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Ang PL, Nguyen VH, Yip JHK. Hetero- and homoleptic binuclear gold(I)-thiolate and -halide complexes - ligand exchange kinetics and supramolecular structures. Dalton Trans 2022; 51:3081-3095. [PMID: 35113094 DOI: 10.1039/d1dt04245a] [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
Heteroleptic and homoleptic binuclear Au(I) complexes [Au2(μ-PAnP)(SPh)(X)] (X = Cl- or Br-), [Au2(μ-PAnP)(SPh)2] and [Au2(μ-PAnP)(SPhCO2H)2] (SPh = benzenethiolate and SPhCO2H = 4-thiolatobenzoic acid) containing the bridging diphosphine, 9,10-bis(diphenylphosphino)anthracene (PAnP), were synthesized and characterized by single crystal X-ray diffraction. [Au2(μ-PAnP)(SPh)2] exists as a monomer in its crystals but [Au2(μ-PAnP)(SPhCO2H)2] polymerizes into zig-zag chains via intermolecular hydrogen bonding. [Au2(μ-PAnP)(SPh)(Cl)] forms cyclophane-like dimers of Ci symmetry in crystals via intermolecular aurophilic interactions (Au-Au distance = 3.3081(5) Å). Recrystallization of [Au2(μ-PAnP)(SPh)(Br)] invariably led to crystals composed of [Au2(μ-PAnP)(SPh)(Br)] and [Au2(μ-PAnP)(Br)2]. Despite the chemically different P atoms in the heteroleptic [Au2(μ-PAnP)(SPh)(Cl)] and [Au2(μ-PAnP)(SPh)(Br)], solutions of the complexes show only a single signal in their 31P{1H} NMR spectra at room temperature which resolved into two singlets of equal intensity at 183 K. Identical signals which show the same thermal behavior were observed in solutions of [Au2(μ-PAnP)(SPh)2] and [Au2(μ-PAnP)(X)2] in 1 : 1 molar ratios, indicating that there are three exchanging species, [Au2(μ-PAnP)(SPh)(X)], [Au2(μ-PAnP)(SPh)2] and [Au2(μ-PAnP)(X)2], in solution. A solution of [Au2(μ-PAnP)(Cl)2] and [Au2(μ-PAnP)(Br)2] in 1 : 1 molar ratio shows two singlets, implying that the exchange is not due to the dissociation of either PAnP or halide ligands, but rather it involves the exchange of the thiolate and the halide ligands (SPh- ↔ X-). A mixture of [(PPh3)Au(SPh)] and [(PPh3)Au(Cl)] (1 : 1 molar ratio) showed only one signal in its room temperature 31P{1H} NMR spectrum, indicating that the ligand exchange can happen intermolecularly. Self-exchange of SPh- ligands is possible as the room temperature 31P NMR spectrum of a mixture of [Au2(μ-PAnP)(SPh)2] and [Au2(μ-PAnP)(SPhCO2H)2] displayed only one signal. The rate constants of the exchange were determined by fitting the line shapes of the 31P NMR signals at different temperatures. The activation energies (Eas), obtained from Arrhenius plots, for the SPh- ↔ Cl- and SPh- ↔ Br- exchange are 36.9 ± 0.7 and 33.7 ± 1.0 kJ mol-1, respectively. The activation enthalpy and activation entropy, obtained from Eyring plots, for the SPh- ↔ Cl- and SPh- ↔ Br- exchange are 35.0 ± 0.7 kJ mol-1 and -25.7 ± 3.2 J K-1, and 32.0 ± 1.0 kJ mol-1 and -21.8 ± 4.7 J K-1, respectively. Based on the kinetic results, two possible mechanisms were proposed for the reactions.
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Affiliation(s)
- Pau Lin Ang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore.
| | - Van Ha Nguyen
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore.
| | - John H K Yip
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore.
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Mohamad ADM, Abualreish M, Abu-Dief AM. Temperature and salt effects of the kinetic reactions of substituted 2-pyridylmethylene-8-quinolyl iron (II) complexes as antimicrobial, anti-cancer, and antioxidant agents with cyanide ions. CAN J CHEM 2021. [DOI: 10.1139/cjc-2020-0412] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Kinetics of substitution reaction of three high-spin pyridylmethylene-8-quinolyl iron (II) complexes by CN– ions were studied spectrophotometrically in various ratios of aqueous–methanol binary mixtures at 298 ± 0.2 K. Kinetics of the substitution reaction follow the rate law (k2[CN−][complex]) on applying of the conditions of the pseudo first order reaction. Reactivity of the reaction was investigated in terms of ligand moiety and solvent effects. The rate of the reaction increased as the co-solvent methanol ratio increased. This reactivity trend is predominantly due to increases in the activity coefficient of those hydrophobic complexes in the organic methanol co-solvent, depending upon the hydrophobicity of the substituent groups (R) in the coordinated ligand in the complexes. Reactivity trends of the prepared complexes in the presence of the inserted hydrophobic salts such as tetrabutylammonium bromide (TBAB), tetraethylammonium bromide (TEAB), and tetramethylammonium bromide (TMAB) or hydrophilic salt potassium bromide (KBr) were studied. The observed decrease in the rate constants with increasing salt concentration was due to the cationic character of the reacting complexes. In addition, the synthesized compounds were tested for antimicrobial activity against selected strains of microbes. The results showed that the order of reactivity of the investigated complexes against the selected microbes were as follows: ppaqFe > paaqFe > pmaqFe. In addition, the investigated ligands and their Fe(II) complexes were screened for anticancer activities against several cell lines of cancer. The ppaqFe complex showed the best cytotoxic efficiency against the selected cancer lines (IC50 = 8.75–21.50 µg/µl), whereas the pmaq ligand showed the lowest cytotoxic efficiency (IC50 = 58.25– 72.40). Furthermore, the antioxidant potential of the presented compounds was studied by applying DPPH assays and showed a potential activity compared with standard vitamin C. The excellent antimicrobial and anticancer activities of the investigated Fe(II) chelates compared with literature values are promising and deserve further study.
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Affiliation(s)
- Ahmad Desoky M. Mohamad
- Chemistry Department, Faculty of Science, Northern Border University, Arar, Saudi Arabia
- Chemistry Department, Faculty of Science, Sohag University, Sohag 82524, Egypt
| | - M.J.A Abualreish
- Chemistry Department, Faculty of Science, Northern Border University, Arar, Saudi Arabia
- Department of Chemistry, Faculty of Science and Technology, Omdurman Islamic University
| | - Ahmed M. Abu-Dief
- Chemistry Department, Faculty of Science, Sohag University, Sohag 82524, Egypt
- Chemistry Department, Faculty of Science, Taibah University, Madinah P.O. Box 344, Saudi Arabia
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3
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Goetzfried SK, Koenig SMC, Gallati CM, Gust R. Internal and External Influences on Stability and Ligand Exchange Reactions in Bromido[3-ethyl-4-aryl-5-(2-methoxypyridin-5-yl)-1-propyl-1,3-dihydro-2 H-imidazol-2-ylidene]gold(I) Complexes. Inorg Chem 2021; 60:8546-8553. [PMID: 34097405 PMCID: PMC8277168 DOI: 10.1021/acs.inorgchem.1c00325] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The ligand scrambling
reaction of gold(I) complexes is a phenomenon
occurring primarily in L–AuI–X (L = phosphine, N-heterocyclic carbene (NHC), and thiol; X = halide and
thiol) complexes and has been observed among others for e.g., the
bromido[3-ethyl-4-(4-methoxyphenyl)-5-(2-methoxypyridin-5-yl)-1-propyl-1,3-dihydro-2H-imidazol-2-ylidene]gold(I) complex (7a),
which underwent ligand rearrangement in aqueous solutions. In this
study, we investigated the influence of substituents on the 4-aryl
ring of the related (NHC)AuIBr complexes (1a–9a) in terms of the conversion to the [(NHC)2AuI]+ (1b–9b) and [(NHC)2AuIIIBr2]+ (1c–9c) species. Furthermore,
the influence of external factors such as solvent, temperature, concentration,
and presence of halides (Cl–, Br–, and I–) or hydroxyl ions was studied to gain
a deeper understanding of the ligand rearrangement reaction. The substituent
on the 4-aryl ring has a marginal impact on the scrambling reaction.
Out of the investigated organic solvents (dimethylformamide (DMF),
dimethyl sulfoxide (DMSO), ethanol (EtOH), methanol (MeOH), and acetonitrile
(ACN)), only ACN separates single complex molecules. In all other
solvents, relatively stable ((NHC)AuIBr)2 dimers
are present. The addition of water to ACN solutions forces the formation
of such dimeric units, starting the transformation to [(NHC)2AuI]+ and [(NHC)2AuIIIBr2]+. The rate-determining step is the release
of Br– from a T-shape intermediate because an excess
of KBr terminates this reaction. Furthermore, it is obvious that only
single molecules react with halides. The aurophilic interactions between
two (NHC)AuIBr molecules are too strong in the presence
of water and largely impeded reaction with halides. As a single molecule,
the reaction with Cl– (e.g., in a 0.9% NaCl solution)
is notable, while I– even leads to a fast and quantitative
conversion to (NHC)AuII and finally to [(NHC)2AuI]+. Internal
and external factors of the ligand scrambling reaction
in (NHC)AuIBr complexes were investigated by the means
of HPLC. The data represent the impact of substituents, temperature,
solvent, concentration and addition of halides on the conversion to
the respective [(NHC)2AuI]+ and the
oxidation to the [(NHC)2AuIIIBr2]+ complexes.
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Affiliation(s)
- Sina Katharina Goetzfried
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80/82, Innsbruck A-6020, Austria
| | - Sophie Marie Charlotte Koenig
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80/82, Innsbruck A-6020, Austria
| | - Caroline Marie Gallati
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80/82, Innsbruck A-6020, Austria
| | - Ronald Gust
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80/82, Innsbruck A-6020, Austria
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In-vitro and in-vivo monitoring of gold(III) ions from intermediate metabolite of sodium aurothiomalate through water-soluble ruthenium (II) complex-based luminescent probe. Bioorg Chem 2021; 110:104749. [PMID: 33652341 DOI: 10.1016/j.bioorg.2021.104749] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 02/09/2021] [Accepted: 02/13/2021] [Indexed: 02/04/2023]
Abstract
Real-time monitoring of drug metabolism in vivo is of great significance to drug development and toxicology research. The purpose of this study is to establish a rapid and visual in vivo detection method for the detection of an intermediate metabolite of the gold (I) drug. Gold (I) drugs such as sodium aurothiomalate (AuTM) have anti-inflammatory effects in the treatment of rheumatoid arthritis. Gold(III) ions (Au3+) are the intermediate metabolite of gold medicine, and they are also the leading factor of side effects in the treatment of patients. However, the rapid reduction of Au3+ to Au+ by thiol proteins in organisms limits the in-depth study of metabolism of gold drugs in vivo. Here we describe a luminescence Au3+ probe (RA) based on ruthenium (II) complex for detecting Au3+ in vitro and in vivo. RA with large Stokes shift, good water solubility and biocompatibility was successfully applied to detect Au3+ in living cells and vivo by luminescence imaging, and to trap the fluctuation of Au3+ level produced by gold (I) medicine. More importantly, the luminescent probe was used to the detection of the intermediate metabolites of gold (I) drugs for the first time. Overall, this work offers a new detection tool/method for a deeper study of gold (I) drugs metabolite.
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5
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Mageed AH, Al-Ameed K. Synthesis, structures, and DFT analysis of gold complexes containing a thiosemicarbazone ligand. NEW J CHEM 2021. [DOI: 10.1039/d1nj03647e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mixture of E,Z-thiosemicarbazone (TSC) allows the formation of two Au(i) complexes; the reaction of TSC with KAuCl4 yields two complexes in different solvents.
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Affiliation(s)
- Ahmed Hassoon Mageed
- Department of Chemistry, Faculty of Science, The University of Kufa, P.O. Box 21, Najaf 54001, Iraq
| | - Karrar Al-Ameed
- Department of Chemistry, Faculty of Science, The University of Kufa, P.O. Box 21, Najaf 54001, Iraq
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Sulaiman AA, Alhoshani A, As Sobeai HM, Alghanem M, Abogosh AK, Ahmad S, Altaf M, Monim-ul-Mehboob M, Stoeckli-Evans H, Isab AA. Anticancer activity and X-ray structure determination of gold(I) complexes of 2-(diphenylphosphanyl)-1-aminocyclohexane. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114532] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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7
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Ahmad S, Georgieva I, Hanif M, Monim-Ul-Mehboob M, Munir S, Sohail A, Isab AA. Periodic DFT modeling and vibrational analysis of silver(I) cyanide complexes of thioureas. J Mol Model 2019; 25:90. [PMID: 30847580 DOI: 10.1007/s00894-019-3970-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 02/13/2019] [Indexed: 11/30/2022]
Abstract
The structures of non-ionic [Ag(Tu)(CN)] (1) and ionic [Ag(Dmtu)2]+[Ag(CN)2]- (2) and [Ag(Imt)2]+[Ag(CN)2]- (3) silver(I) complexes, where Tu = thiourea, Dmtu = N,N'-dimethylthiourea and Imt = imidazoline-2-thione), were modeled by periodic DFT/PAW-PBE calculations; results were in good agreement with experiments. The bonding ability of the thiourea ligands (Tu, Dmtu and Imt) and the rival Ag-C, Ag-S, Ag-N and Ag-Ag bonds were estimated by natural population analysis and natural bonding orbital calculations. The metal-ligand bond strengths were found to decrease in the following order Ag-CCN > Ag-Sthiourea > Ag-NCN, and the main bonding contribution was covalent, donor-acceptor and electrostatic, respectively. The non-ionic [Ag(Tu)(CN)] complex formation [distinguished from the ionic Ag(I) complexes] was explained with the largest bonding capacity of the sulfur donor atom of Tu ligand and the strongest covalent and donor-acceptor Ag-S(Tu) interaction. The infrared (IR) spectra of the experimentally observed structures were reliably interpreted and the IR vibrations, which were sensitive to the ligand coordination to Ag(I) ion and to the weak intra- and intermolecular interactions, were selected with the help of DFT frequency calculations in the solid state. Graphical abstract Non-ionic and ionic complex formation and the different coordination polyhedra around Ag(I) in three AgCN complexes of thioureas were evaluated by natural population analysis, natural bonding orbital, charge density and electron localization function calculations. The predicted largest capacity of sulfur (Tu) for donor-acceptor interaction, the largest bridging sulfur ability for three Ag ions and the strongest covalent and donor-acceptor Ag-S(Tu)3 interactions in 1 as compared to 2 and 3 explain the formation of a non-ionic complex, i.e., the Ag(CN)2- anion is missing in 1.
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Affiliation(s)
- Saeed Ahmad
- Department of Chemistry, College of Sciences and Humanities, Prince Sattam bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia.
| | - Ivelina Georgieva
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 11 Acad. G. Bonchev Str., 1113, Sofia, Bulgaria.
| | - Muhammad Hanif
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | | | - Shaukat Munir
- Department of Chemistry, University of Engineering and Technology, Lahore, Pakistan
| | - Ahsan Sohail
- Department of Chemistry, University of Engineering and Technology, Lahore, Pakistan
| | - Anvarhusein A Isab
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
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8
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Synthesis, characterization and anticancer evaluation of phosphinogold(I) thiocarbohydrate complexes. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.09.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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9
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Ahmad S, Fettouhi M, Roisnel T, Alotaibi MA, Alharthi AI, Malik MR, Ahmad I, Isab AA. Structural diversity in pseudohalide complexes of cadmium(II) with N-methylthiourea (Metu): Polymeric [Cd(Metu)2(NCS)2]n versus monomeric [Cd(Metu)2(CN)2]. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1398824] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Saeed Ahmad
- Department of Chemistry, College of Sciences and Humanities, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Mohammed Fettouhi
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
| | - Thierry Roisnel
- Centre de Diffractométrie X (CDIFX), Institut des Sciences Chimiques de Rennes UMR6226 CNRS – Université de Rennes 1, Rennes Cedex, France
| | - Mshari A. Alotaibi
- Department of Chemistry, College of Sciences and Humanities, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Abdulrahman I. Alharthi
- Department of Chemistry, College of Sciences and Humanities, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | | | - Irshad Ahmad
- Department of Chemistry, Government Gordon College, Rawalpindi, Pakistan
| | - Anvarhusein A. Isab
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
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10
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de Paiva REF, Du Z, Peterson EJ, Corbi PP, Farrell NP. Probing the HIV-1 NCp7 Nucleocapsid Protein with Site-Specific Gold(I)–Phosphine Complexes. Inorg Chem 2017; 56:12308-12318. [DOI: 10.1021/acs.inorgchem.7b01762] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Raphael E. F. de Paiva
- Institute of Chemistry, University of Campinas − UNICAMP, P.O. Box 6154, 13083-970 Campinas-SP, Brazil
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284-2006, United States
| | - Zhifeng Du
- Institute of Chemistry, University of Campinas − UNICAMP, P.O. Box 6154, 13083-970 Campinas-SP, Brazil
| | - Erica J. Peterson
- Institute of Chemistry, University of Campinas − UNICAMP, P.O. Box 6154, 13083-970 Campinas-SP, Brazil
| | - Pedro P. Corbi
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284-2006, United States
| | - Nicholas P. Farrell
- Institute of Chemistry, University of Campinas − UNICAMP, P.O. Box 6154, 13083-970 Campinas-SP, Brazil
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11
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Synthesis, characterization, DFT calculations and antibacterial activity of palladium(II) cyanide complexes with thioamides. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.03.098] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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12
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Faraz MM, Isab AA, Alotaibi MA, Alharthi AI, Tahir MN, Monim-ul-Mehboob M, Ahmad S. Zinc(II) complexes of 4-aminoantipyrine (AAP). Crystal structure of [Zn(AAP)2Cl2]. RUSS J INORG CHEM+ 2017. [DOI: 10.1134/s0036023617070075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Abbehausen C, Manzano C, Corbi P, Farrell N. Effects of coordination mode of 2-mercaptothiazoline on reactivity of Au(I) compounds with thiols and sulfur-containing proteins. J Inorg Biochem 2016; 165:136-145. [DOI: 10.1016/j.jinorgbio.2016.05.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 04/13/2016] [Accepted: 05/13/2016] [Indexed: 01/01/2023]
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14
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Shu T, Wang J, Su L, Zhang X. Chemical Etching of Bovine Serum Albumin-Protected Au25 Nanoclusters for Label-Free and Separation-Free Ratiometric Fluorescent Detection of Tris(2-carboxyethyl)phosphine. Anal Chem 2016; 88:11193-11198. [DOI: 10.1021/acs.analchem.6b03418] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Tong Shu
- Research
Center for Bioengineering
and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jianxing Wang
- Research
Center for Bioengineering
and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Lei Su
- Research
Center for Bioengineering
and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xueji Zhang
- Research
Center for Bioengineering
and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
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Britvin SN, Lotnyk A. Water-Soluble Phosphine Capable of Dissolving Elemental Gold: The Missing Link between 1,3,5-Triaza-7-phosphaadamantane (PTA) and Verkade's Ephemeral Ligand. J Am Chem Soc 2015; 137:5526-35. [PMID: 25897572 DOI: 10.1021/jacs.5b01851] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We herein describe a tricyclic phosphine with previously unreported tris(homoadamantane) cage architecture. That water-soluble, air- and thermally stable ligand, 1,4,7-triaza-9-phosphatricyclo[5.3.2.1(4,9)]tridecane (hereinafter referred to as CAP) exhibits unusual chemical behavior toward gold and gold compounds: it readily reduces Au(III) to Au(0), promotes oxidative dissolution of nanocrystalline gold(0) with the formation of water-soluble trigonal CAP-Au(I) complexes, and displaces cyanide from [Au(CN)2](-) affording triangular [Au(CAP)3](+) cation. From the stereochemical point of view, CAP can be regarded as an intermediate between 1,3,5-triaza-7-phosphaadamantane (PTA) and very unstable aminophosphine synthesized by Verkade's group: hexahydro-2a,4a,6a-triaza-6b-phosphacyclopenta[cd]pentalene. The chemical properties of CAP are likely related to its anomalous stereoelectronic profile: combination of strong electron-donating power (Tolman's electronic parameter 2056.8 cm(-1)) with the low steric demand (cone angle of 109°). CAP can be considered as macrocyclic counterpart of PTA with the electron-donating power approaching that of strongest known phosphine electron donors such as P(t-Bu)3 and PCy3. Therefore, CAP as sterically undemanding and electron-rich ligand populates the empty field on the stereoelectronic map of phosphine ligands: the niche between the classic tertiary phosphines and the sterically undemanding aminophosphines.
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Affiliation(s)
- Sergey N Britvin
- †Department of Crystallography, Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russia.,‡Nanomaterials Research Center, Kola Science Center, Russian Academy of Sciences, 184200 Apatity, Murmansk Region, Russia
| | - Andriy Lotnyk
- §Leibniz Institute of Surface Modification, Permoserstrassse 15, D-04318 Leipzig, Germany
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Adokoh CK, Obuah C, Kinfe HH, Zinyemba O, Darkwa J. Novel bio-friendly and non-toxic thiocarbohydrate stabilizers of gold nanoparticles. NEW J CHEM 2015. [DOI: 10.1039/c5nj00293a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A new class of stabilizers for gold nanoparticles has been develop with non-toxic thiocarbohydrates that were prepared from d-(+)-gluconic acid δ-lactone and aminoalkylthiols.
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Affiliation(s)
| | - Collins Obuah
- Department of Chemistry
- University of Johannesburg
- South Africa
| | - Henok H. Kinfe
- Department of Chemistry
- University of Johannesburg
- South Africa
| | - Orpah Zinyemba
- Department of Chemistry
- University of Johannesburg
- South Africa
| | - James Darkwa
- Department of Chemistry
- University of Johannesburg
- South Africa
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17
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Theoretical study on the bifunctional substitution reactions between gold(III) dithiocarbamate derivative Au(DMDT)Cl2 (DMDT=N,N-dimethyldithiocarbamate) and target molecules. COMPUT THEOR CHEM 2014. [DOI: 10.1016/j.comptc.2014.08.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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18
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González-Gallardo S, Kuzu I, Oña-Burgos P, Wolfer T, Wang C, Klinkhammer KW, Klopper W, Bräse S, Breher F. Coinage Metal Complexes of Tris(pyrazolyl)methanide-Based Redox-Active Metalloligands. Organometallics 2014. [DOI: 10.1021/om4010498] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sandra González-Gallardo
- Institute
of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany
| | - Istemi Kuzu
- Institute
of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany
| | - Pascual Oña-Burgos
- Institute
of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany
| | - Tanja Wolfer
- Institute
of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany
| | - Cong Wang
- Institute
of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
| | - Karl W. Klinkhammer
- Institute
of Inorganic Chemistry and Analytical Chemistry, J. Gutenberg University, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Wim Klopper
- Institute
of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
| | - Stefan Bräse
- Institute
of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
| | - Frank Breher
- Institute
of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany
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Malik MR, Rüffer T, Lang H, Isab AA, Ali S, Ahmad S, Stoeckli-Evans H. Structural characterization of dicyanidobis-(N,N′-dimethylthiourea-κS)cadmium(II). J STRUCT CHEM+ 2013. [DOI: 10.1134/s0022476613040240] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ahmad S, Sadaf H, Altaf M, Stoeckli-Evans H, Seerat-ur-Rehman, Bashir SA. Crystal structures of bis(cyanido)bis(N,N′-diethylthiourea-κS) mercury(II) and bis(cyanido)bis(N,N′-dipropylthiourea-κS) mercury(II). CRYSTALLOGR REP+ 2013. [DOI: 10.1134/s1063774513050155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Sadaf H, Ahmad S, Sharif S, Khan IU, Akkurt M, Ng SW, Khan MI, Bashir SA, Mufakkar M. Crystal structures of [Hg(N-ethylthiourea)2(CN)2] and [Hg(N-propylthiourea)2(CN)2]. J STRUCT CHEM+ 2012. [DOI: 10.1134/s0022476612010209] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Sivaram H, Jothibasu R, Huynh HV. Gold Complexes of an Alicyclic Indazole-Derived N-Heterocyclic Carbene: Syntheses, Characterizations, and Ligand Disproportionation. Organometallics 2012. [DOI: 10.1021/om201268m] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Haresh Sivaram
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Republic
of Singapore
| | - Ramasamy Jothibasu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Republic
of Singapore
| | - Han Vinh Huynh
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Republic
of Singapore
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Isab AA, Fettouhi M, Malik MR, Ali S, Fazal A, Ahmad S. Mercury(II) cyanide complexes of thioureas and the crystal structure of [(N-methylthiourea)2 Hg(CN)2]. RUSS J COORD CHEM+ 2011. [DOI: 10.1134/s1070328411030055] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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1H, 13C NMR and UV spectroscopy studies of gold(III)-tetracyanide complex with l-cysteine, glutathione, captopril, l-methionine and dl-seleno-methionine in aqueous solution. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.06.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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HIV therapeutic possibilities of gold compounds. Biometals 2010; 23:185-96. [DOI: 10.1007/s10534-010-9293-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2009] [Accepted: 01/16/2010] [Indexed: 10/19/2022]
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26
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García-Pacios V, Arroyo M, Antón N, Miguel D, Villafañe F. Non-covalent interactions at bis(pyrazole)silver(i) or -gold(i) cations. Dalton Trans 2009:2135-41. [PMID: 19274292 DOI: 10.1039/b820084j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Lignier P, Mangematin S, Morfin F, Rousset JL, Caps V. Solvent and oxidant effects on the Au/TiO2-catalyzed aerobic epoxidation of stilbene. Catal Today 2008. [DOI: 10.1016/j.cattod.2008.04.026] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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28
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Gold(III)-Dithiocarbamato Complexes Induce Cancer Cell Death Triggered by Thioredoxin Redox System Inhibition and Activation of ERK Pathway. ACTA ACUST UNITED AC 2007; 14:1128-39. [DOI: 10.1016/j.chembiol.2007.08.016] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2007] [Revised: 07/26/2007] [Accepted: 08/10/2007] [Indexed: 11/18/2022]
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29
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Coetzee J, Gabrielli W, Coetzee K, Schuster O, Nogai S, Cronje S, Raubenheimer H. Structural Studies of Gold(I, II, and III) Compounds with Pentafluorophenyl and Tetrahydrothiophene Ligands. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200604592] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Coetzee J, Gabrielli WF, Coetzee K, Schuster O, Nogai SD, Cronje S, Raubenheimer HG. Structural Studies of Gold(I, II, and III) Compounds with Pentafluorophenyl and Tetrahydrothiophene Ligands. Angew Chem Int Ed Engl 2007; 46:2497-500. [PMID: 17328088 DOI: 10.1002/anie.200604592] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jacorien Coetzee
- Department of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland, Stellenbosch 7602, South Africa
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Intermolecular ligand exchange in alkyltin trihalides: Semiempirical and density functional theory calculations. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.theochem.2005.12.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Isab AA, Ahmad S, Ashraf W. 13C-n.m.r. studies of the binding of 1,3-diazinane-2-selenone and 1,3-diazipine-2-selenone to gold(I) drugs. TRANSIT METAL CHEM 2005. [DOI: 10.1007/s11243-004-6966-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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