complexes, and palladium catalysts with hydride intermediates.
Collapse
Affiliation(s)
- Robert H Morris
- Department of Chemistry, University of Toronto , 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
| |
Collapse
|
11
|
Pandey IK, Natarajan M, Kaur-Ghumaan S. Hydrogen generation: aromatic dithiolate-bridged metal carbonyl complexes as hydrogenase catalytic site models. J Inorg Biochem 2014; 143:88-110. [PMID: 25528677 DOI: 10.1016/j.jinorgbio.2014.11.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 11/26/2014] [Accepted: 11/26/2014] [Indexed: 10/24/2022]
Abstract
The design, syntheses and characteristics of metal carbonyl complexes with aromatic dithiolate linkers reported as bioinspired hydrogenase catalytic site models are described and reviewed. Among these the complexes capable of hydrogen generation have been discussed in detail. Comparisons have been made with carbonyl complexes having alkyl dithiolates as linkers between metal centers.
Collapse
Affiliation(s)
| | - Mookan Natarajan
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | | |
Collapse
|
12
|
Wen N, Xu FF, Chen RP, Du SW. Reversible carbonylation of [2Fe2S] model complexes with pendant quinoline or pyridine arms. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.01.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
13
|
Wang H, Liu X. Intramolecular hydrogen bonding interaction, a mechanism for the bridging linkages to exert electronic influence on diiron models of [FeFe]-hydrogenase. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.07.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
14
|
Long L, Xiao Z, Zampella G, Wei Z, De Gioia L, Liu X. The reactions of pyridinyl thioesters with triiron dodecacarbonyl: their novel diiron carbonyl complexes and mechanistic investigations. Dalton Trans 2012; 41:9482-92. [PMID: 22751866 DOI: 10.1039/c2dt30798g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction of Fe(3)(CO)(12) with pyridinyl thioester ligand PyCH(2)SCOCH(3) (L(1), Py = pyridin-2-yl) produced complex, [Fe(2)(κ-COCH(3))(μ-SCH(2)Py)(CO)(5)] (1) (PyCH(2)S = pyridin-2-ylmethanethiolate). When complex 1 reacted with PPh(3), a monosubstituted complex, [Fe(2)(κ-COCH(3))(μ-SCH(2)Py)(CO)(4)PPh(3)] (2), was derived. Reaction of the same precursor with analogous thioester ligand PyCH(2)SCOPy (L(2)) generated three novel diiron complexes, [Fe(2)(κ-Py)(μ-SCH(2)Py)(CO)(5)] (3), [Fe(2)(κ-Py)'(μ-SCH(2)Py)(CO)(5)] (4), and [Fe(2)(κ-Py)(μ-SCH(2)Py)(CO)(6)] (5). Complexes 3 and 4 are structural isomers. Complex 5 could be converted into complex 4 but the conversion from complex 5 to the isomer 3 was not observed. All the five complexes were fully characterised using FTIR, NMR, and other techniques. Their structures were determined using X-ray single crystal diffraction analysis. The oxidative formation of complexes 1, 3, 4, and 5 involved C-S and/or C-C bonds cleavages. To probe possible mechanisms for these cleavages, DFT calculations were performed. From the calculations, viable reaction pathways leading to the formation of all the isolated products were delineated. The results of the theoretic calculations also allowed rationalisation of the experimental observations.
Collapse
Affiliation(s)
- Li Long
- Department of Chemistry, Nanchang University, Nanchang 330031, China
| | | | | | | | | | | |
Collapse
|
15
|
Lounissi S, Zampella G, Capon JF, De Gioia L, Matoussi F, Mahfoudhi S, Pétillon FY, Schollhammer P, Talarmin J. Electrochemical and Theoretical Investigations of the Role of the Appended Base on the Reduction of Protons by [Fe2(CO)4(κ2-PNPR)(μ-S(CH2)3S] (PNPR={Ph2PCH2}2NR, R=Me, Ph). Chemistry 2012; 18:11123-38. [DOI: 10.1002/chem.201201087] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Indexed: 11/12/2022]
|
16
|
Gao W, Song LC, Yin BS, Zan HN, Wang DF, Song HB. Synthesis and Characterization of Single, Double, and Triple Butterfly [2Fe2E] (E = Se, S) Cluster Complexes Related to the Active Site of [FeFe]-Hydrogenases. Organometallics 2011. [DOI: 10.1021/om200395g] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wei Gao
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Li-Cheng Song
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Bang-Shao Yin
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Hui-Ning Zan
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - De-Fu Wang
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Hai-Bin Song
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| |
Collapse
|
17
|
Liu XF, Xiao XW, Shen LJ. Synthesis, characterization, and crystal structures of N-functionalized diiron azadithiolate complexes related to the active site of [FeFe]-hydrogenases. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.561838] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Xu-Feng Liu
- a Department of Chemical Engineering , Ningbo University of Technology , Ningbo 315016, P.R. China
| | - Xun-Wen Xiao
- a Department of Chemical Engineering , Ningbo University of Technology , Ningbo 315016, P.R. China
| | - Liang-Jun Shen
- a Department of Chemical Engineering , Ningbo University of Technology , Ningbo 315016, P.R. China
| |
Collapse
|
18
|
Xiao Z, Wei Z, Long L, Wang Y, Evans DJ, Liu X. Diiron carbonyl complexes possessing a {Fe(ii)Fe(ii)} core: synthesis, characterisation, and electrochemical investigation. Dalton Trans 2011; 40:4291-9. [DOI: 10.1039/c0dt01465f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
19
|
Zhan C, Wang X, Wei Z, Evans DJ, Ru X, Zeng X, Liu X. Synthesis and characterisation of polymeric materials consisting of {Fe2(CO)5}-unit and their relevance to the diiron sub-unit of [FeFe]-hydrogenase. Dalton Trans 2010; 39:11255-62. [DOI: 10.1039/c0dt00687d] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|